bluuebunny/crossref_metadata_2025 huggingface dataset:
UG Simulation Design of Electromagnetic Dryer
Authors: Wang Zheng Shun , Zhen Zhao Hui
Published: April 2013

The electromagnetic technology of drying Paper is that we use the principle of electromagnetic heating to dry paper, which is a new paper drying technology and quite different from the traditional steam drying . This thesis is based on the principle of electromagnetic induction, combined with technical requirement of paper drying. We used the AutoCAD software design a laboratory drying device with electromagnetic, and analyzed various parts of the selection and structure, by using UG software solid modeling, assembly modeling and other modules design a three-dimensional simulation of the various parts of the electromagnetic dryer device. The simulation graphics shown that the simulation design of electromagnetic dryer is more success, which can meet the requirements of drying paper evenly.
Simulation about Panel Edge Light Leakage
Authors: Tang Rong , Lv Jin Ku , Zhang Qian , Zou Bin , Wang Dan , Shao Xi Bin
Published: April 2013

This document simulates the light leakage issue usually existed in liquid crystal display, and gains some experience conclusion. Simulation is mainly to the width of the black matrix (BM) located outside of the panel edge AA region, and ultimately determines the favorable range of value of the product, makes guidance to the product design.
Numerical Simulation Study on the Hydrodynamic Performance of Two Blades of Canoes
Authors: Zheng Wei Tao , Zhang Dong Yan , Ye Guo Xiong
Published: April 2013

In order to study the interaction of flow around two full-scaled blades of Canoes which are used in sports competition, the numerical simulation is performed for computation of fluid dynamics (CFD) using Fluent, commercial software. Based on the turbulent model having been validated previously, the research is conducted to the two blades that are arranged at 12 different combinations of positions, in which the force applied on blades is also analyzed, in which the force applied on blades is also analyzed.
Development of Canoe Equipments for Strength Training in Rowing Tank
Authors: Xiao Ge , Zheng Wei Tao
Published: April 2013

To overcome the limits in current strength training equipment for canoeing in rowing tanks, we design a new system which can make the hull rock back and forth or side to side. As a result the canoeist needs to adjust his/her center of gravity constantly to make effective strokes. Thus the system can simulate the real situation of this sport in waters. Meanwhile, through applying adjustable gravity load resistance source, the weakness of land strength training can be overcome and training in both strength and dexterity can be conducted simultaneously, so as to improve the intensity and efficiency of canoe strength training. Furthermore, a testing and assessment subsystem is developed. This system is simple and easy to use, allowing not only monitoring of exercise, but also monitoring and assesment of athletes’ intensity and efficiency of strength training.
Parallel Driving for the Design of Humanoid Robot
Authors: Tang Gang , Huang Jia Hui , Wei Gao Feng , Wu Gang , Wang Hai Shan
Published: April 2013

To explore the new method for the design of humanoid robot driving system. This driving system is to use the force-line model to parallel drive the limbs of the robot. A humanoid robot driving system with the force-line model has been constructed. New software for muscle force estimation has been developed. The solution of the parameters which are the input of the software has been statement. Finally, the input parameters have been obtained by experiment and calculation. The humanoid robot can be parallel driven to imitate human walking by the force which along the force-line. It will provide wide insight in developing new type humanoid robot for complex motion.
A Multipath Cancellation Method Based on TK Operator for BOC Signals
Authors: Deng Zhong Liang , Yang Lei , Yin Lu , Xi Yue
Published: April 2013

The new generation of global navigation satellite systems will apply binary offset carrier (BOC) modulation technique, which can efficiently split the spectrums of navigation signals using the same frequency so as to reduce the interferences among different systems. But the autocorrelation function of BOC modulated signals has the drawback of multimodality, so it’s very hard to synchronize to the right peak when acquiring and tracking signals, especially under low SNR circumstances, which can decrease the positioning accuracy and even lead to wrong positioning results. Meanwhile, if there are multipath signals mixed in the receiving signal, the autocorrelation curve will be greatly distorted, and the number of side-peak will also increase exaggeratedly, which could deteriorate the situation mentioned above. A multipath cancellation method based on TK (Teager-Kaiser) operator is proposed in this article, which could not only detect the right peak in the autocorrelation curve, but also eliminate all the other multipath signals. As a result, this method could avoid the false lock of code phase and guarantee the high precision fix results.
Trajectory Planning of Delta Robot for Dynamic Tracking, Pick and Placement
Authors: Chen Guang Feng , Zhai Lin Lin , Li Lei , Shi Jia Wen
Published: April 2013

This paper focus on the trajectories planning for Delta robot, which is used to dynamic tracking, pick and place workpiece on packing line. According to the practical action requirements, defined the desired path for end actuator in Cartesian space. The control trajectories are divided into several line segments. For each section, the control points are calculated with the modified sine computing terminal trajectory. To tracking the workpiece on conveyor, a mathematical models is developed to describe the target position and limitation of robot hardware. Newton's method is adopt to solve the model. Through calculating the right angle coordinate system of key points with inverse kinematic in joint space, generating a feasible motion control track. A demo trajectory is generated to verify the feasibility of the scheme.
Research on the Simulation of the Charge Mathematical Model of the Vehicle Starting Battery
Authors: Li Pei Ying , Pan Yu Tian
Published: April 2013

In order to meet the demands of practical, convenient and quick charge requirements, a mathematical model of a certain type of vehicle starting lead-acid battery is established. Using the method of circuit analysis, the model parameters are identified by the known test data. In addition, battery charge model is simulated in each charge stage using the intelligent three-stage charge method, simulation waveform and test waveform fit very well, absolute errors between them reach to 10-6. Simulation results show that the mathematical model and its analysis method is proper for the charge characteristics of vehicle starting lead-acid battery. This has a good guidance to design intelligent charger and extend the battery life.
Design and Application of the Wireless Grain Information Remote Monitor System
Authors: Qiao Chang Fu , Yin Shou Yi , Ling Li , Cheng Ren Jun , Xu Chang Liang , Wang Jun
Published: April 2013

Due to the grain storage located in remote areas, the existing Monitor System for Grain is just monitored locally，and it is difficult to achieve remote monitoring. This article describes a wireless grain information remote monitoring system. The system base on wireless sensor networks, and use 1-wire bus temperature sensor DSl8820 to sample the grain temperature real-time. Finally, through the GPRS network, implement the remote monitoring system. This system is suitable for all kinds of grain storage, and has a stable and reliable, strong scalability advantages.
The Simulation of Retinal Inner Plexiform Layer Based on Parallel Algorithm
Authors: Wu Zhi Long , Wang Zhi Jie
Published: April 2013

The final objective of retinal simulation is to construct an artificial computer retina to replace the biological retina, and to offset the vision-impaired people. Due to the complexity of the retinal structure and the great number of bipolar cells and ganglion cells in retinal (exceeding tens of millions), both the speed and accuracy of the simulation of the retinal up to date are at a low level. In this paper we present a method for the simulation of inner plexiform layer of retina based on Compute Unified Device Architecture (CUDA) parallel algorithm to achieve the maximum utilization of CPU and Graphic Processing Unit(GPU), and to improve the speed and accuracy of the retina simulation.
Study on Numerical Simulation of a Fire on Heavy Oil Tank
Authors: Lin Cherng Shing , Chen Te Chi , Yu Chia Chun , Wang Shih Cheng , Chang Wen Lung
Published: April 2013

Oil is important energy nowadays. Most oil products, such as gasoline, coal oil and diesel oil, are important fuel too. Tanks serve as storage to preserve various petroleum products. These dangerous inflammable articles require not only as much safety protection as possible but also safety intervals between tanks. Once a fire occurs to a tank, its combustion expands very fast and violently. Without sufficient intervals, chain reaction is very possible to happen and cause a disaster out of control. Fire of oil tank is not common, thus experience of extinguishing such fire is also extremely lacking. Therefore, it is important to research on tank fire and report quantified data. This study adopted numerical analysis method to simulate a fire in a tank area by applying Fire Dynamics Simulator (FDS), and investigate the effect of various related parameter on tank fire. The anticipation of this study is to provide fire protection information of various types of tanks in order to reduce the impact of such fire on environment and resource.
The Agorithm Based on the Discrete Fourier Transform of Eye Detecting and Locating
Authors: Qu Shu Wei , Guo Zhi Hong , Wang Fan
Published: April 2013

Fatigue has a serious influence on people’s production and life. In this paper, which using the discrete Fourier transform algorithm to segment and extract person's facial image, so we can have a effective monitoring of people’s fatigue state base on the facial characteristic. With the help of the parameters characteristic of the Fourier transform, we can extract the key facial information from the image and achieve accurate position of the eyes. Simulation results show that the use of discrete Fourier transform to the exact position of the human eye, having a greatly improve on the operation speed of the eyes position system, and improving its accuracy and robustness.
Applying Service-Oriented Composition Process in TPMS
Authors: Yang Cheng Wei , Wu Lei , Liu Shi Jun , Meng Xiang Xu
Published: April 2013

Nowadays, the companies must adapt their business processes changing more dynamically in accordance with rapidly changing market conditions and IT systems. This paper extends our previous method, which shows a novel approach to integrate a service system. In this paper, we focus on the integrated problems of the Business Process Management System (BPMS). The service is encapsulated as a SCA service component，which is extended to be a service surrogate. Meanwhile, the XML-based process template is used to define the composition process. An interactive access control strategy based on service components is also proposed. At the end of this paper, it is applied in the textile-order process management system (TPMS) as a case study.
Application of Electronic Bills of Lading in International E-Commerce
Authors: Liu Dong Hua , Xiao Xiao Kong
Published: April 2013

The traditional bill of lading is of great value in the maritime industry. However, as electronic communication takes over in international trade, the electronic bill of lading is now being considered first in some situations. A brief introduction of the bill of lading will be made together with a general comparison between the traditional bill of lading and the electronic bill of lading. Further analysis will concentrate on the issues of how the electronic bill of lading applies in some particular international e-commerce cases and how we can improve the new electronic data interchange system. Finally, this paper aims to demonstrate that it may be advantageous to ultimately switch entirely from the paper bill of lading to an electronic one in a modern e-commerce-driven society.
Garment Production Process Optimization Based on the Splicing of Knitting and Tatting Fabrics
Authors: Wang Wei Zhen , Qian Xiao Nong , Wang Ya Zhen , Li Dan
Published: April 2013

Based on the splicing of knitting and tatting fabrics and the optimization of process realization route, the author tries to improve the drawbacks in traditional splicing of knitting and tatting fabrics in terms of process technology and thus extend their respective advantageous properties. Through the analysis of fabric properties difference, integration of structural characteristics of parts, optimization of sewing process and post-production process reengineering, the author proposes the prerequisites and principles related to the splicing of two fabrics, and discusses the common problems in the splicing of knitting and tatting fabrics and specific process optimization route.
Outdoor Clothing Ecodesign Using Zipper as Functional Transformation Medium
Authors: Wang Wei Zhen , Shao Bing , Wang Li Zhen , Wu Nan , Zhang Gui Ying
Published: April 2013

Outdoor clothing may vary multiple styles by means of opening, closing or replacing zipper and display different exterior profiles and functions in order to better satisfy the needs of outdoor activities. Using zipper as the transformation medium in synchronous transformation experiment for outdoor clothing and bag in style and function, this study realizes the perfect combination of practicality, functionality, aesthetics and enjoyment of products, extends the design concept of functional outdoor clothing and gives suggestions on ecological development of outdoor clothing.
Experimental Researches Concerning the Manufacturing of Titanium Alloy TA6V Powders Used to Selective Laser Sintering
Authors: Băilă Irinel Diana , Lazăr Veronica Livia
Published: April 2013

Titanium alloy TA6V is chemically inert and which only reacts at high temperatures with various gas, can be used in medicine for medical implants through the process of selective laser sintering. It also shows a low toxicity to the human body and adheres well as implant in the human body. Therefore titanium alloy powder necessary for selective laser sintering must present a high degree of purity. This can be achieved by getting titanium alloy powder process hydride-milling-dehydrate.
Wavelet Entropy Based Floating Thread Defect Detection for Tufted Carpet
Authors: Zhai Lin Lin , Chen Guang Feng
Published: April 2013

This paper proposed the floating thread defect detection method base on wavelet entropy for tufted carpet. The method first get the image from cam and preprocesses the captured image with filtering, then using Wavelet Entropy to judge whether there are defects in the image. For image consist of defects, apply further thresholding operation to the image. Closing operation was adopted to eliminate noise and highlight the defects. At last, nine samples image were tested to verify the feasibility of proposed method.
Measure Energy Consumption Combined Heart Rate and Acceleration
Authors: Li Zhang Yong , Chen Xiao Bo , Leng Rui , Chang Fei Ba
Published: April 2013

This paper put forward a new kind of motion energy expenditure calculation model that combine movement heart rate, acceleration, height, gender, age, weight and other personalized parameters. In this model, using heart rate and personalized parameters to calculate the based energy consumption (BEE). Using acceleration and personalized parameters to calculate the movement work (EEact). The experimental results show that this method has a high accuracy in movement energy expenditure. So using this method can eliminate the contradiction between measurement accuracy and measuring cost.
The Study of Skeletal Muscle Weight Change on Female Elder Adults
Authors: Yeh Chang Tsang , Lin Shu Cheng , Lin Hung Tai , Tsai Hsuan Chun , Cheng Ho Cheng
Published: April 2013

There are several problems after post-menopausal and higher age in the female. It may affect their physiological results, especially in the changes of their body composition. Older adults change their skeletal muscle weight when they are aging. But what differences their skeletal muscle weight change is still unknown. There is little previous research. Therefore, the purpose of this study was to investigate skeletal muscle weight change on female older adult. Methods: 48 women aged 41-80 years old were randomly selected and divided into four different age groups: 41-50 y (14 persons, abbreviated as number), 51-60 y (12), 61-70 y (12) and 71-80 y (10). All subjects’ body compositions were measured. Body composition analysis was conducted using the In Body 220 body composition analyzer. Data analysis was conducted using the SPSS statistical software for Windows 15.0. Independent one-way ANOVA was used as the statistical method at a significance level (α) of .05, followed by the Scheffé’s method to account for multiple comparisons. Results: Statistical analyses show that means of 4 skeletal muscle weight groups was 22.27±2.12(kg), 21.41±2.12(kg), 21.16±2.25(kg), 16.64±1.98(kg), there is significant differences in between 41-50y, 51-60y, 61-70y and 70-80 y group (Scheffé：41-70 y＞70-80 y). Conclusions: This research conclusion is that the skeletal muscle weight were similar from 41 years old to 70 years old in female older adult. But after 71 years old the skeletal muscle weight aging quickly.
Influences of Sufentanil Pretreatment on Ischemia-Reperfusion Injury in Rat Cardiac Apoptosis
Authors: Gao Ming , Zhao Guo Qing , Li Xiao Lu , Gao Da Peng
Published: April 2013

Objective. To investigate the effects of Sufentanil preconditioning on myocardial cell apoptosis. Method. To randomly divide 40 SD rats equally into 4 groups, including sham operation group(SHAM Group), ischemia-reperfusion group(I/R Group), ischemic preconditioning group(IPC Group), Sufentanil preconditioning group(SPC Group). To calculate the numbers of myocardial apoptosis cells. Result. he apoptotic index of myocardial cell that the apoptotic index of 3 groups rises obviously compared with group S (PConclusion.Sufentanil preconditioning can protect the myocardial cell from apoptosis , therefore can protect the hearts.
Effects of Morphine Postconditioning on Myocardial Ischemia-Reperfusion Injury in Rats In Vivo
Authors: Gao Da Peng , Zhao Guo Qing , Wang Jia , Gao Ming
Published: April 2013

Objective.To investigate the effects of morphine postconditioning on Myocardial ischemia reperfusion injury in rats in vivo. Methods. To randomly divide 40 male SD rats equally into 4 groups, including Sham group in which the chest was opened without ligating the left coronary artery, ischemia-reperfusion group(Group I/R ), ischemic preconditioning group(Group IPC ) and morphine postconditioning group(GroupMOR) in which 0. 3 mg/kg morphine was given intravenously 5 min before reperfusion. The left anterior descending coronary arterys(LAD) of rats in five groups are ligated for 30 minutes and are re-perfused for 90 minutes. Cardiac Apoptosis was determined quantitatively by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling （TUNEL） methods． To calculate the concentration of the serum malondialdehyde(MDA) with Thiobarbituric acid (TBA) reaction method and the activity of the superoxide dismutase (SOD) with xanthine oxidase reaction method. Result. Comparing with Group S, the quantity of the cardiac apoptosis in Group I/R, IPC and MOR rised in different levels. Comparing with Group 1/R, the quantity of the cardiac apoptosis in Group IPC and MOR reduced obviously. Comparing with Group 1/R, the concentration of the serum malondialdehyde (MDA) in the other four groups all reduced and the activity of the superoxide dismutase increased. Conclusion. Morphine postconditioning can significantly reduce myocardial apoptosis induced by ischemia-reperfusion injury，reduce myocardial infarct size, decrease the concentration of MDA, and increase the activity of SOD. Therefore, morphine postconditioning has protective effects on myocardial ischemia-reperfusion injury in rats in vivo. Morphine is a potent kind of opioid analgesics, which is widely used in clinical anesthesia. However, further studies are needed on effects of morphine postconditioning on myocardial ischemia reperfusion injury. In order to provide the foundations for clinical application, the authors investigate the effects of morphine postconditioning on myocardial ischemia reperfusion injury through comparison and analysis of the cardiac apoptosis, the concentration of the serum malondialdehyde (MDA) and the activity of the superoxide dismutase (SOD) in Group S, I/R, IPC and MOR.
Epilepsia Partialis Continua Associated with Non-Ketotic Hyperglycaemia
Authors: Chang Ying , Zheng Zhao Shi , Wang Huan Huan , Liu Song Yan
Published: April 2013

Epilepsia partialis continua (EPC) is a rare epileptic syndrome, which may observe in non-ketotic hyperglycaemia (NKH). Seizures are resistant to antiepileptic drugs and respond best to insulin. Here we report a patient who presented EPC without diabetes. Magnetic resonance imaging revealed subcortical hypointensity signal changes in the left parietal region on T2 weighted and FLAIR images. Her symptom remitted completely after correction of hyperglycaemia. We suggest that EPC may be the first manifestation of undiagnosed diabetes.
Web-Based Safety-Oriented Healthcare System Using Innovation Process for Patient Safety
Authors: Yang Yao Jung
Published: April 2013

The U.S. Institute of Medicine (IOM) estimated that 44,000-98,000 Americans die annually from preventable errors in hospitals and that the cost of deaths and injuries is between $17 and $29 billion U.S. dollars per year in the U.S. Knowledge that healthcare systems and processes may be unreliable and lacks a consideration for safety. Patient safety is a global challenge that requires knowledge and skills in multiple areas, including human factors and systems engineering [12]. Patient safety has received attention by international health organizations. In 2004, the World Health Organization lunched the World Alliance for Patient Safety. The World Alliance for Patient Safety has targeted the following patient safety issues: prevention of healthcare-associated infections, hand hygiene, surgical safety, and patient engagement2. This paper This paper presents a safety process methodology and system to reduce the safety gap of patient safety process. The aim of this study is to propose a Safety Process Innovation Methodology (SPIM) and implements a web-based new safety-oriented system that combines the Quality Function Deployment (QFD) and Failure Mode and Effects Analysis (FMEA) to determine essential safety when conducting process innovation for support patient safety.
Analyses of University Staff Members’ Health Fitness - A Case Study on Asia University
Authors: Lee Tsui Er , Wang Hsiu Chin , Huang Yu Ting
Published: April 2013

Objective: to understand the effectiveness of the health and fitness evaluation among the staff members in Asia University. Method: Evaluating and analyzing 95 staff members by using descriptive statistic (17 male, 58 female). The average age of male was 37.73, and 31.59 years old for the female. The evaluation included physical health norm and physical fitness level. The result showed that the average male BMI was over the standard, with blood pressure a little higher than normal. The female BMI and blood pressure were showed as normal. The waistline of both male and female were normal. In the physical fitness area, the male aerobic fitness level was normal, muscular strength was very good and flexibility was normal. The aerobic fitness level of female was normal, muscular strength was good and flexibility was poor. In conclusion, both male and female staff members were doing well in terms of their physical fitness. The male staff members especially need to control their weight in the BMI area. The female staff members should use stretching exercises to improve their flexibility. By doing the health and fitness evaluation helped us to understand the participation in physical activities of the staff members. Their physical fitness level indicated as a reference for their personal physical and health status. Practicing health and physical evaluation has a positive meaning and qualitative reasons. In promoting physical fitness activities and gets the staff members to involve in physical activities in daily basis also develop it as a lifetime habit. Not only to improve the staff members’ health and fitness level effectively, but also the quality of their life.
Heart Sound Monitor for Bio-Signal Learning
Authors: Tunlasakun Khanchai
Published: April 2013

This research presents the design and development of the heart sound monitor for bio-signal learning which can be worked with a personal computer. The prototype will receive the heart sound via the condenser microphone built-in the stethoscope. The condenser microphone will be conversed the air pressure from heart beats to electrical signal that signal will transformed to computer via sound card. The sound card will be conversed the analog signal to digital signal for process by heart sound processing program developed by LabVIEW program. The signal will be analyzed with short time Fourier transforms in heart sound processing program by graphical user interface. The user is able to select a band pass of signal for filter and choose the power spectrum of heart sound for display. The output database from this prototype is necessary for Medical Education or Clinical Practice. The prototype was tested and it worked satisfactory.
Extraordinary Properties and New Functions of Nanocomposite Gels and Soft Nanocomposites with Unique Organic/Inorganic Network Structures
Authors: Haraguchi Kazutoshi
Published: April 2013

New types of polymer hydrogels and nanocomposites, i.e., nanocomposite gels (NC gels) and soft, polymer nanocomposites (M-NCs), with novel organic/inorganic network structures have been fabricated. Both NC gels and M-NCs were synthesized by in-situ free-radical polymerization in the presence of exfoliated clay platelets in aqueous systems and were obtained in various forms and sizes with a wide range of clay contents. Here, disk-like inorganic clay nanoparticles act as multi-functional crosslinkers to form new types of network systems. NC gels have extraordinary optical, mechanical, and swelling/deswelling properties, as well as a number of new characteristics relating to optical anisotropy, polymer/clay morphology, biocompatibility, stimuli-sensitive surfaces, micro-patterning, self-healing, etc. The M-NCs also exhibit dramatic improvements in optical and mechanical properties including ultra-high reversible extensibility and well-defined yielding behavior, despite their high clay contents. The M-NC also showed thermoresponsive cell adhesion/detachment. Thus, the serious disadvantages (intractability, mechanical fragility, optical turbidity, poor processing ability, low stimulus sensitivity, etc.) associated with the conventional, chemically-crosslinked polymeric materials were overcome in NC gels and M-NCs.
Liquid-Phase Method Preparation of Water-Soluble ZnS:Cu2+ Nanoparticles and Luminous Performance Research
Authors: Liang Yan , Wang Zhi Long , Zhang Xu Sheng , Wei Li Jiao , Li Cheng Yi , Li Yi , Du Yi Zhou , Zhang Xin Yuan
Published: April 2013

Series samples ZnS: Cu2+ have been prepared by Liquid-phase method and the final productivity has a great improvement compared with traditional method. Different concentration thioglycolic acid (TGA) modified combining nanoparticle makes water soluble ability better. When precipitating agent water and ethanol volume ratio is 3:1, sample production rate is the highest. Under XRD theoretical calculation ,the size of the series of samples are about 16nm , and the sample size is 18 nm while using Laser Particle Size Analyzers（Rise - 2208）measured. Series sample shows strong absorption under 200 nm to 340 nm range. Through absorption spectrum calculating the forbidden band width is about 3.58 eV. Under 210 nm of excitation, the emission spectrum shows that the strongest peak locates in 425 nm which belongs to Cu2 + ions’ t2 transition.
Simulation of Laser Shock Wave Propagation and Dispersion in SHPB
Authors: Zuo Li Sheng , Zhang Xing Quan , Chen Liu San , She Jian Ping , Li Huan , Chen Wei
Published: April 2013

Laser shock wave oscillation caused by lateral inertia effects of Hopkinson bar in large-diameter SHPB apparatus, and the geometry dispersion effect, particularly, the rise time of the stress wave in different diameters and lengths of Hopkinson bar were investigated. The three-dimensional model of member bar is established by the finite element analysis software ABAQUS, and the different shapes pressure pulses including rectangular, triangular and Gaussian pulses induced by laser shock have been loaded on the end face of the bar, respectively. Results indicate that the triangle pressure pulse and Gaussian pressure pulse show less dispersion effect than rectangle stress pulse on wave shape, and Gaussian stress pulse can keep the morphology better and reduce the dispersion effect more effectively than triangle stress pulse in the propagation process. In addition, as the bar diameter increases and the distance of the propagating stress wave raises, wave oscillation enhances significantly in the bar, the same as the rise time of stress wave increases gradually and the maximum stress also has a certain degree of attenuation, which have influence on laser shock processing or forming.
Research on the Charged Omni-Directional Spatial Electric Field Tester
Authors: Liu Yu , Chen Xi , Tang Kai
Published: April 2013

The spatial electric field tester is mainly used for the measurement of high-altitude electrostatic field. The spatial electric field tester will be electrostatically charged during the period it is sent to a certain height by a micro-rocket. In order to study the charge characteristics, the paper analyzes the charging mechanism of the omni-directional spatial electric field tester and builds mathematics model for the friction charging, which is a main factor of the charging process. The numerical calculation and experimental research demonstrate that the friction introduces a slow charge accumulation process for the electric field instrument in the course of its campaign. Under the testing conditions in this paper, the charge amount is 10-11 C within the 6s duration. In order to improve the accuracy of the electric field measurement, a time-frequency analysis method can be adopted to remove the slow-varying electric field signal.
The Research on Modeling and Dynamic Simulation of Gear Box Virtual Prototype Based on Pro/E and ADAMS
Authors: Qiao Li Xia , Zhang Jun Ting
Published: April 2013

In this paper, the combination of Pro\/E and ADAMS to build a virtual prototype model of gear transmission, the dynamic simulation of the gear meshing process, study on dynamic speed, mesh force bearing load, where, for the gear box of the engineering analysis and optimization design. A 3D modeling and designing software, established a parametric model of a gear box of the rack and pinion drive mechanism, which is used in large gantry milling machine XK2425-600. The data interface module MECHANISM/Pro is used to convert the Pro/E model data to ADAMS, and then the virtual prototype is built in it. The rotational speeds, meshing forces, and reactive loads at bearings are obtained by dynamic simulation of the virtual prototype, which can be used in finite element analysis as boundary condition, helped to calculate the strength and stiffness of the box.
Design and Analysis of in-Wheel Permanent Magnet Synchronous Motor Cooling System of Mining Dump Truck
Authors: Sun Hui Lai , Jin Chun , Zhang Wen Ming , Tian Hai Yong
Published: April 2013

In-wheel motor is an important power unit of electric drive mining trucks, a variety of dynamic performance and thermal issues have important impacts on the whole vehicle performance. In this paper, a model of permanent magnet brushless DC motor (BLDC) cooling system with water-cooled stator structure of electric drive mine dump truck is built. Considering the actual cooling systems, the author modeled the bldc motor and completed the electromagnetic simulation with ansoft software to determine the motor heat source and boundary conditions. This paper simulates the cooling water jacket temperature field with fluent software, and finally validated the feasibility of the design of the motor and its cooling system by experiments.
Heat Dissipation Design and Analysis of Large Power Inverters for Electric Drive Off-Road Mine Truck
Authors: Jin Chun , Wu Di , Shen Yan Hua
Published: April 2013

The environment of humidity and high temperature in underground metal mines is not conducive to the heat transfer of converter on electric drive mining truck, and the drive efficiency and lifetime of the equipment are lowered. The article calculated equivalent thermal resistance of radiator, analyzed main factors affecting thermal efficiency. Finite element software was applied to simulate the radiator temperature field of different inlet directions, and then determined fixing angle of air blower which had best cooling effect.
Efficiency Analysis on Three-Dimensional Energy Transmitting System for MEMS inside Body
Authors: Xue Kai Feng , Liu Xiu Quan
Published: April 2013

Wireless energy transmitting technology provides MEMS inside body with a new power supplying approach. At present, the efficiency and stability of a single- dimensional wireless energy transmitting system are still handicaps in practical applications and need improving. In present paper, two structures of multi-dimensional wireless power are presented and compared each other. Single dimensional primary-three dimensional secondary structure is applied in further research. At last System efficiency is expressed after deduction.
Theoretical Analysis of Surface Waves on Liquid Jets in Crossflows with Deformation
Authors: Wang Shao Lin , Huang Yong , Wang Fang , Liu Zhi Lin
Published: April 2013

Liquid jets in cross air flows are widely used and play an important role in propulsion systems, such as ramjet combustors. Surface waves on the liquid jets in gaseous crossflows have been observed in numerous experiments. Especially for lower gas Webber number, liquid jets breaks up due to the surface waves. However compared with injecting into gas coaxial flow, liquid jet will be deformed in crossflow due to the transverse aerodynamic force. Deformation of jet is investigated by analyzing stress force equilibrium of the cross-section. Though linear instability analysis, dispersion relation and growth rate of surface waves of liquid jet with deformation were derived. According to the present theoretical analysis, the cross-section shape can be deformed to stable ellipse only if the gas velocity was lower than 9m/s for 1mm diameter jet. The maximum growth rate of disturbances takes place at wave number 0.7 approximately, and it will decrease with increasing the jet diameter. The range of instable wave number will expand and the most instable wave number will grow for the deformed jets.
Study on the Mobilities with Replaceable Linear Polyacrylamide (LPA) Gel Electrophoresis
Authors: Wang Jie , Guo Li Na , Wang Li Qiang , Shi Yan , Zheng Hua , Lu Zu Kang
Published: April 2013

The replaceable Linear polyacrylamide(LPA) gel was used as the sieving medium; An extensive series of experiments has been performed using DNA fragments ranging in size from 80 to 587 base pairs with laser induced fluorescence detection(LIFD). The electric field was changed from 100V/cm to 375V/cm. The mobilities with LPA in different electric field strength were studied. Although the LPA sieving matrix is commonly used in biological chemistry, these mobilities have not previously been reported. It was different from with the cross-link polyacrylamide and agar gels. The new modification of Ogston model was initiated. This work complements our systematic study on electrophoretic mobilities under different conditions, and will help to further optimize and improve high performance DNA separation in microfluidic applications.
Selection and Optimization of Main Process Parameters in High Pressure Waterjet Clearing HTPB Propellant
Authors: Han Qi Long , Zhu Zuo Ming , Huang Zhi Yong
Published: April 2013

In order to ensure safety and efficiency in high pressure waterjet clearing HTPB propellant, the lower limit of outlet pressure was determined as 60MPa according to the compressive strength of HTPB propellant and the upper limit of outlet pressure was determined as 100MPa through ignition mode analysis and temperature rise experiment. Based on the corresponding empirical formula, the optimal target distance under different outlet pressure was calculated. Through the small size propellant clearing experiments, the main process parameters in high pressure waterjet clearing HTPB propellant were optimized. The optimal processing conditions of safe clearing are 100MPa for outlet pressure, 30mm for target distance, 0.25mm for nozzle diameter, 15minutes for single clearing time and thus the corresponding mass loss and clearing efficiency are 263.3g and 17.55g/min respectively.
Experimental Analysis on Oil Film Properties of Plane Port Pair in Axial Piston Machine
Authors: Wang Bin , Chen Shi Long , Ye Zhi Feng
Published: April 2013

To find some rules keeping good lubrication condition for plane port pair in high-performance axial piston pump or motor, especially in the very severe applications, a new test rig was built up to simulate the operational principle of port pair, and to form the lubricating oil film for representative parameter acquisition. This rig is principally characterized by supply pressure up to 30 MPa, accurate control of oil film thickness by separate oil circuit design and electrohydraulic feedback control. The tested oil film working properties was analyzed by comparison with theoretical or simulation references. Experiments show that film balance time and thickness are two key parameters for describing oil film properties, and that working condition factors such as supply pressure, lubricating fluid temperature also notably affects the film thickness and its configuration, but they don’t show equivalent action. Lubrication effects can be valued by the tested frictional torque change of port pair.
An Improved Clutter Suppression Method for Non-Sidelooking Uniform Linear Array Antennas Airborne Radar
Authors: Zhao Jun , Hang Xu
Published: April 2013

The clutter distribution of airborne radar with non-sidelooking uniform linear array antennas varies with ranges and samples in different range gates are not independent identically distributed vectors, so that the statistical STAP methods degrade greatly. In this paper, an improved clutter range dependence compensation method for airborne radar with uniform linear array is proposed. This method involves in a preprocessing with ADC method to align the mainlobe of clutter spectrum in different range gates and subsequently clutter suppression in other azimuths with EDBU technology. Simulation results show the proposed method can reduce the clutter spectrum dispersion significantly and outperform conventional local compensation methods.
Model Analysis and Optimization Design for Mg-Based Instrument Panel Beam Assembly
Authors: Zhang Lei , Hao Zhi Yong
Published: April 2013

Based on the basic structure in the practical installation condition, the static model of the instrument panel (IP) beam assembly is developed. To reduce the weight, Mg is substituted for steel as the material of the structure. The finite element software is used to evaluate the constraint modal performance, rigidness and strength withstanding the specific load. After the comparison of model analysis with different materials, the Mg-based IP beam assembly is optimized to achieve the performance the steel-based one has. The process offers the reference to the lightweight design of Mg-based IP beam assembly.
Numerical Simulation of Flow Field around DLR_F4 Using Meshless Method
Authors: Ma Xin Jian , Tan Jun Jie , Ren Deng Feng , Wang Fang
Published: April 2013

In order to investigate the calculation ability of meshless method and calculation precision for lift and drag force coefficient based on N-S equations with S-A turbulence model and Euler equations, numerical simulation of flow field around the DLR-F4 wing-body, supplied by the AIAA Drag Prediction Workshop, is employed using meshless method. Furthermore, the calculated results are compared with experiment results and Waller’s simulation results achieved by MGAERO software. It’s found that the present simulation results without consideration of fluid viscosity don’t agree well with Waller’s and experimental results. The present simulation results with consideration of fluid viscosity were found to be in good agreement with experimental results. These results indicate that meshless method coupled with S-A turbulence model could predict the natural flow characteristic around the DLR-F4 wing-body configuration well.
Effect of Doped Iron on Fluoride Sorption by Calcined MgAlFe-CO3 Layered Double Hydroxides
Authors: Pu Yu Bing , Wang Jia Rui , Zheng Hong , Cai Peng , Wu Si Yuan
Published: April 2013

A series of MgAlFe-CO3 layered double hydroxides (LDHs) were successfully prepared by co-precipitation method. With synthetic wastewater, the effect of doped iron on fluoride sorption by calcined MgAlFe-CO3 layered double hydroxides (CLDH) under different pH and contact time conditions was investigated. The sorption isotherm data were fitted well to Langmuir isotherm at 25 °C. The maximum sorption capacity of fluoride on CLDH increases first and then decreases with the increase of Fe/Al molar ratio and attains maximum of 71.94 mg/g when Fe/Al molar ratio is 1:2, although doped iron is unfavorable to the regeneration of original layered structure for CLDH after fluoride adsorption. No aluminium in the solution after fluoride adsorption was detected when Fe/Al molar ratio is equal to or larger than 1:2. The results indicate that CLDH with proper Fe/Al molar ratio is a promising candidate as an adsorbent material for fluoride removal from aqueous solutions.
Electro-Hydraulic Servo Road Simulation System Based on Fuzzy Control
Authors: Huang Da Zhi , Zhou Qing Gui , Zhang Yuan Liang , Chen Jin Song
Published: April 2013

The indoor road simulation test system test cycle is short, good reproducibility of the test results, confidentiality, etc., more and more attention in the vehicle industry. Analyzed by electro-hydraulic servo system of road simulation servo amplifier, electro-hydraulic servo valve, hydraulic cylinder and countertops and displacement transducer, The mathematical model of the system is established. The fuzzy model that comply with control law is designed. By unit step response simulation experiments, it is to be verified that the fuzzy control electro-hydraulic servo road simulation system is able to work better. It is a new attempt in roads simulation control strategy.
Rigid-Flexibility Modeling and Simulations of Lower-Mobility Parallel Mechanisms
Authors: Qiang Yang , Wang Geng Hua , Ji Bian , Hao Luo
Published: April 2013

Considering the flexibility performance of lightweight slender axle in Delta parallel mechanisms, the effects of the elastic deformation on the kinematic accuracy of the mechanism are calculated based on the virtual prototype technology. Firstly, the 3D model of the mechanism is built via ADAMS software. Secondly, the geometric model of the driving rod is imported into ANSYS software to get meshed and generate the modal neutral files. Then, getting back to ADAMS, the original rigid component is replaced with the flexible body which constraint and driving is added to lately. At last, the rigid-flexibility hybrid model of the mechanism is built. Each frequency and vibration mode of the flexible body is calculated, using the simulation capabilities of the software. Furthermore, changes in motion accuracy of the mechanism under the effect of the force-elastic coupling are analyzed comparatively.
Research on Velocity Vibration Characteristics of Stator of Radial Piston Pump in Time Domain
Authors: Zhou Tian Yue
Published: April 2013

The working mode of constant-pressure radial piston pump includes the mode of constant flow and constant pressure. The dynamic model of stator vibration was established and the analysis was made on the stator vibrating velocity in time domain to the two modes. Measurement mechanism was designed to test the vibration of stator of JB32H-type radial piston pump. It is concluded from the analysis and test results that the velocity of stator vibrates periodically on the two modes. The maximum amplitude on the mode of constant pressure is smaller than the one on the mode of constant flow. The conclusions are helpful to the noise control of piston pump.
Pushover Analysis of Pile-Supported Bridge Piers
Authors: Wang Chang Feng , Bao Yi Jun
Published: April 2013

According to Japan Railway seismic design code, truss finite element model is established considering the pile components and foundation nonlinear finite element model in this paper, an analysis on the ultimate horizontal bearing capacity of bridge pile foundation of passenger dedicated line is made and the results of m-method calculation are compared. The analysis results show that: when horizontal force at the top of pier is larger, with the pile side soil horizontal and vertical force continuously into the plastic, the calculation results differ greatly with two seismic specification; the pier top level force-displacement skeleton curve considered pile-soil interaction is available in trilinear description, the analysis results can provide a theoretical basis for the seismic analysis of the pile foundation under rare earthquake.
Crack Growth Life Prediction Based on Monte-Carlo Method for High Cycle Fatigue Dynamic Component
Authors: Liu Wen Lin , Yu Da Zhao
Published: April 2013

The sensibility analysis of the factors to crack growth life has been done. The results show that the input parameters have the following precedence ordering: fatigue crack growth threshold, fracture spectrum, initial crack, fracture toughness, the sensibility values are 11.25, 8.5417, 0.8333, 0.1125, respectively. The model parameters have the following precedence ordering: n, p, C, q. the sensibility values are 6.0417, -3.9583, 1.25, 0.1812, respectively. The reliability analysis was conducted by Monte-Carlo method, the results show that the crack growth life accord with lognormal distribution. The lives with different reliability were obtained. The reliability analysis results of the crack growth life has provided the data for a hybrid approach based on a mixture of the traditional safe-life and damage tolerance techniques which were used as an optimal strategy for ensuring the helicopter structural integrity.
Processability and Mechanical Properties of CB/PVC Composite
Authors: Liu Xiu Qi , Xing He Qin , Zhao Li Li , Wang Dan
Published: April 2013

In our study, a new kind of material was prepared by melt blending with PVC as the matrix and carbon black (CB) as the filler. With the amount of CB increasing, the notched impact strength of composite increased greatly, however the tensile strength declined. When the amount of CB was 30%, the notched impact strength of composite was 9.66 KJ/m2, the tensile strength dropped from 48.3MPa to 33.2MPa. The distribution of CB in the PVC matrix is relatively uniform and no large agglomeration in the PVC matrix.
Studies on the Mechanical Properties of Foam CB-PVC Composite
Authors: Liu Xiu Qi , Xing He Qin , Zhao Li Li , Wang Dan
Published: April 2013

In our study, a new kind of foam composite was prepared by melt blending with PVC as the matrix and carbon black (CB) as the filler, the standard-spline was made in the dumbbell system prototype. Tensile strength and elongation at break were measured at 25°C。When the CB was added greater than 2.0%, with the increase of CB added, the determination of sample mechanical index began to decline, when the CB content was greater than 9%, tensile strength and elongation at break of the composites remained basically unchanged.