bluuebunny/crossref_metadata_2025 huggingface dataset:
The Design of Drug Circulation Quality and Safety Control System Based on the Internet of Things
Authors: Wei Hua , Wang Feng Zhou , Huang Chuan Hua
Published: March 2013

This paper analyzes the main management problems in drug circulation quality among pharmaceutical wholesale enterprises, and provides the construction strategy for a comprehensive quality safety control system of medicine circulation from a macro perspective. Based on the characteristics and function requirements of drug circulation management, it depicts structure model of the system, which includes three parts: sub-system of production management, perception management, and the regulatory decision-making. This paper mainly illustrates the design and research idea of the sub-system of sensor network and multi sensor management to meet the demand for the drug monitoring in circulation among pharmaceutical wholesale enterprises, that is early monitoring and warning in advance, rapid response and post evaluation and summary. The research results herein can offer beneficial reference in the further development for the system.
Service Life Study of the Artificial Knee-Joints of Crossed Pairing
Authors: Liu Li , Wei Lin , Yu Meng
Published: March 2013

The stress relationship between the artifical knee-joints of the same pairing and crossed pairing was studied by the contrastive contact analysis of finite element simulation in different angles and conditions. The service lives of the artifical knee-joints of different pairing were studied based on the above result and Archard wear design calculation theory to expand the application of existing artificial knee-joints. The result shows that, the maximal contact stresses of the artifical knee-joints of crossed pairing are more than those of the artifical knee-joints of the same pairing, and the more different pairing types are, the more obvious stress growths are. The service life of the artifical knee-joint of 3/3 pairing is 28.42 years, and the service lives of 3/2.5 pairing and 3/4 pairing are 27.08 years and 25.76 years respectively.
Extraction of Fish Oil from the Muscle of Sturgeon Using Supercritical Fluids
Authors: Hao Shu Xian , Huang Hui , Li Lai Hao , Yang Xian Qing , Cen Jian Wei , Lin Wan Ling , Wei Ya
Published: March 2013

This study evaluated the extraction of oil from sturgeon (Acipenser baeri) muscle using supercritical fluids. Response surface methodology (RSM) was used to identify and quantify the variables, namely extraction pressure, extraction time and CO2 flow rate on the yield of oil. Statistical analysis indicated that for all three variables, the quadratic terms and interactions between the variables had significant effects on yield (p < 0.05). Polynomial regression model predictions were in good agreement with the experimental results, with a coefficient of determination of 0.9936 for yield. Maximum yield from sturgeon muscle was 26.83% with a pressure of 315.8 bar, extraction time of 10.8 min and CO2 flow rate of 3.5 l/min, which closely matched the predicted value (26.70%). The characteristics of the fish oil extracted with the supercritical fluids were superior to those of oil obtained by other methods.
The Relationship Model of Light Interception and Plant Cultivation Form
Authors: Shi Heng Hua , Wang Yu Jie , Guo Cheng Kui , Zhang Yan , Wu Jia Xin
Published: March 2013

Plant light interceptions directly impact on plant photosynthesis, and thus have an impact on plant growth. According to the characteristics of plant photosynthesis and growth and development, we abstract plant growth form as the geometry. Based on solar elevation angle, solar azimuth angle and spacing of plant cultivation, we get the relationship model of plant light interception and planting cultivation form under assumptions. In the simulation environment, we set spindle trees as an example and analyze the best cultivation form of plants under the conditions of the specific latitude.
Experimental Study on the Slagging Characteristics of Biomass Briquette Combustion Equipment
Authors: Liu Sheng Yong , Xiang Guang Shuai , Li Wen Ya , Su Cha Jie , Wen Bao Hui , Zhu Chang He
Published: March 2013

By using double-grate biomass briquette combustion equipment, the article carried out the experiments which are the excess air coefficient、 the furnace-tank temperature、 the diameter of fuel 、the thickness of fuel and the operating level influence upon the slagging rate. Then, we found the slagging characteristics of biomass briquette combustion equipment, According to test and investigations, we concluded that the slagging rate of burning double-grate biomass briquette combustion equipment is only about 3% in the best condition; the combustion equipment has low slagging character. Then the author analyzed the slagging process and its influential factors of biomass briquetting combustion. further, the author concluded slag’s form and causes of biomass briquette combustion equipment and we provide a scientific basis for reasonable combustion control、 security and economic combustion.
A Study into Green Package Design Practice
Authors: Zhang Jing
Published: March 2013

Sustainable development has become the key strategy in global economic development. Green package which plays a crucial role in developing low carbon economy, contributes a lot to sustainable development. Based on the principles of green package design—reduce , reuse, recycle and degradable, this paper is devoted to provide some suggestions on the practice of green package design from the following three perspectives: develop new technology to innovate product packaging terminal, adopt traditional Chinese packaging principles to promote Chinese green package design and adjust design idea to include package recycling design.
Design and Applications of LED in Chinese Knots
Authors: Shih Ju Yi , Lai Shu Ling , Cheng Huai Tzu
Published: March 2013

The craft industry is a part of culture and creative industries, and the Chinese knot is one of ancient handicraft products in China. Noted that the Chinese knot contains the quintessence of China's thousands of years of history and culture. If a new and creative idea can be input to the traditional design of Chinese knots, it may create a new appearance and life of these knots. This paper intends to add an element of new technology into traditional Chinese knots. The object is use of LED lighting to reshape the style and the value of Chinese knots. Both new design concepts and methods of Chinese knots with LED lighting have been proposed and implemented to stimulate the creativity of design and the development of products.
Design Process and Printability of Cigarette Packaging Materials
Authors: Sun A Qiang
Published: March 2013

The cigarette packaging material is an important material, a thin flexible, fibrous web consisting of cellulose fibers deposited upon each other, randomly oriented in the plane of the packaging materials. The coating layer properties have a connection to print quality via the ink absorption speed and volume capacity. Too slow speed at the coating materials surface means that the colorants have more time to mix together and bleeding problems are more visible. This paper studies the design of cigarette packaging materials as well as its printability.
The Structural Design and Experimental Research of Multi-Level Cushioning Packaging Storage Box
Authors: Hu Ming Xi , Liu Sheng Jun , Zhang Yan Jun , Du Zhen Jie , Tian Feng , Yang Jian , Gao Wan Yu
Published: March 2013

Aiming at the damage of package caused by emergency rescue and other severe transportation environment, a multi-level cushioning packaging storage box is proposed in this paper, the precise instrument is fixed in the box, which achieves the box-instrument integration. At the moment when air-dropped box touches the ground, the impact force is absorbed and cushioned through plastic cork base, rubber absorber, box body, steel wire rope spring, hydraulic damper for five times, which could provide effective cushion protection for the precise instrument which fragility value is not less than 15G. Simulation airdrop tests are performed to the storage box with different cushion levels, and the test shows that the result of five-level cushion method proposed in the paper is the best, and overload values are all within 12G, which could provide enough cushion space for precise instrument to avoid touchdown damage.
Study on the Needs of Religious Mobile Application Software for the University Christian Student Group
Authors: Zhu Shang Shang , Yu Qiu Lu
Published: March 2013

Start from the university student group that believes in Christianity, this paper conducts research on the needs of this special group in the field of mobile applications. Follow the user-centered design method, this paper investigates the special needs on the religious belief of this special group and using situation of mobile application software, explores user demands, applies the kano model to conduct attribute matching for the needs of users, and analyzes with weight so as to obtain priority ranking of the needs and provide design reference for the development of mobile application software for the Christ crowd.
Research on the Application of Advanced Surface Based on AliasStudio
Authors: Xiong Man Chen , Jiang Yi Heng
Published: March 2013

Through the CV(Control Vertices), NURBS curves, NURBS surface and the shell to research the principles of AliasStudio. And at the end of the article, describing the characteristics of advanced surface design of AliasStudio.
Exploration in the Curriculum and Teaching Based Cultivation of Innovation Capabilities for Graduate Students
Authors: Zhang Xiao Gui , Du Yan Ping
Published: March 2013

Cultivation of innovation capabilities not only is the top priority in the training and education of graduate students, but also a fundamental objective of the teaching curriculum for graduate students. Based on the practice of graduate education and training as a starting point, and combined with the author’s own teaching experience and understanding, this paper conducts a preliminary analysis and exploration on the ways and means of cultivation of innovation capabilities for graduate students.
Research and Application on Engineering Cases Based Three Stages Teaching Methodology
Authors: Lu Bi Hong , Li Yu Kai
Published: March 2013

An engineering case based three stages teaching mode is presented by issue bring forward, question analyzes and problem solve. From the perspectives of teaching through case, constructivism, cognition psychology, authors analyzed the function of teaching mode in cognition process mode and its control rules, emotion stimulating, and knowledge constructing as well. With the help of teacher in implementation of case design and class organization in Modern Quality Engineering(MQE) teaching, the three stages teaching mode has shown a significant effect on approaching to the objectives of education and teaching in inspiring students to learn and apply knowledge, as well as develop their ability initiatively. The three stages teaching methodology can be used as a helpful reference for young teachers in teaching effect improvement further.
Application of Learning Project Instruction Method in Biochemistry Teaching for Municipal Engineering Graduate
Authors: Liu Xiao , Wang Wei Jie , Chang Li Xin , Pan Yu Xin , Jia Chang Hong
Published: March 2013

Learning project instruction is a newly developed teaching method, which can help students to confirm the learning goals and knowledge points, stimulate their interest and autodidactic potential thus enhance the teaching effect. This work proposed the application of the method in biochemistry teaching of municipal engineering graduate.
Research on Establishment of Practical Teaching Platform for Welding Specialty
Authors: Zhao Kang Pei
Published: March 2013

As a key content, practical teaching plays an important role in improving the personnel training in universities. In this paper, we take Shandong Jiaotong University (SDJTU) for example and introduce the establishment of the practical teaching for the welding specialty. The course system, teaching method and cultivation ability training are discussed. The practice in SDJTU can provide guidance for improving the practical teaching quality for welding specialty.
Analysis of Deformation of Reflector for RF-Excited CO2 Laser
Authors: Zhang Yan , An Wei Ke , Zhou Yong , Tan Jing Yin
Published: March 2013

The paper aims to study the deformation and compensation of the reflector for RF-excited diffusion-cooled CO2 laser. Based on ANSYS, the thermal deformation and compensation of the reflector have been calculated, It has been proved that the effect of temperature compensation is obvious, and can correct the thermal deformation of the reflector to the tolerance of the parameter of optical cavity.
Research on Talent Training Mode Reform of Material Forming and Control Engineering Major
Authors: Wu Cheng Ge , Li Wei , Zhao Kang Pei , Fang Qiang Han , Jing Yan
Published: March 2013

In the new century, the new technology and new knowledge is faced to the world that has been developing fast. Based on the result of widely investigating and collecting data, we have a new understanding to the industry of natural monopoly. The modern engineering education of Material Forming and Control Engineering Major has seen great reforms,and progress in research achievements in educational thoughts, training program, curriculum and practice teaching in this paper.
Study on Block Structure Optimization of Single Degree of Freedom Crankshaft Fillet Rolling Machine
Authors: Han Shao Jun , Chen Chao , Li Xiong
Published: March 2013

Made a static analysis of the SDOF rolling arm of the crankshaft rolling mechanism by using ANSYS finite element analysis software, obtained stress distribution and deformation of the rolling arm in clamping condition, then optimized the size of the rolling arm. Achieve the purpose of reducing the weight of the rolling arm,within the yield limit of the material.
Rebar Futures Basis Characteristics and Analysis of its Effect on Hedging
Authors: Liu Hong , Wu Shuang Sheng
Published: March 2013

the China rebar futures contract position substantially transfer cross period, and basis is often larger and has large volatility, It has great effect on the hedging, and result in larger basis risk. This paper uses data from futures and spot market, on the positions and the basis for empirical analysis, and explores the regular pattern of changes in the position and basis. On this basis, it analyzes the traditional hedging risk with simulation, and estimates the optimal hedge ratios.
The Contribution Analysis of Science and Technology Service Industry of Liaoning to Manufacturing Industry - Based on Clustering Analysis on Direct Consumption Coefficient
Authors: Zhang Zhan , Lu Qi , Gang Yi
Published: March 2013

As a great heavy industry province, Liaoning manufacturing industry plays a pivotal role in terms of the Social Economic Development. During the Twelfth Five-Year Plan period, How to promote the Positive Interaction between the Science and Technology Service Industry and manufacturing industry and realize the integration between industrialization and Information Technology is a significant historical task the Liaoning need to resolve. Based on the direct consumption coefficient, using the clustering analysis technology .his paper discusses the contribution of Science and Technology Service Industry to manufacturing industry and improvement space for providing advice in promoting the technical Transformation of manufacturing industry, optimizing Industrial Structure and realizing economic transitional development .
Repair Purchase Intention in Product Harm Crisis
Authors: Liu Zong Jin , Yang Yang , Fang Zheng , Cai Jing
Published: March 2013

Because of defective manufacturing processes and systems, product harm crises are likely to occur more often recently. Product harm crisis is likely to affect specific attribute- or non-attribute-based brand associations. It has been confirmed that exposure of product harm crisis weakens consumers’ satisfaction, purchase intention, and evaluation of the corporation as well as brand equity. Response strategy is of key importance to alleviate damage caused by product harm crisis. To resolve product harm crisis, manger should select the appropriate response strategy according to seriousness of product harm crisis. This paper suggested that managers should use a combination of response strategies for product harm crisis, according to the empirical findings based on defective manufacturing processes and systems.
The Impact Factors Analysis of the Continuous Safety of the Yangtze River Shipping
Authors: Wang Lu , Liu Qing , Xu Kai Jin , Xu Xiao Li
Published: March 2013

This paper aims to analyze factors affect the continuous safety of the Yangtze River shipping, it studied the connotation and feature of continuous safety, and based on which selecting safety input, human behavior, safety management, safety state, safety culture as the main impact aspects, using the gray relational analysis to extract the key impact factors belong to the abovementioned five aspects. The result shows that safety management, safety input and safety state have bigger impact on sustainable safety state and continuous improvement of system safety standards.
Manufacturing Industries Transfer Trend in China 1999 - 2010
Authors: Jiang Lin , Dou Wei , Pan Ya Qiong
Published: March 2013

Construction of the regional industrial competitiveness coefficient model to measure and evaluate the dynamic trend of industrial transfer between the manufacturing industries of the eastern, central and western regions since its formal implementation of the western development strategy in 1999, China, the results show that from 2000 to 2010 the absolute superiority of the eastern part of the manufacturing sector is still obvious, even to expand, and the East Midwest gap has not narrowed, as well as the expansion of large-scale industrial transfer and did not happen.
Principal Factor Analysis for Main Raw Materials’ Transformation Efficiency in Iron-Making Systems
Authors: Wang Yan Hong , Zhang Hua , Jiang Zhi Gang , Zhao Gang
Published: March 2013

The transformation efficiency of main raw materials in iron-making systems is influenced by many factors. Principal factor should be selected to describe the relationship between the transformation efficiency and the Influencing factors. A principal factor analysis model based on Grey Correlation Analysis (GCA) is proposed in this paper. The model is employed to process blast furnace production data and determining the principal factor which is the research base of mathematical model of the transformation efficiency of main raw materials.
Kinematics Simulation of Mechanical Arm of Hot Extruding and Upsetting Machine Based on ADAMS
Authors: Ou Li Wei , Wu Hai Tao , Liu Hong Bin
Published: March 2013

A mechanical arm of hot extruding and upsetting machine 3D model was established by using SolidWorks and imported into ADAMS. The mechanical arm was simulated in ADAMS and the simulation results showed that the model of mechanical arm could meet all the design requirements well, and the kinematics simulation results could offer the references to design the mechanical arm of hot extruding and upsetting machine.
Study on Remanufacture Based on Customer’s Environment Preference
Authors: Lu Yao , Zhu Wei , Xu Ke Lin
Published: March 2013

The influences of the consumer’ preferences on the remanufacture are studied and coordination issue about the ration of remanufacture is addressed. The conclusions show that the level of re-manufacturing will be higher when more of the consumers are environmentalists. In addition, when the environmentalists’ preferences are stronger, the optimal level of remanufacture is higher. In the supply chain context, the manufacturer's optimal remanufacturing level is less than that of the entire supply chain. In this situation, retailers can use a kind of environmental subsidies to entice the manufacturer and then achieve supply chain coordination.
Research on Models of Technology Innovation Systemic Risk and Early Warning of Materials and Manufacturing in SMEs
Authors: Gao Ming Shi , Wu Yong , Zhao Chen
Published: March 2013

The prime task for limiting SMEs’ technology innovation systemic risks in materials and manufacturing is to exactly measure and warn the systemic risks.Before the SMEs’ technology innovation crisis in materials and manufacturing ,most of the research focused on how the macro economy shocked the l system,while few of them were interested in the correlation between and among different sectors and markets.This article tried to analyze the latest development of systemic risk measuring method based on the data the models needed,especially for the correlation measurement.
Manufacturing Technology for a New Type of Profiled Rotor
Authors: Băran Nicolae , Besnea Daniel , Sima Teodor , Detzortzis Antonio , Cărnaru Stelian Cosmin
Published: March 2013

The paper presents the sketch and the functioning principle of the rotating volumetric pump. The paper presents a mathematical model that establishes the coordinates (xi, yi) of the outline of a profiled rotor. A software that computes these coordinates is developed for a series of rotor dimensions. Based on these coordinates, the 3D model of the rotor is built using the software package CATIA V5. An appropriate post-processor generates a NC Code program written in ISO language, in order to manufacture the rotor on a vertical CNC center. Finally, the operation sheet regarding the design and manufacturing of the profiled rotor is presented. The demonstration model of the profiled rotor will integrate the construction of a rotating volumetric pump.
Regional Logistics Information Platform User Growth Research Based on System Dynamics
Authors: Chen Jia Juan , Su Zeng Rong , Zhang Song Bo
Published: March 2013

The paper analyzes the main factors affecting logistics information platform’s user growth based on system dynamics theory and predicts the user number in the next few years taking a Zhejiang logistics platform as an example. The research supposes the growth is divided into users gather period and stable operation period. At last, the paper gives the influencing rule of service pricing and attractive coefficient on user growth.
Large-Scale Mechanical and Electrical Equipment Installation Project Management Research
Authors: Zhang Bai Jun
Published: March 2013

The mechanical and electrical installation is a broad concept, involving a wide range, subjects span, although its inherent characteristics, but its versatility is also very strong. Only by grasping the electrical and mechanical installation of construction technology and quality management, in order to increase enterprise efficiency, and improve the competitiveness of enterprises. This paper analyzes the characteristics of the mechanical and electrical installation projects, pointing out that the idea of the mechanical and electrical installation project management, summed up the connotation of the mechanical and electrical installation project management, and has some theoretical guiding significance for the further improve the management of mechanical and electrical installation projects. Electrical and mechanical installation is an important part of the construction work, covering the various types of equipment in industrial, residential, public works, the installation of electrical, water supply and drainage, heating, ventilation, fire, communications and automation control systems. Mechanical and electrical installation works activities covering equipment procurement, installation, commissioning, trial operation, the various stages of completion and acceptance, and ultimately use of the building function is to meet the goal.
The Second Methode to Explore the Boat Schedule of Big Long River
Authors: Jiang Jun Na , Zhang Qiu Na , Wang Hong
Published: March 2013

In this paper we focus on the contact problem. We have proposed two schedules to minimize the contact and ensure that the sites where the boats that are launched on the same day and of the same duration are next to each other.Under the circumstances that there is no contact between boats launched on the same day, we’ve worked out the interval time between the two groups of boats (there is no other group in between). By following the exact time interval, suppose one of the boats of each duration, either motorized or oar-powered are launched, we work out the carrying capacity is 154. Therefore, campsites should be no less than 154. In addition, the total trips in 6 months are 2006.
Medium Voltage Distribution Network Planning of City Based on Reliability
Authors: Jia Yu Wei , Ding Wang , Huang Jia Dong
Published: March 2013

Power network planning is an important foundation of the development of the grid, its planning level and quality directly affects the security, reliability, and economic level of the power grid. This article will carry on the analysis according to the reliable condition to the city distribution network, mainly includes the structure of the urban network wiring, the form of the host wiring and medium voltage distribution network wiring and so on.
The Mathematical Discription and Model Study of System Reliability
Authors: Li Zhong , Wang Gao , Bo Yu Cheng
Published: March 2013

As science and technology advancing rapidly, techniques of modern production are increasingly automatic. Accordingly, only the product with high relisbility can meet the demands of modern scinence, technology and production, can be more competent and yield better economic returns. The paper, starting from the basic concepts of system reliability, makes a research on mathematical description and reliability model of it.
Mechanism Motion Analysis and Hydraulic Buffer Equipment Design Based on COSMOSMotion
Authors: Ma Bei Yi , Wang Feng Hui , Cheng Yao
Published: March 2013

Virtual simulation of the tumbling machine for huge cylindrical segment was done in the design process with COSMOSMotion module of Solidworks software. This machine could rotate from 0 to 180°. Within 0°to 53°, the rotation was driven by traction equipment. From 53°to 180°,the rotation was driven by dead-weight of the machine. Hydraulic buffer equipment and 4 rubber buffer beams were used to reduce the impact force between the tumbling table and the base. The simulation analysis shows that the structure design was reasonable and the buffer function was fine, too.
Buffer Analysis of Multifunction Office Chair Based on ADAMS and ANSYS
Authors: Jiang Bo , Wu Hai Tao , Liu Hong Bin , Liu Hai Tao
Published: March 2013

The 3D model of a multi-functional office chair is completed by SolidWorks and imported into ADAMS. On this basis, we establish damping rubber model by ANSYS and import it into ADAMS through the interface between ADAMS and ANSYS. In this way, the damping rubber is added to dynamics simulation of the chair. The simulation results show that the damping rubber model established by ANSYS can bring perfect damping effects between the gear and base when the rubber is used in the chair. The results also show that the design of the multi-functional office chair can fully meet the requirements.
Kneading Mixer Paddles Parameterized Modeling
Authors: Jin Xiao Li , Jing Ling , Ma Bao Ji
Published: March 2013

To prepare for the Kneading Mixer paddles structure optimization,five independent parameters were selected to establish paddles, material pot diameter D, minimum clearance e, hollow paddle helix angle α2, and the angular velocity of two paddle ω1,ω2.Then establish geometric relationships and the constraints. And using pro / E software parameters-driven to achieve the parametric design of the complexity paddles.
The Design of Mechanical Arm of Hot Extruding and Upsetting Machine Based on SolidWorks
Authors: Wen Li Gang , Wu Hai Tao , Liu Hong Bin
Published: March 2013

This paper established a model of mechanical arm of hot extruding and upsetting machine. According to design requirements of mechanical arm of hot upsetting extruding machine, established the 3D model of parts and the parts assembly by using 3D modeling software SolidWorks. This design realizes cyclical movement of mechanical arm that 120° level rotation and up-downswing 15° by incomplete gear mechanism and cam mechanism, and verified the feasibility of designing the project by SolidWorks.
Parametric Design of Friction Plate Based on VB and Pro/E
Authors: Zhu Chun Dong , Tian Wei , Zhang Xuan , Yin Wei Fan
Published: March 2013

This paper introduces the secondary development of Pro/E with VB , established the parametric design software of friction plate which including part design module and quotation module. In parts design module user can input parts parameters for automatically model regeneration in Pro/E. Quotation module solved the common problems such as long time-consuming and inaccurate calculation, provided a more convenient, fast and practical tool for quoted price.
Research and Design of Small Displacement LPG Motorcycle Pressure Reducer
Authors: Li Cun Xia , Ji Rui Hai , Tuo Yang
Published: March 2013

In the analysis, comparison LPG motorcycles and on the basis of the similarities and differences of LPG vehicles, LPG motorcycle liquid positive-pressure fuel system, Which simplifies the structure of the vacuum evaporator; two decompression Design, to ensure a vacuum evaporatordecompression and regulator role; to install the solenoid valve at the exit of sewage outlets and to consider the installation directions, so that the structure and function of the vacuum evaporator to be optimized; matching tests show that the vacuum evaporator simple structure, reliable performanceto meet national standards.
Effect of Computer Color Matching System in Laboratory
Authors: Yang Hong Ying , Zhang Ge , Zhou Jin Li
Published: March 2013

Computer color matching technology has many advantages for coloration processes theoretically. However, in practice, many manufacturers would rather employ experienced color matching engineer with very high salary than buying computer color matching instrument. There are many reasons for this phenomenon. This paper checks the effect of Datacolor SF600 color measuring and matching system in laboratory. The experiment show that the color matching result is much better than that of a green hand person, but far from that being expected. The reasons are discussed and new theory is expected to be developed to give a fundamental solution.
Turbulence Numerical Simulation and Particle Track Analysis of Slurry Pump Impeller
Authors: Zhang Heng , Yin Yan Chao
Published: March 2013

In order to improve the pump wear performance and optimize pump design, the Euler-Lagrange approach is chosen to simulate the flow in the impeller. The fluid phase is treated as a continuum by solving the N-S equations, while the dispersed phase is solved by using Lagrange Method through the calculated flow field. The results show that the reflex appears in the blade inlet of pressure sides in high flow conditions, but appears in the blade inlet of suction sides in low flow conditions, which possibly induce the cavitation erosion. In low flow conditions, reflex and eddies appear in the blade outlet of both the pressure sides and the suction sides, and the reflex areas even extend to the middle of blades. In the range of simulated conditions, the suction sides don’t collide with particles. The pressure sides collide with particles in the form of continuous impact in low flow conditions but scratch in high flow conditions.
An Improved Reversible Watermarking Algorithm in Wavelet Domain for Two-Dimensional CAD Engineering Graphics
Authors: Tu Xiaoli , Jiang Xue Mei , Zhang Xiao Mei
Published: March 2013

With the development of digital design and processing and the explosive growth of the demand for two-dimensional CAD engineering graphics, more attention has been paid on the security and the copyright issues of engineering graphics. In this paper, an improved reversible watermarking algorithm in wavelet domain for two-dimensional CAD engineering graphics is proposed. Firstly, the watermark information is preprocessed by compound chaos sequence. And then, block the graphic and extract all vertexes in each blocks of the 2D CAD engineering graphics, Log-polar Mapping (LPM) and wavelet transform are done to them respectively to achieve the invariance of affine transform. Finally, the encrypted watermark is embedded into detailed coefficients by using improved quantization index modulation (IQIM) scheme. Compared with the original previous algorithm, theoretical analysis and experimental results show that the proposed algorithm has not only good visibility and good reversibility, but also stronger robust against the attacks such as transformation, rotation, equal scaling and entity deleting, tampering or adding etc.
Structural Design for Oil Well Pump with Soft Sealing and Small Diameter Piston
Authors: Yan Wen Hui , Gao Ping , Chen Yong
Published: March 2013

For the low pumping demand of daily production per well of low permeability oilfield, a diameter of 25mm soft sealing small diameter piston-type subsurface pump is designed, and an external traveling valve to ensure that the valve still application of standard parts is adopted, while reducing the pump barrel diameter. In order to solve the problems of pump leakage increasing with wear, automatically compensate for soft seal ring is adopted in piston design. The liquid pressure of the pump barrel is changed in the pump working process, so that the sealing ring is deformed outwardly. When the pump reaches the upper stroke, the gap between the pump barrel and the piston reduced, and further improve the sealing effect. The innovation of structure and the selection of new materials can reduce the difficulty of pump processing, as well as can extend the maintenance cycle. This paper introduces the overall structure and sealing characteristics of soft sealing small diameter piston-type subsurface pump. If the soft sealing small diameter piston-type subsurface pump and real-time variable frequence control technique of pumping unit combined, a more reasonable machine rod pump combination can be provided to achieve ultra-low permeability oilfield stripped well efficiently pumping.
Analysis of Mechanical Characteristics and Structural Optimization of the Impeller
Authors: Wang Na , Xu Guang Ming , Zhang Lian Yong , Liu Ke Ming
Published: March 2013

The impeller is the core component of ventilator, and its operation safety has a crucial influence on the unit reliability. To improve the safety of the impeller, 3D solid modeling of the impeller is made with Solid Works software and the static and dynamic strength characteristics of it is calculated with ANSYS software in the paper. The results show that the contact edge round between the blade and the wheel cover can effectively relief the stress concentration and reduce the maximum stress of the impeller.
The Analysis of Power Performance for Small H-Vertical Axis Wind Turbine
Authors: Liu Ran Hui
Published: March 2013

This paper mainly aims to get rotor aerodynamic performance curve and has studied the matching between the rotor and generator based on the numerical simulation method of the computational fluid dynamics, using the finite volume method to calculate the pneumatic performance of H-type wind power generator, so as to provide guidance for the power control of the small h-vertical axis wind turbine.
Virtual Design and Structural Optimization of Hydraulic Support Based on Pro/E Software
Authors: Chen Ming Fei , Xu Guang Ming , Zhang Lian Yong , Liu Ke Ming
Published: March 2013

Based on 3D solid modeling and assembling, the motion simulation of the whole hydraulic support is performed with Pro/E software and the accuracy and reasonableness of their actions and designs are tested. According to the static and dynamic analysis of hydraulic support with Pro/E software, the structure of hydraulic support is optimized.
Collaborative Optimization of Excavator Boom Mechanism Parameters under Multiple Loading Conditions
Authors: Yin Guang Qiu , Zheng Shu He , Lin Shu Wen
Published: March 2013

On the base of explaining Multi-Objective Optimization Problems (MOOP) and Collaborative Optimization Techniques (COT), this paper puts forward an original and efficient approach—Collaborative Optimization Technique for Multi-Objective Optimization Problems (COTMOOP)—which combines Collaborative Optimization (CO) techniques and Evolutionary Algorithms (EAs). It has been developed so as to facilitate the organizations and increase the performances of complex coupling systems design and optimization. The newly method has been succeeded in applying to the design and optimization of excavator boom mechanism that is a complex coupling system. The optimal solutions can prove that the approach is efficient and practical.
Dynamic Modeling and Analysis of Underactuated Prosthetic Hand
Authors: Tang Liang , Zhang Yi , Deng Hua
Published: March 2013

Based on the kinematic equation of index finger, the trajectory space of fingertip is analyzed, and the structural parameters of underactuated prosthetic hand have been optimized by ADAMS, which compare the trajectory space with the index-finger. Using the modeling methods of Lagrange dynamics equation, the dynamic model is established for the three-joint underactuated prosthetic finger, whose kinematic and dynamic characteristics also are analyzed. Finally, by the construction of the virtual prototype and its introduction into ADAMS for the dynamics simulation, the correctness of kinematics and dynamics model is verified by the dynamics simulation of virtual prototype.
Analysis and Simulation for Balance of Rigid Rotors Based on ADAMS
Authors: Liu Zuo Shi , Wei Yi Guo
Published: March 2013

Conventional models for mechanical rotors based on Automatic Dynamic Analysis of Mechanical Systems (ADAMS) are over-constraint. This paper proposes a new method for simulating the stiffness and damping of bearings using bushing and other kinematic pairs. Analysis and Simulation for balance of rigid rotors by ADAMS were performed. To reduce the imbalance inertial force, the balance weight of a take-up machine has been optimized. The results were verified by the prototype test. Our results suggest a more effective method for balance of mechanical rotors in the design stage.
The Virtual Prototype Modeling Research of a Wind Tunnel Test Platform with Member Flexibility
Authors: Zhao Lan Lei , Chen Wen Jia , Shi Li Jun , Li Lu Yang , He Yan Zhong
Published: March 2013

The rigid-flexible hybrid modeling of the wind tunnel test platform is established by means of ANSYS and ADAMS for more accurate analysis of the motion performance of the test platform in this paper. We get the kinematical characteristic curve based on the three working conditions of the pitching motion, yawing motion, rolling motion of the test platform. According to the characteristic curve indirectly reflects the rationality of the design configuration. So as to provide fundamental basis for the precision dynamics simulation analysis and make the real physical prototype are offered.
Effect of Different Air Content on Cavitation with Ultrasonic Treatment
Authors: Kang Jin Wu , Hu Yi Sen , Ma Ji Yu , Huang Tian You
Published: March 2013

Ultrasonic treatment is a hot research topic in the treatment of the melt of metals. Numerical simulation is a useful method to unveil the principles of ultrasonic treatment. In this paper, the Novier-Stoke equations and the cavitation model are coupled to simulate the cavitation during ultrasonic treatment by using Fluent. It is found that as the nucleation site volume fraction increases to a certain degree, there will be a bubble layer surrounding the amplitude transformer, which insulates the effect of ultrasound beyond the bubble blanket. Experiment was carried out, and the simulated results were validated. And the effect of nucleation site volume fraction in water is investigated. The nucleation site volume fraction should be controlled into a certain range to realize uniform cavitation.
Research on Numerical Computing Platform of Centrifugal Fan Based on Parameterization
Authors: Zhang Lei , Wang Song Ling , Hu Chen Xing , Liang Shou Fang
Published: March 2013

It is of great importance of studying the influence of structural parameters on centrifugal fan performance. Considering the structural characteristics, parametric numerical simulation platform was developed based on parameterization and VB software. The platform includes fast automatic modeling, numerical simulation and post processing modules, which can be used to research the variation of performance parameters and flow fields when structural parameters of centrifugal fan changes and provide basis for design and optimization. The influence of blade numbers on total pressure of centrifugal fan was studied as an example to validate the feasibility and practicability of simulation platform.
Based on ANSYS APDL Language Moving Blade Adjustable Axial Flow Fan Optimization Design
Authors: Niu Dong Xia , Meng Xian Yi , Zhu Ai Hua
Published: March 2013

In the case of multiple loading conditions, a moving blade adjustable axial flow fan structure parameters are optimized by ANSYS. It is to achieve greater efficiency and less noise for the optimization goal. For different conditions, establish efficiency, noise comprehensive objective function using weighted coefficient method. Select impeller diameter, the wheel hub ratio, leaf number, lift coefficient, speed as design variables, Choose blade installation Angle, the wheel hub place dynamic load coefficient, cascade consistency, allowable safety coefficient as optimization of the state variables. Design variables contain continuous variables and discrete variable. Through the optimization method, we get the optimal structure parameters finally. And at the same time get the corresponding optimal blade installation Angle,under different working conditions.
CFD Simulation on Flow Distribution in Plate-Fin Heat Exchangers
Authors: Zhang Zhe , Tian Jin Jin , Guo Yong Gang
Published: March 2013

The influences of the conventional header configuration used in industry at present on the fluid flow distribution in plate-fin heat exchanger were numerically investigated. The numerical results showed that the fluid flow maldistribution is very serious in the heat exchanger. The header configuration with perforated plate was brought forward for the first time. The computational results indicated that the improved header configuration can effectively improve the performance of fluid flow distribution in the heat exchanger. The fluid flow distribution for the header configuration with curving perforated plate is more uniform than for the header configuration with plane perforated plate. The absolute degree of fluid flow nonuniformity in plate-fin heat exchanger has reduced from 3.47 to 0.32 by changing the header configuration. The numerical results are compared with the experimental results. They are basically consistent which indicates that the mathematical model and the calculating method are reliable.
Numerical Simulation of the Performance of Gas Turbine Combustor
Authors: Liu Kai
Published: March 2013

Numerical simulation of the performance of QD128 gas turbine combustor was finished using CFD method. The results indicate: The flow meter distribution of combustor is reasonable, and the velocity field of combustor meets the design requirements. Outlet average temperature is 1298K, hot spot temperature is 1486K, the temperature distribution curve meets the design requirements, and OTDF=0.280，RTDF=0.086，which are slightly higher than the level of prototype aircrafts. The results enrich the design data of QD128 gas turbine, and provide reliable reference for the running and improving.
Research on Impeller Blade Style of Stamping and Welding Multistage Centrifugal Pump
Authors: Ding Jue Xin , Zheng Shui Hua
Published: March 2013

Impact of vane curve on hydraulic performance of the DQ100-64-22 stamping pump was researched by CFD simulation and experiments. The research results show that processing fillet at the connecting section of space blade and shafts only generates minor influence on the pump performance，but it can decrease incidence losses of the inlet flow. The cylindrical blade type has great influence on both inner flow field and hydraulic performance of pump in the high flow rate conditions. The research can supply a good support for the vane curve design and manufacture of stamping and welding multistage centrifugal pumps.
Torque Pulsation Minimization of Permanent Magnet Synchronous Motor Using the Taguchi Method
Authors: Fan Jian Jian , Wu Jian Hua
Published: March 2013

The torque pulsation was minimized using the Taguchi methods in this paper. The analytical model of torque was derived by the energy method. The Taguchi optimization method was used to generate the experiment samples, which were calculated in 2-D and 3-D FEA. Three different parameters of PMSM, such as skew ratio, pole embrace and stator slot width were optimized. ANOVA was used to analysis the effect of different factors in Taguchi method. The superiority of the optimized PMSM was also verified further through FEA.
Model and Simulation for Two-Axis Vibration Isolator
Authors: Zhang Yong Liang , Guo Bai Wei , Meng Xiu Yun
Published: March 2013

The satellite platform in the orbit, as the payload carrier, always suffers from the complex spatial dynamics disturbances. The disturbances affect the LOS stabilization of the high resolution optical payload and then affect the quality of the image from the high resolution earth observation system. In order to solve the problem, the vibration isolation technique-placing the appropriate vibration isolators between the vibration source and system to isolate the direct transmission of the vibration is adopted. In the paper, we take the two-axis isolator as the object of study, build its dynamic model and design the controller for the two-axis isolator. We use ADAMS which is used for the mechanical dynamics and MATLAB to do the combined simulation to verify the controller’s effects.
Numerical Analysis for the Stability of Cylinder Gas Film Seal
Authors: Ma Gang , He Jun , Shen Xin Min
Published: March 2013

Non-contacting gas film seal applies to the high speed working condition and a numerical method was presented for analyzing the effect of speed on the stability of cylinder gas film seal. The dynamics analysis model was established, solving the time-dependent Reynolds equation coupling with the dynamic equations. Through numerical simulation, the critical speed of cylinder gas film seal system and the diagram of critical mass versus rotor speed were obtained. The influence of the speed on dynamic stability was studied. The results show that the system stability becomes worse as rotor speed increases.
Analysis about the Influence of Load on Loss of the Ceramic Spindle
Authors: Zhang Li Xiu , Xu Meng Yuan , Wu Yu Hou , Xia Wan Lei
Published: March 2013

The increase of loss causes the temperature rise in motor, reducing the using life of spindle, which can seriously affect the performance of motor. Thus, accurate calculating of loss is meaningful to optimal design of electric spindle. In this paper, the losses both with load and without load were analyzed by time-step finite element method. As the result of simulation analysis, the spindle losses with load are higher than those without load. Comparison analysis indicates that losses are various with different load. And the load impacts on core loss mostly in ceramic spindle. In addition, in asynchronous ceramic spindle with 4N•m rated load, the core loss, solid loss and stranded loss are least when the load change from 1.8 N•m to 3.8N•m. Accordingly, the best operation condition under the influence of load in electric spindle is gained.