bluuebunny/crossref_metadata_2025 huggingface dataset:
Bearing Capacity Calculation of Full-Scale Reinforced Concrete Beam-Column Joints Based on a Strut-and-Tie Model
Authors: Li Zhen Bao , Sun Fen Fen , Guo Er Wei , Wang Wen Jing
Published: August 2013

Based on test results of two full-scale reinforced concrete beam-column joints, carrying capacities of core areas of the joints were calculated and modified based on the strut-and-tie model. The results indicate that the capacities calculated with h-D-regions is smaller than those with h/2-D-regions, and the calculated results with h/2-D-regions agree better with the test results.
Numerical Analysis of Continuous Beam of Reinforced Concrete under Fire
Authors: Ma Yun Ling
Published: August 2013

The continuous beam of reinforced concrete under fire is analyzed by using nonlinear finite element method. The stress and deformation of the three-span continuous beam of reinforced concrete are figured out through five typical analysis. The result shows that the temperature loading has a most disadvantage position similar to the structural loading.
Structure Seismic Response Analysis under Pile-Soil-Structure Interaction
Authors: Zhou Wan , Chen Ming
Published: August 2013

This paper makes a numerical simulation for a high-rise frame building with the basement by using the structural analysis program SAP2000. The seismic response of the building under interaction of pile-soil-structure (SSPI) is analyzed. A parametric study that involves evaluating the linear elastic seismic performance of eleven, thirteen and fifteen story buildings with one underground story, and buildings having one, two, three and four underground stories, and the influence of different soil stiffness was performed. It is found that the SSPI can greatly affect the seismic response of buildings in terms of the dynamic characteristics and deformation behavior. It is found that, for some of the cases considered, SSPI effects increase both the vibration period and horizontal displacement of the buildings. And some rules on seismic performance of buildings with the influence of parameter variation are summarized.
Numerical Analysis on a New Type Cross-Shaped Frame Joint of Steel Reinforced Concrete Special-Shaped Column
Authors: Zhang Xing Xian , Pan Wen
Published: August 2013

In order to facilitate the construction, this paper presents a new type of cross-shaped frame joint of steel reinforced concrete special-shaped column, and the cross-shaped frame joint of new type of specially-shaped column is the regular concrete joint which is added acre steel-shaped steel. Numerical analysis is conducted on a regular concrete cross-shaped frame joint of specially-shaped column of a frame structure in the region with intensity 8 of Chinese intensity scale, and the joint of corresponding new type of specially-shaped column of the same structure, to obtain the conclusion that when the new type of cross-shaped frame joint of steel reinforced concrete special-shaped column is 6% in steel ratio, the ultimate bearing capacity of joint relative to the RC nodes can improve 34.5%.which shows that the cross-shaped frame joint of new type of specially-shaped column can not only has the advantages of convenient construction, accelerate the construction speed, and the shear capacity also has safeguard.
Study on Failure Trend of Double Column Tri-Axis Deflection Machine Structure on Basis of Static Strength Analysis
Authors: Cao Sheng Yong , Zhang Bao Hua , Sun Ying Shi
Published: August 2013

To ensure the safe use of double column tri-axis deflection machine for processing and manufacturing railway vehicles. This paper analyzes the use conditions of double column tri-axis deflection machine, and makes a contact nonlinear finite element analysis on various typical use conditions. The positions of parts subject to danger can be found out through the results of static strength analysis, which finds out the weaknesses and prejudges the failure trend of parts, and which provides guidance for prejudging the faults in actual production and can prevent occurrence of accidents.
Innovation Design of the Multi-Operational CNC Lathe Based on TRIZ Theory
Authors: Jin Yan , Liu Shao Jun
Published: August 2013

Theory of Inventive Problem Solving is introduced in this paper, including its fundamental principles and methods. Contradiction matrix and substance-field analysis are used to solve the concept design problems in engineering. Based on this method, the processing problems of a wrench element are worked out, and 3d model of the multi-operational CNC lathe is designed through SolidWorks software, then the dynamic performance of mechanical subsystem and the strength of key parts are simulated and analyzed, and the results show that the machine tool proves to be successful to meet the intended high precision of the work-piece.
The Body Design and Body Flow Passage Digital Simulation Analysis of the Solar Car
Authors: Liu Xuan Zuo , Wang Hui Min , Zhang Fei , Zhang Yu Long , Liu Qian Cheng
Published: August 2013

This paper designs the three-dimensional body modelling of a solar car prototype mainly according to the World Solar Challenge rules, and carries on the flow field digital simulation analysis. This paper analyzes the air resistance of the car body and adjusts to the body shape, and ultimately gets a model well accorded with air dynamics. This paper provides scientific theoretical basis for the design and manufacture of the solar car prototype.
Analysis of the Adhesive-Bonded Joint Stress in a MW Segmented Assembly Wind Turbine Blade
Authors: Liu Lang , Li Gong Yu , Sun Jie , Liu Qing Bo
Published: August 2013

The stress distribution of adhesive-bonded joint in a MW segmented assembly wind turbine blade under static loading is analysed using finite element method (FEM). It is shown that the maximum principal stress causes the adhesive layer destruction away from the loading end of the sleeve layer. Numerically, the interface layer destruction trend of the adhesive-bonded joint is investigated, and the influence of maximum principal stress distribution by altering the sleeve length is investigated.
The Application of Reverse Engineering in the Mould Injection Parts
Authors: Xie Ying Xing
Published: August 2013

A mold injection molding bottle opener is completed on the basis of reverse engineering technology. First, use laser scanning system to scan split injection molded bottle opener, generate data point cloud. Through reducing the point cloud noise, removing noise point, firing, get accurate data point cloud. Finally, get the physical file based on point cloud files using UG NX 4.0 software.
Pseudo Two-Hop Distributed Consensus Algorithm with Time-Delay
Authors: Peng Huan Xin , Liu Bin , Xu De Hong
Published: August 2013

In this paper, we analyze the pseudo two-hop distributed consensus algorithm with time-delay. If there is time-delay among agents, the convergence performance of distributed consensus algorithms degrades. Supposing that the time-delay in every link is identical and invariant in time and spatial, we analyze the convergence performance of the pseudo two-hop distributed consensus algorithm with time-delay, and calculate the maximum time-delay that the pseudo two-hop algorithm remains stable. Finally, simulation results are provided to verify these analytical results.
The Computation of Azimuth and the Shortest Path between Two Points on the Earth's Surface
Authors: Huang Ting Ting , Quan Ji Cheng , Zhao Xiu Ying , Song Xing Shen , Xiao Rui , Yu Bo
Published: August 2013

In this paper, first, analytic geometry are used to calculate the normal transversal azimuth on the ellipsoid surface, then modification value is calculated to get a more accurate orientation angle. Second, based on geodesic differential equations, segmented cumulation for distance between two points on the ground is brought forward. Each section is a short distance, so the result is more accurate. Moreover, when applyed to the program, angle is all got by anti cotangent function, thus avoiding to cumbersomely judge the quadrant.
The Design of Active Noise Control System in Power Transformer
Authors: Pei Chun Ming , Liu Jiang Tao , Liu Zhen Yu , Ying Li Ming
Published: August 2013

Active noise control system on power equipment is designed. The paper gives overall analysis of the structure of the system. Adaptive control algorithm of control system is designed and simulated by CCS3.3. With other parameters of the system fixed, control effect of the system is analyzed by changing the filter order. As can be seen from the experimental effect, good control effect can be obtained when appropriate parameters are selected.
Kinematical Analysis and Simulation of Stamping Processing Complete Set of Control Line System Based on ADAMS
Authors: Wang Ke , Zhou Ji Ping
Published: August 2013

The technical requirements for sheet metal processing equipment to the complete set of line development. Through the technical analysis of the stamping processing complete sets of control line system,provides based on SSCNET field bus, PLC ,touch screen and the whole line control scheme. And in the light of high-speed plate carrying manipulator and double open buttress unit the two important of control line units are analyzed design. Based on the kinematics simulation, and the interference has been checked by using the ADAMS/Postprocessor module of ADAMS. The simulation shows that the design result accords well with the real situation, which proves the validity and reliability of the motion simulation model. Intends to help of the manufacturing and site commissioning of the first line prototype.
Research on Automatic Exchange of Mill Heads of Movable Beam Type Machining Center
Authors: Cao Gen Ji , Kong Ya Qing , Liu Jiang , Ni Jun Fang
Published: August 2013

After analysis of the mill head magazine, the attachment to the movable beam type machining center XH2125/H-800, which is of SIEMENS840D numerical control system, is developed in this paper, the software contains automatic exchange of mill head function controls. This software compromises the functions of the user variables and the high-level programming language, and is based on the data exchange and data comparison between CNC and PLC. All mill heads locates in the magazine that can distinguish, search and exchange automatically, and this system can display the suggestive information or failure warning safeguard in time on the operation screen to make it easy for user to operate.
The Hydraulic System Improvement of Copper Ingot Hot Rolling Equipment Based on Energy-Saving
Authors: Wang Jian Jun , Hao Su Lan , Pan Lu
Published: August 2013

In the design of hydraulic system, it is not only satisfied the transmission and control, but also needed to consider how to use the system power efficient and reliable. For a workshop of hot-rolled copper ingot production line hydraulic system, through the analysis of energy loss of hydraulic system, improved the hydraulic system of equipment for the purpose of energy-saving, and solved the problem in the process of transformation, achieved the purpose of energy-saving. These can provide reference for the energy-saving design and improvement of hydraulic system.
New Type of Disaster Rescue Robot
Authors: Feng Jian Guo , Wang Shu Li , Yuan Shuai , Bian Cheng Yuan
Published: August 2013

With the accelerated pace of industrialization, information society, the applications of robot is very extensive. Based on rescue robot data studied at home and abroad, they are single function, low efficiency. After the actual research and analysis, the design is a kind of small size, multi-function, high efficiency and long-distance transport convenience intelligent robot. According to the outgoing field image the robot sent back, the operator uses a wireless remote control device, which delivers specific instructions to the robot to start relief work at the scene. The new type rescue robot has two multifunctional pneumatic arm, the left arm has five degrees of freedom and the right one has four. The arms can snatch, cut, crushed and so on. The new robot can not only be applied to both earthquakes, landslides, mudslides and other natural disasters on-site rescue jobs, also can be used for counter-terrorism, riot control, reconnaissance, mine and other dangerous conditions.
A New Compensation Method for Multi-Choice of a Five-Axis Machine with a Tilting Head
Authors: Yin Chun Hui , Jing Huai Jing , Huang Nuo Di , Ren Fei
Published: August 2013

Postprocess capable of converting the cutter location data to machine control data is an important interface between the NC programming design and manufacture.Due to the fact that current research on multi-axis postprocess methods mostly deals with machine tool configurations whose linear and rotational movements are orthogonal, an efficient postprocess algorithm for the five-axis machine with a tilting head is presented in this paper.DMU 80P which is a five-axis machine with a tilting head is selected as an example.Its mechanism model is proposed in this paper according to the mechanism theory.The kinematics model is established using coordinate transformation,and the solution of this model is discussed.Based on these,a window-based post-processor with multi-choice function was developed by VS2010 language.Through the verification by the commercial solid cutting software VERICUT,the feasibility of the algorithm proposed is demonstrated.At last,a real impeller cutting experiment has been conducted and the result further verifies the correctness of the algorithm.
Improved Algorithm for the Circular Interpolation Time Division Method in CNC System
Authors: Yao Xu Dong , Zhao Xiu Ting
Published: August 2013

In order to process parts of different shapes, CNC systems require interpolation operations. Clockwise circular interpolation, for example, the time of the CNC system segmentation algorithm was improved compared with the original algorithm, which is more convenient, accurate, and prove that fully meet the requirements of CNC system. For the CNC programming and improve processing speed is very favorable.
Development of Remote Education and Training Based on Internet of Hydropower Plant
Authors: Chen Tao , Chen Qi Juan , Chen Can , Qiao Liang Liang
Published: August 2013

On the basis of a brief introduction of 6 types of hydropower station operation and maintenance training contents, the methods and skills to develop network video courses are discussed in detail. It also points out the network learning on the video courses will play an important role in safe and reliable operation of hydropower station.
Research on Design Knowledge Retrieval Based on Matlab and VB Language
Authors: Liu Wei Wei , Shen Shu Ying
Published: August 2013

When developing new product, in order to shorten new product development cycle, to reduce the design cost, design engineers need to look for the existing design knowledge for reuse. In the process of reuse, the first thing to do is obtaining and searching design knowledge; then, excluding useless and not related knowledge; searching out the most similar case with new products, including basic parameters, the basic principle and so on. In this paper, Matlab is combined with VB language, and on the basis of similarity principle a case library is designed. It is easy for the designers to retrieve the required information. An example has been used to verify the effectiveness of the proposed method and the simpleness of operation.
Monitoring System of Greenhouse Based on GPRS Wireless Communication Technology
Authors: Liu Min Jing , Dong Xue Ren , Ma Yu Zhen
Published: August 2013

With the development of wireless communication technology and mechanical technology, the combination application of the two technologies to agricultural production has become the inevitable trend of agricultural development. Using Nx5883 wireless remote control terminal, a greenhouse environment monitoring system based on GPRS has been designed. It introduces the composition of hardware and working process of the system. The system can monitor the change of temperature and humidity in environment and soil, soil’s PH, and illumination timely. It transmits the signals and dates to the data terminal though wireless network, then the terminal can make the corresponding feedback. This system can real-time monitor and control the greenhouse environment.
Design of a 0.7~3.8GHz Wideband Power Amplifier in 0.18-μm CMOS Process
Authors: Li Zhi Yuan , Fan Xiang Ning
Published: August 2013

The design of a 0.7~3.8GHz CMOS power amplifier (PA) for multi-band applications in TSMC 0.18-μm CMOS technology is presented. The PA proposed in this paper uses lossy matching network and low Q multistage impedance matching network to improve wideband. To achieve maximum linearity, this PA operates in the Class-A regime. The post-layout simulation results show that the power amplifier achieves 21.9dB of power gain, 22.3dBm of 1dB compression power output at 2GHz. The power adder efficiency (PAE) at gain compression point is 17.8% at 2GHz.
Hydrostatic Support Design of Cooling Copper Roller with Inner Pressure Feedback in Forming Amorphous Ribbon
Authors: Song Yan Ming , Yang Yang
Published: August 2013

Cooling copper roller is the key technology and equipment to amorphous ribbon forming. Rolling bearing support is difficult to obtain high rotation accuracy. A new inner pressure feedback hydrostatic journal bearing is proposed with different recess area. The load capacity and film stiffness mathematical model of hydrostatic journal bearing are established. The Inner pressure feedback hydrostatic journal bearing with different recess area at the diameter of 200mm is designed and manufactured for amorphous ribbon cooling copper roller support structure. The operation tests demonstrate that the rotation accuracy of the cooling copper roller shaft is less than 2μm, which in accordance with the requirements of amorphous ribbon production process.
Simulation Analysis of Cutting Resistance for Cutting Tools with Different Rakes in the Strike Working Condition
Authors: Wang Jian Li , Wang Dian , Liu Jin Hao
Published: August 2013

Brush-cutter would always bring cutting shock in its cutting process, and its not easy to estimate the cutting resistance by usual cutting theory and methods. The present paper emulates real cutting process by using ANSYS/LS-DYNA, and orthogonal anisotropy model was used to symbolize the wood material. The result shows that the cutting tool with a 40 degrees rake is more competent than the ones with 30 degrees and 50 degrees. This result fits common cutting theories, thus the rationality of this research is proved, and a cutting resistance curve is obtained.
Technological Process Optimization of Hot-Machining Numerical Simulation
Authors: Huang Yin Ping , Ma Min Tua , Ning Fu Ping , Chen Rui Fen
Published: August 2013

Applying the CAD/CAE method and the finite element analysis system, It was the research of the optimization technology about diesel body of the ship in the casting process in the paper. There are the functions of finite element software and application method in the paper, too. The analysis method can forecast the castings defects and advance the quality control. Applying the HyperMesh module of finite element software, we can cut the optimization period and realize the flow restructure analysis process to large-scaled complex castings.
Study on the Effects of the Indirect Liquid Forging Die Life
Authors: Li Lan , Tian Long Mei , Zhao Ning
Published: August 2013

In this paper, the influence factors of liquid die forging die life are talked about, mainly for example with the key universal parts Squeeze chamber of indirect liquid die forging. In the Premise to guarantee product quality, the mould preheating temperature, pouring temperature, casting alloy type, suitable and reliable cooling methods and effective paint could influence bigger on the peak and variation range of the mold temperature. These factors should be taken into consideration and remembered its effects for mould design in order to improve die life, further a new direction and thinking of liquid forging die life design criterion will be given.
Optimal Design of Heating and Ventilation for Drying Room Based on Transient CFD Simulation
Authors: Huang Si , Ding Tian Tian , Yan Chao , Wang Zi Sheng
Published: August 2013

Transient air flow and heat transfer in a container-drying room is simulated by using Airpak software in this paper. The transient numerical solutions are obtained for air flow within the drying room including flow speed, pressure, temperature, mean age of air, etc. The analysis focuses on temperature, temperature rise and mean age of air surrounding the container surface with heating time. Drying design is determined by comparing two different ways for heating and ventilation. By means of simulation, it is possible to significantly shorten the drying time of the container corners, and to achieve the purpose of energy saving.
Properties of Porous FeAl Manufactured from Ball Milled Fe/Al Elemental Powders by Two-Step Sintering
Authors: Liu Jing Lei , He Yuan Zhang , Xu Hong , Ye Xian Yong
Published: August 2013

Porous FeAl was manufactured from ball milled Fe/Al elemental powders followed by medium temperature solid diffusion and high temperature sintering. Phase composition and porous structure were analyzed by XRD, SEM, Mercury Porosimeter and permeability test system. High temperature oxidation in air and high temperature sulfidation in SO2(3v%)+N2 at 600°C were carried out to investigate the behaviors of the porous FeAl, and the results were compared to 316L porous materials. The result showed that high sintering temperature hastened the transform of Fe2Al5 to FeAl intermatellic. The permeability of the porous FeAl increased and the most probable size decreased with sintering temperature. The porous FeAl had mass gains of 0.06% for air oxidation and 0.13% for sulphidation after 50 h at 600°C, compared with mass gains of 0.15% and 5.3% respectively of porous 316L stainless steel.
Research on Fuzzy Random Reliability Based on Partial Least-Squares Regression Model
Authors: Zhang Yun Feng , Sun Zhan Jie , Liu Yang
Published: August 2013

The main factors that influence the metal wear performance are determined .Wear Prediction model is developed based on partial least-squares regression method including the four parameters. The fuzzy and random characteristics of metal wear are analysed and the fuzzy random reliability prediction of of wear is carried out according to the wear prediction model . The modal is generally used when the materials and working conditions are similar, and the wear reliability can be made if the distribution of the influencing factors are given.
Effect of Li on Corrosion Resistance of Nearly Eutectic Al-Si Casting Alloys
Authors: Cai Yuan Xing , Zhao Zhong Kui , Wang Zhi Gang
Published: August 2013

Lithium was added into ZAlSi12 casting alloys to produce Al-Si-Li alloys containing 0%Li, 1%Li, 2%Li and 3%Li respectively. The corrosion performance of the alloys containing various content of lithium was tested by the Tafel polarization curves and the alloys were dipped thoroughly into the solution of 5% NaCl. The surface appearance of the alloys after corrosion was observed by Scanning Electron Microscopy, the composition of corrosion products was determined by Energy Dispersive Spectrometer. The results show that the corrosion resistance of ZAlSi12 casting alloys is improved by the addition of lithium. The alloy has an optimum corrosion resistance when the lithium content is 2%, and then the corrosion resistance decreases as increment of lithium content.
Study on Corrosion Electrochemical Behavior of X42 and 16Mn Steel in Seawater
Authors: Li Bao Guo , Tong Xing Hua , Liu Yong , Wang Yan Gang , Zhu Lin Sen
Published: August 2013

In order to study the corrosion characteristics of 16Mn and X42 steel in natural seawater, the indoor contrast corrosion experiments are carried out in seawater by electrochemical method. Tafel polarization curves and electrochemical impedance spectroscopy (EIS) techniques are employed to investigate the corrosion electrochemical behavior of 16Mn and X42 steel, which are acquired by electrochemical workstation. The results of polarization curves and EIS reveal the respective corrosion rules of 16Mn and X42 steel in natural seawater. At last, the different influence of corrosion scale on the corrosion process of 16Mn and X42 steel is analyzed contrastively.
Thermal Decomposition Mechanism of 2-Nitroimino-5-Nitro-Hexahydro-1,3,5-Triazine (NNHT)
Authors: Ren Ying Hui , Zhao Feng Qi , Li Wen , Yi Jian Hua , Song Ji Rong , Wang Xiao Hong
Published: August 2013

The thermal properties and the decomposition mechanism of 2-nitroimino-5-nitro-hexahydro-1,3,5-triazine (NNHT) were studied by DSC-TG-IR-MS technology. The results show that the hexahydric ring framework cracking and the nitroamino group [NNO2] breaking induce to the major exothermic decomposition process. The gaseous products are H2O, N2, CO2, N2O, HCHO, NH3, CH2, NH2, CHO, HCN, HNCO, and NO2.
Fabrication Processing and Tribological Properties of Al2O3/TiFeCrWMoV Based High Temperature Self-Lubrication Composites
Authors: Han Ying , Wang Yan Jun , Wang Shou Ren
Published: August 2013

Metal ceramic preforms were fabricated by vacuum sintering method in this work. Ti-Fe-Cr-W-Mo-V powder was used as the basic material, TiH2 and CaCO3 were used as the composite pore-forming material and Al2O3 was used as dispersal particles. The influences of fabricating parameters on infiltrating qualities and mechanical properties were discussed. The friction and wear behaviors under high temperature were investigated by pin on disk wear tester. Moreover, the microstructure and the worn surface morphology of the preforms and the composites were analyzed using scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). The experimental results showed that the composite, which was sintered at 1230 oC with a holding time of 60min and was infiltrated by melt solid lubricant under a pressure of 5 MPa at 750 oC, exhibits good friction and wear behavior. The composites composed of metal ceramic hard phase and multi-lubricant soft phase with an interpenetrating network exhibit good self-lubricating properties, high obdurability and wear resistance over a range of temperature at 400-700 oC.
Investigation on Fabrication of Glass Fiber Reinforced Polypropylene by Recycled FRTP and their Properties
Authors: Ma Jing Li , Jin Huan Lin , Cao Zheng Bing , Wang Shang De , Liu Jun Liang , Yan Chang Hao , Zhang Ming
Published: August 2013

In this paper, glass fiber reinforced polypropylene composites have been successfully fabricated via double screw extrusion by using mechanical crushed leftover materials as the raw materials with maleic anhydride grafted polypropylene (PP-g-MAH) and γ-ammonia propyl-triethoxy silane (KH-550) as the compatilizer and coupling agent, respectively. The influences of the contents of PP-g-MAH and KH-550 on the micro-structures and crystallization as well as mechanical properties of the fabricated composites have been systematically investigated. The results showed that: the recycled raw materials were homogenously dispersed in the polymer matrix without obvious agglomerations; with adding the recycled raw materials and compatilizer, the crystallization behaviors of PP did not changed dramatically while their thermal stabilities were greatly improved; the tensile strength of the product increased by 14% while notched impact strength increased by 21% as the contents of PP-g-MAH and KH-550 were 10phr and 1phr, respectively.
The Assembly of Nanowires by Dielectrophoresis
Authors: Zeng Jing , Wu Zhi Zheng , Peng Yan , Liu Mei
Published: August 2013

This review paper introduces the principles and successful examples of dielectrophoresis (DEP) which was used to position nanowires suspended in fluid medium between two electrodes. The main external affect factors of DEP assembly are discussed in detail, including the potential and frequency of applied electric field, the electrode structure, and the concentration of the nanowire solution.
Micromechanics Model for Nanovoid Growth in Nanocrystalline Materials
Authors: Zhou Jian Qiu , Wang Lu , Ye Zhi Xiong
Published: August 2013

A theoretical model to describe the nanovoid growth by emission dislocation shear loop in nanocrystalline metal under equal biaxial remote stress was developed. The critical stress for emission of dislocation was derived by considering the effects of surface stress. Within our description, dislocations emitted from surface of nanovoid were piled up at grain boundaries and the stress field generated by arrested dislocations can prevent further dislocation emission. The effect of grain boundary of nanocrystalline materials on nanovoid growth was investigated, and the results showed that the smaller of the grain size, the harder for the nanovoid growth.
The Optimization Analysis of the Lifting Structure of the Buried Garbage Compression Station
Authors: Zhong Ming Qiu , Xiao Han Bin , Huang Qing , Wang Heng Zhi , Ye Yi Xi
Published: August 2013

In this paper, the dynamics software ADAMS and the finite element software ANSYS combine to optimize the lifting structure of the buried garbage compression station, and the stress of the prototype is detected. After optimized, the thrust of the hydraulic cylinder of the lifting structure significantly reduce.And the structure of section bars joint is consise, so the manufacturing process becomes simple, reducing welded defects. This optimized structure improves the economic efficiency, and can promote the use of other machineries.
The Analysis of Bearing Life of Drive Gear Box of NC Gear Shaping Machine Based on Romax
Authors: Chen Yong Qing , Xu Li , Xu Xing He
Published: August 2013

As the key system of NC gear shaping machine, the principle property of the drive transmission system have a decisive influence upon a complete machine. The virtual prototype of drive gear transmission system was created by Romax analysis software in this paper, and made simulation after establishing some constraint conditions according to the working conditions. Both ISO 281 and Romax Adjusted are applied to analyze and predict fatigue life of each bearing, then through using the principle of Miner, all the damage percentage were added together under different conditions. The results showed that all bearings used in the virtual prototype of drive gear transmission system meet the requirements of mechanical performances. This study provides theory basis for follow-up design and optimization on NC gear shaping machines drive transmission system.
Effects of Resin Injection Speed on the Bubble Content of Glass Fiber Laminate
Authors: Shi Jing Wen , Jiang Jian Jun , Zeng Dong Zi
Published: August 2013

In order to eliminate the bubbles during composites manufacturing, a special performance was designed. And the effects of the speed of the resin injection on bubble content were investigated. The results demonstrate that the speed of resin injection has distinct effects on the bubble content. When the speed of resin injection is slightly higher than the speed of capillary injection, the bubble content of the test pieces with latitudinal fiber bundles is more than the test pieces without latitudinal fiber bundles. But when the speed of the resin injection is slower than the speed of capillary injection, the bubble content of the test pieces with latitudinal fiber bundles is less than the test pieces without latitudinal fiber bundles. These results will provide a reference for the design of RTM process parameters.
Application of Porous Chitosan/Gelatin Bone Scaffolds Used in Bone Tissue Engineering
Authors: Lou Ching Wen , Wen Shih Peng , Chung Hsiu Ying , Lu Chao Tsang , Lin Jia Horng
Published: August 2013

Chitosan (CS) and gelatin (G) both have good biocompatibility and biodegradation, qualifying them for use in tissue engineering. In this study, CS and G are blended with different ratios to make the mixture solution, and then freeze-dried to form three-dimensional porous CS/G bone scaffolds. The surface, cross-section, porosity, and pore size of the resulting bone scaffolds are observed and analyzed. According to the experimental results, the addition of gelatin gives the CS/G bone scaffolds morphology with few pores. As can be seen from SEM observation, there are linear pores in the cross-section. In addition, with a larger quantity of gelatin, the CS/G bone scaffolds have a lower porosity.
Effects of Processing Parameters on Constant-Rate Puncture Resistance Behaviors of Compound Fabrics
Authors: Lou Ching Wen , Li Ting Ting , Lin Jan Yi , Lin Mei Chen , Lin Jia Horng
Published: August 2013

The effect of Kevlar fibers amount, number of layers, thermal bonding and fabric type on constant-rate puncture resistance of low-cost compound fabrics are discussed. Therein, compound fabrics were prepared by nonwovens and woven fabric via needle-punching and thermal bonding processes. The result shows that, Kevlar fibers amount and number of layers are both positive to improvement of puncture resistance. And thermal bonding process increases the wearer safety of puncture-resistance materials. For different kinds of fabrics, compound Kevlar fabric shows the maximum puncture resistance.
Enhancement of Corrosion Resistance of PEO Coating on AZ91 Biomedical Magnesium Alloy by Surface Laser Treating
Authors: Wang Miao , Wang Yun Long , Liu Zhong De , Ding Hua
Published: August 2013

Ceramic coating was fabricated on AZ91 biomedical magnesium alloy by plasma electrolytic oxidation. The coating was then subjected to surface laser treating, and the influence of laser treating on the morphologies and corrosion resistance of the coating were investigated. The results showed that PEO coating without laser treating showed coarse and porous surface and the pores on coating surface were big. When subjected to laser treating, the pores on coating surface became little and few. The corrosion tests in SBF indicated that corrosion resistance of PEO coating on magnesium alloy sample could improve the corrosion resistance of the substrate, and surface laser treating could further increase the corrosion resistance.
Influence of Centrifugation Time and Force on Monodispersion of MWCNTs Aqueous Solution
Authors: Lu Shao Wei , Zeng Xian Jun , Nie Peng , Zhang Chun Xu
Published: August 2013

Achieving the monodispersion of Multi-walled carbon nanotubes (MWCNTs) is a challenging work for CNTs application. Centrifugation as a standard procedure was employed to remove remaining large bundles and leaving primarily individual nanotubes and small bundles in the supernatant. The optimum centrifugation time and force were 30min and 12×103g, respectively , which were determined by UV-vis absorbance, transmission electron microscopy (TEM), Zeta potential and the residual MWCNTs concentration after centrifugation. Through centrifugation treatments, the uniform and stable MWCNTs monodispersion can be obtained and the Zeta potential was as high as-53.8mv after one month. The film formed from optimized MWCNTs monodispersed solution is smooth and flexible.
Deform Based 1Cr18Ni9Ti Pipe Joint Upsetting Extrusion Process Finite Element Numerical Simulation Analysis
Authors: Huo Zhi Yi , Li Ying Zhi , Sun Xiu Qian , Wang Qian
Published: August 2013

Internal Defects are more likely to occur when 1Cr18Ni9Ti pipe joint are produced by traditional casting method or welding forming method, while the upsetting extrusion proposed in this essay can not only meet the part quality requirements, but also save material and shorten processing cycle. By numerical simulation analysis about part upsetting extrusion forming process with the finite element analysis method, we can obtain many index numerical values in part forming process, and therefore provide reliable quantitative basis for optimum design.
Evaluation of the Coulomb Friction Coefficient by the Erichsen Test
Authors: Giuliano Gillo
Published: August 2013

In this study, the Erichsen test is used to identify the friction coefficient of the Coulomb friction model coupling experimental tests results with numerical ones. The evaluation of the Coulomb friction coefficient is based on the distance measured between the thinnest area of the specimen and the lateral surface of the blankholder. Two types of aluminium alloys, AA 2017 Al-Cu alloy and AA 5083 Al-Mg alloy, with thickness of 1.0 mm are selected as the experimental materials for Erichsen test. Specimens are tested in unlubricated condition as well as using two different lubricants, namely Grease LB4 and Mexmoly.
Product Innovation Design Method Based on Pan-Ethnic Group Design Gene
Authors: Jiang Chao , Yao Lan , Yu Sui Huai , Chen Deng Kai
Published: August 2013

Proceeding from the industrial design, the conceptions of product design gene are studied, the knowledge structure of product design gene is analyzed, the hybridization and variability technology of design gene is researched, and the innovation design method based on pan-ethnic group design gene is proposed. And the feasibility and effectiveness of this new method are discussed.
Design Planning and Top-Layer Design of Products
Authors: Wen Bang Chun , Li Xiao Peng , Liu Shu Ying , Wang Wei Zhou , Wang Zong Yan
Published: August 2013

The A new design method of the products named Top-layer Design has been proposed in this paper. From the view of the point of the system engineering, the planning of product design makes the product design qualities improve to a great extent. Besides the understanding of the client requirements, the design planning of products, the so-called 7Ds: Design ideas, Design environments, Design objective, Design process, Design contents, Design methods and the Design quality evaluation, should be considered completely and planned systematically.
Product Evolution Design Oriented Quality Characteristic Positioning Based on Two-Dimensional Space
Authors: Duan Gui Jiang , Wang Yang
Published: August 2013

How to identify customer requirements exactly and put them through the entire product development is the key of improving customer satisfaction and increasing product competitiveness. Product development was treated in the perspective of quality characteristic evolution and an evolution process model was constructed in this paper. To guarantee the direction of QCs evolution, a QCs positioning framework consisting of 3 phases was proposed. QCs two-dimensional space was built with vertical and horizontal series which were obtained with methods of dynamic Kano model and fuzzy C-means clustering. QCs potential areas were selected with customer intention and product distribution investigations and QCs target areas were finally identified based on analysis on customer satisfaction and importance weight with quarter diagrams. A case of combustion engine was provided to illustrate the application QCs positioning framework.
SIGSO Satellite Tracking Characteristics of Large-Diameter Parabolic Antenna
Authors: Cui Jun Xia , Shi Hu Li , Lv Chang , He Rui Zhu
Published: August 2013

SIGSO satellite is a special kind of geosynchronous orbit communications satellites. Its orbit height is the same as geostationary orbit, but its inclination varies periodically and annually, with variation in the range of 0 ° to 15 °. When communication master station uses large-diameter antenna tracking SIGSO satellites, only a fraction of 1 degree of the antenna beam width is relatively small along with its inclination becomes bigger. Then which kind of tracking mode should be selected to keep precisely pointing to the SIGSO satellite becomes a very important issue. This paper takes Apstar-1 satellite as an example to analyze SIGSO satellites motion characteristics. Pros and cons of a 16-meter antenna with Truss-step tracking Apstar-1 satellite were studied and actual measurement was carried out in Beijing. Finally, mono-pulse tracking and turntable antenna mount is recommended which lays a good foundation for the system optimization design.
Study on Bio-Pharmaceutical Industry Development Route and Strategy
Authors: Mei Yan Lan , Gui Ping
Published: August 2013

Since recent twenty years, the rapid development of biotechnology has boosted the rapid development of bio-pharmaceutical industry,and bio-pharmaceutical has already stepped into our daily life.Starting from the summary of bio-pharmaceutical industry,the paper makes a SWOT analysis on bio-pharmaceutical industry,making the strengths,weaknesses,opportunities and threats of bio-pharmaceutical industry clear;and focusing on a deep study on the development routes and all stages strategies of bio-pharmaceutical industry in our country.
Parameter Mapping Method of the Skull Restoration Based on User Demand
Authors: Liu Jin Wei , Guan Tian Min , Chen Yong , Shan Li Jun
Published: August 2013

Parameter mapping method was put forward, through the skull restoration design and manufacture based on user demand. Considering the cost, time, resource utilization rate and feasibility, the conversion of the skull prosthesis design parameters and mapping between the design parameters of user needs were realized. The effectiveness of the method was verified through the example analysis, which provided a basis for the design and scheme of the skull restoration.
Dynamic Simulation and Optimization of Suspension Rig Based on ADAMS
Authors: Zheng Xi Jian , Ma Jin Xia , Chang Xiao Hua
Published: August 2013

Take the large load temporarily installed suspended access equipment ZLP3000 by self-designed as the prototype, the rigid-flexible coupling dynamic model of suspension rig was established by using ADAMS based on the virtual prototyping technology. First, the reliability and accuracy of the model were verified by analysis of the model dynamics simulation. Second, the sensitivity analysis report of model design variables were generated by the establishment of the suspension rig parametric model. Finally, the parametric model was optimized based on the results of the sensitivity, the optimum scheme of suspension rig force bearing point and steel wire ropes lifting position were obtained, which could provide the basis for the rational use and layout of the steel wire ropes and steel.
Finite Element Analysis of Glass Fiber Reinforced Plastic Hyperbolic Natural Draft Cooling Tower
Authors: Li Yun Long , Meng Chun Ling , Wu Nian Peng , Zhang Wen Hua
Published: August 2013

Applicating the finite element analysis software Ansys to do finite element analysis of a glass fiber reinforced plastic hyperbolic natural draft cooling tower .Under the working condition of gravity and wind load, to contrast the two models of the presence or absence of abdominal rod displacement, stress and unit axial force, and check the stability of compressive bar, and structural optimization. Analysis results can provide reference for the structural design of hyperbolic cooling tower.
Connections Checks of Pipe-Laying Barge Stinger System under Complex Loading Conditions
Authors: Zhao Tian Feng , Qi Jin Long , Zhou Huan Hong , Duan Meng Lan
Published: August 2013

Fixed stinger system hanging in the stern to implement pipeline S-lay mainly includes an A-frame, a stinger hitch section, a stinger tail section, a knee-brace and a knee-brace hitch. Expect the functional loads the stinger system may suffer environmental loads in construction area and also the inertia loads induced by barge movements. Contrasting to the design of stinger truss, connection mechanism design becomes more complicated for the unknown loads shared during the laying cases or the survival case of the barge. In this paper a set of analytical approach for connection mechanism design are proposed and demonstrated for specific operating conditions. In this approach, structural response analysis were carried out firstly using a beam-element truss model to which pipelay functional loads, environmental loads and inertia loads had been applied and the loads undertook by stinger connections were extracted. Next other connection models constructed by cell grids were enabled to predict the responses of connections under those loads extracted from the analysis results of the first step. The analysis example of this paper confirms that based on this approach more careful strength or fatigue check had been realized for the connections of fixed stinger.
The Deep Beam Bending of Rectangular Section under Concentrated Load
Authors: Chen Ying Jie
Published: August 2013

In this paper the application of reactive reciprocal method is used to solve the concentrated load rectangular section of the deep beam bending problem. The deep beams new equation of bent rectangular section is not only the use of the power of reciprocal method is used to solve the deep bending beam one of the innovation points, also abounded beam theory. Through numerical calculation, the calculate method of this paper is correct.
Magnetoelastic Effect Analysis of a Thin Current-Carrying Plate in an Invariable Magnetic Field
Authors: Bian Yu Hong
Published: August 2013

In this paper, the nonlinear magnetoelastic kinetic equations and the electrodynamics equations of a thin current-carrying plate under the action of a coupled field are given. Using the difference and quasi-linearization methods, the nonlinear magnetoelastic equations are reduced to a sequence of quasilinear differential equations, which can be solved by the discrete-orthogonalization method. The stresses and deformations in a thin current-carrying plate under the interaction of an electromagnetic field and mechanical load are calculated, and the magnetoelastic effect on the plate by the side electric current and magnetic induction intensity is studied. Numerical results show that the states of the strains and stresses in thin plates can be controlled by changing the electromagnetic parameters.
The Drive Axis Simulate Analysis on the Spiral Bevel Gear Milling Machine
Authors: Yu Li Juan , Li Xu Peng , Liu Fu You , Zheng Fei
Published: August 2013

The tool feed system main drive shaft of CNC spiral bevel gear milling machine is researched, and the vibration form of the drive shaft is confirmed.The main drive shaft is simplified using the lumped parameter method, the lumped mass model and the force model were been obtained. When bending vibrating, the natural frequency of the main drive shaft is calculated using the transfer matrix method. In order to verify the correctness of the calculations, the vibration of the main drive shaft is simulated by using ANSYS. This paper also designs the vibration control system for the main drive shaft, and analyzes influence factors which affects the vibration of the main drive shaft.
Tooth Contact Analysis of Parabolic Gears with New Type of Profile
Authors: Zhang Shu Yan , Guo Hui
Published: August 2013

The meshing principle of a new kind of parabolic gear is introduced, and the tooth surface equations of parabolic gear are obtained. A tooth contact analysis to simulate meshing and contact is applied. The paper investigates the influence of misalignment on transmission errors and shift of bearing contact. Examples to illustrate the developed approaches are proposed. The research provides the basis for design of new high strength parabolic gears.
Analysis of Gear Static Transmission Error and Mesh Stiffness
Authors: Yin Jiao
Published: August 2013

In this paper, the object of study is one pair increasing gear with building a two-dimensional plane model in ANSYS. According to the gears meshing theory, considering the gear deformation, solve the static transmission error and the gear mesh stiffness in different conditions. The influence of the centre errors on static transmission error and mesh Stiffness are basis for modal analysis based on the mesh stiffness of gear and unbalanced harmonic response.
Static Characteristics of Micro Disc Magneto Electric Generator – Simulation and Experiment
Authors: Du Lin , Shi Geng Chen , Zhao Jing Jing
Published: August 2013

Maxwell 3D software of finite-element analysis in electromagnetic fields is used to model and simulate the micro disc magneto electric generator. Distribution characteristics of magnetic induction are required and theoretical analysis and calculation is presented. Error between the simulation result and experimental result is about 6% which verify the rationality and accuracy of finite-element simulation. It can be used to guide the structural design and optimization of this type of generator.