bluuebunny/crossref_metadata_2025 huggingface dataset:
The Development of Computing System with Equivalent Beam Element Based on Matlab Software
Authors: Zhang Guo Zhi , Zhou Ning
Published: February 2012

The computing method of series traction mechanism of heavy machinery was studied. The scheme of its computing system with equivalent beam element was proposed. Based on this scheme, combining with secondary development of language of Matlab, the computing system was developed. Through comparing with the reslut of enity element with ANSYS, the computing system was verified. Beacause of the computing system developed, the computating efficiency is improved and the accuracy is ensured.
Research on Vibration Characteristics of the Pedestal and Equipment Systems with Variable Parameter
Authors: Chen Hai Long , Qiu Zhong Hui , Pang Fu Zhen , Zheng Lv
Published: February 2012

According to the relation between exciting force and the pretightening force, the parameter of pedestal and equipment systems can be variable or invariable. The differential equation for forced vibration problem of the system has been established. The condition whether piecewise linear vibration will happen has been found. The result shows that the system will appear multi-frequency vibration response on the condition of single-frequency turbulence force. The results in this paper can be applied to the installation of the equipment.
Analysis of Propulsion Shafting Torsional Vibration of Vessels with Double Engines and Double Propellers
Authors: Wen Xiao Fei , Yuan Qiang , Lu Jin Shu , Cui Zhen Dong
Published: February 2012

The powerful propulsion system of vessels with double engines and double propellers is commonly used for harbor utility crafts, offshore platform supply vessels and etc.. Their shafting torsional vibration evaluation methods differ from those of one-engine vessels, so it is necessary to use appropriate methods to get scientific evaluation results of the two kinds of shafting. For vessels with double engines and double propellers, the shafting torsional vibration is calculated theoretically by specialized calculation software; a practical scheme is designed and put into use to the real ship testing. The torsional vibration test data of four sets of propulsion shafting of two ships were collected and analyzed. The preliminary results drawn from the analysis can provide references for ship shafting torsional vibration test and analysis.
On the Reasons for the Ventilator Bearing Noise and its Control
Authors: Wang Rong Jie , Chen Hong Wei
Published: February 2012

According to the phenomenon that the increasing noise of the ventilator in Longyan Beishan Coal Mine are caused by the bearings, this paper starts analyzing the reasons for the noise of the ventilator bearing, and thinks that the noise is mainly the active noise from the air and noise from the machines which are caused by vibrations. The noise of the ventilator bearing is related to such factors as its size, material, structure design, processing, assembling, loading, and lubrication. So it puts forward that workers should try to choose light, small-sized bearings so as to improve the quality of assembly, adjust the space and apply preloaded force; the workers should strengthen maintenance, use proper lubrication and enhance the monitoring.
Experimental Study on the Law of the Ground Surface Movement on the Old Goaf in Different Mining Conditions
Authors: Liu Xiu Ying
Published: February 2012

The formation process of goaf was dynamically simulated by similar material simulation esperiment. After mining coal was finished and the goaf was basically stable, deformation regularity of surface migrating was studied under gradual loading in different lacation of goaf . The results show: the residual deformation caused by load arranged on both sides of goaf is bigger than that caused by load arranged in the central of goaf. And the maximum values of residual deformation occur on both sides of goaf. The different mining conditions, load location and size will affect the residual deformation. In single mining conditions, a larger load in the both sides of goaf ,the greater the residual deformation.
Study on the Wheel Load Variation Simulation Method of Automobile ABS Performance Test Bench
Authors: Yu Ming Jin , Cao Feng Ping , Xu Tong Qiang , Qiu Xu Yun
Published: February 2012

A method of wheel load variation simulation for automobile ABS performance test bench is presented in the paper. To simulate the wheel load variation of the detected vehicle, the wheel placement angle on the rollers can be changed by adjusting the wheelbase between the ABS performance test bench’s two rollers, which support the same wheel. Equivalent wheel load is defined to reflect wheel load variation simulation, and the relationship among the equivalent wheel load, roller adhesion coefficient and wheel placement angle is also be analyzed. The simulation results show that the equivalent wheel load is not only can greater than wheel load many times, but also can less than wheel load. The minimum equivalent wheel load is determined by the critical wheel placement angle.
Design of Fixture for Measuring Tensile Properties of Walnut Shell
Authors: Liang Li , Guo Yu Ming
Published: February 2012

Measuring the tensile strength at the suture line of walnut shell is difficult by general fixtures. In this paper, a particular fixture was designed for measuring the tensile properties of the whole walnut shell based on the Pro/E software. The rigidities of main parts were checked by theory of mechanics combined with ANSYS. The results show that all the deformations were within the permissible scope, that is to say, this design is reasonable. Besides, four adjusting levers are designed to meet the size requirements of vary walnuts whose diameter is from 28mm to 40mm. Meanwhile, it can be conveniently located on the electronic universal testing machine.
Discussion on Bearing Matching Principles of Balancing Disc-Type Centrifugal Pumps
Authors: Cheng Xiang Xin , Wu Shuo
Published: February 2012

The bearing matching principles of balancing disc-type centrifugal pumps have been discussed in many textbooks. However, as far as the matching principle to be concerned, there are discrepancies between practice and theory. Starting with the working principle of balancing disc, aiming at balancing process, and combining with examples of centrifugal pumps and related query results, this paper analyzes and presents the bearing matching principles of balancing disc-type centrifugal pumps. It is expected to provide references to colleagues and marine engineers.
Study on Suspension Parameters of Motor Cars
Authors: Li Guo Dong
Published: February 2012

The vehicle flexible coefficient and the center of carbody sway movement are deduced. Based on the deduced equations, the influence of some critical parameters is studied for Motor Cars. In order to get the influence of the primary suspension on the dynamic performance, a vehicle model considered as a multiple rigid body system composed of wheelsets , bogie frames, carbody, primary and secondary suspensions is set up. Dynamic simulation results show that the primary suspension has a large influence on the vehicle.
Kinematics Simulation and Design of Work Elements of Demolition Robot Based on Virtual Prototype
Authors: Si Gui Mao , Liu Jun Wei , Zhang Jun , Meng Xiao Jing
Published: February 2012

Work Scope is key performance to the Demolition robot and is also a major factor consider to the users. CATIA and ADAMS were employed to design the 3D model and do the kinematics simulation to complete the design of work element of Demolition Robot. Parameters of assembly and interference detection of the 3D model was checked in the CATIA before taking the kinematics simulation experiment. The simulated result indicated that maximum radius, maximum depth and maximum height of Demolition Robot could be obtained, variance of forces at key articulated points and scope of work envelope diagram were presented, which provides a new method to analyze and design Demolition Robot.
The Evaluation of Module Division Programme Based on Information Entropy
Authors: Wu Yong Liang , Mao Bao Quan , Xu Li , Dai Dong Ming , Liu Yan Chao
Published: February 2012

Firstly, analysis product’s customer demand correlation, function correlation, geometric correlation, structure the corresponding correlation matrix, distribute the respective weighting factor, and then establish an integrated correlation matrix. Application of fuzzy clustering, the establishment of cluster map, the program has been divided into different modules. Based on information entropy theory, select product’s design and manufacturing complexity, cost, maintenance as the optimization objective, establish mathematical evaluation model of module division. Evaluating a number of options get from the fuzzy clustering method, which gain the most reasonable module division program. Finally, taking the seat frame of the Remote Control Weapon Station(RCWS) for example, verify the validity and reasonableness of the evaluation method.
Modular Design for a Novel Aid about the Disabled in Lower Limb Based on the Function Requirement Analysis
Authors: Zhang Jian Guo , Liu He Rong , Xue Qiang
Published: February 2012

To analyze the function demand for the rehabilitation aids on the basis of market research to the disabled. A novel multi-functional rehabilitation aid is developed based on the concept of modular design, which could aid the disabled to accomplish the daily living life care and rehabilitation training of the lower limbs. According to their real daily life needs and economic ability, combination with different modules could meet their various functional requirements and adapt to the market demands constantly.
Study on Variable Diameter Spiral Spring
Authors: Gao Jian , Wang Jian Zhong , Zhang Shi Long
Published: February 2012

On the foundation of analysis on non-cylindrical spiral spring force state, stress status and corresponding formulas in various segments of spring wire are derived, therefore the concept of varying spring diameter is put forward. Taking oblate prism spiral spring as an example, variable diameter spiral spring and invariable diameter spiral spring are separately designed under the instructions of the concept. An simulation is designed to examine the characteristics of the two springs in strength, stiffness and fatigue. The result shows that: both kinds of springs can meet the design requirements in maximum work force and fatigue, but the new spring are significantly lighter compared with the traditional invariable diameter, and the mechanical properties of material of the new spring are more fully played. This concept can be widely used in various fields of machinery, such as aerospace, vehicle suspension and small arms, and it will have important significance in designing new spring of light-weight and high-reliability.
The Influence of Lateral Confinement in Prestressed Concrete Structure under the Effect of Pre-Applied Force
Authors: Fang Shu Tian , Zhang Ying , Gao Yuan
Published: February 2012

The author analyzed the effect of lateral confinement under the pre-applied force in prestressed concrete structure and analyzed the influence of lateral confinement under the equivalent load of pre-applied force and rotation angle by the matrix deflection method in prestressed frame beam, at the same time the formula for the influence modulus of lateral confinement in prestressed concrete structure was proposed. Based on the analysis of practical projects, it’s indicated that the modulus of lateral restraint decreased with the increase of pre-applied force, and this kind of influence was small, and was the advantageous influence. Thereby provided basis for rational design of lateral confinement for prestressed concrete structure.
Non-Dimensional Design Method for Pressure Vessels
Authors: Liu Yan , Qu Yan Peng , Wang Wei Qiang , Chen Tong Lei
Published: February 2012

Non-Dimensional Design Method (NDDM) for pressure vessels may simplify the design process, reduce the human resource, and it can substitute for the traditional method. The principles and steps of the NDDM were presented. In the method, we constructed two kinds of non-dimension parameters through introducing referenced dimension and pressure. Non-dimensional data of the opening reinforcement structure of pressure vessels were attained. In order to validate the results, two pressure vessels with same structure and different computing pressure and size were designed. The correctness was checked by the present standards. It showed that the NDDM could be applied briefly and reliable.
Design and Optimization on Connecting Rod Parts of Engineering Clamp Hanger Based on Metamodel
Authors: Zhao Huai Bi
Published: February 2012

This paper investigates the connecting rod design and optimization of the engineering clamp hanger based on metamodel. The structure of the clamp hanger and the working load status of the connecting rod are firstly analyzed. Then the metamodel theory is applied to the connecting rod design and optimization: The metamodel of the connecting rod is set up in Solid Edge, and the design factors are signed as function-based parameters, with their geometrical relation changeless. The corresponding parameter value can be adopted by case-based inference means so that the required structure model of the connecting rod can be obtained. Finally, keeping the fine strength security and stability, the structure of the connecting rod is optimized. The presented research in this paper offers a new reference and thought for the hanger design and improvement.
A New Method of the Constraints Expression and Handling for Excavator Boom Structural Optimization
Authors: Hua Hai Yan , Lin Shu Wen , Shen Zhen Hui
Published: February 2012

In allusion to the deficiencies existing in current structural optimization algorithm of excavator boom such as the inefficiency in expressing and handling the constraints, the insufficiency in adopting the task knowledge to direct constraint handling, and the difficulty in obtaining and adopting the optimal process knowledge, a new method of the constraints expression and handling based on cultural algorithm for excavator boom structural optimization is put forward. The mechanism of hierarchical constraints expression and handing is established to improve the efficiency of the constraint handling in the optimal process with the cultural algorithm as frame and the task knowledge as guide. And the hierarchical topographical knowledge is formed to express tacit knowledge in the population space. Then the process of constraints expressing and handling as well as its interaction with the knowledge base is discussed under the direction of dual evolution in cultural algorithm while the aim of acquisition, expression and handling for tacit constraints knowledge in optimal process is realized. Finally, structural optimization of an excavator boom is taken as an example to demonstrate the effectiveness of this method.
Design of Control System for Automotive CVT Based on ATmega164P MCU
Authors: Cheng Yue
Published: February 2012

Control system and some functional circuits of automotive CVT (Continuously Variable Transmission) based on ATmega164P single chip computer were introduced in this paper. Hydraulic system of the CVT was controlled according to the throttle position signal, oil pressure, rotating speed of the engine and transmission output speed etc. This system has achieved the clamping force control of the metal belt.
Investigation on Optimization Strategies for the Hydrodynamic Design of DTMB 5415
Authors: Huang Jing Feng , Feng Bai Wei
Published: February 2012

The paper contributes to the field of ship design by investigating the applicability of formal strategies to the optimization of a ship’s hydrodynamic performance. A study on the geometric modeling, hydrodynamic analysis, design evaluation and shape variation of a DTMB5415 is presented. Optimization Algorithm is utilized to explore the design space and to improve the hull shape. The hydrodynamic design process is implemented: An advanced parametric modeling kernel is applied for efficient form generation and variation. The hydrodynamic performance is analyzed by state-of-the-art Computational Fluid Dynamics (CFD) codes for calm water resistance. A commercial optimization system is used to integrate the various CAD and CFD tools and to carry out the optimization.
Experimental Test and Numerical Simulation of Torsional Strength for Welded Metal Bellows
Authors: Si Huan Huan , Ahmat Mutellip , Meng Wei An
Published: February 2012

In this research, the numerical simulation of torsional strength for single and double layer of high parameter welded metal bellows mechanical seal is carried out and the stress-strain diagram is obtained. Besides, the torsional strength is tested by experiment and the result of it is compared with the simulating results, and the feasibility and availability of numerical simulation have been proved. The result provides a guide for the structural optimization and the calculation of torsional fatigue failure of welded metal bellows.
Study on Method of Recycling Liquid Crystal from Waste LCD Based on Supercritical CO2 Fluid Technology
Authors: Zhu Hu Bing , Wang Yu Lin , Liu Guang Fu
Published: February 2012

For recycling liquid crystal from waste LCD with high value, the method based on supercritical CO2fluid technology is proposed. The principle of extracting liquid crystal using supercritical CO2fluid is analyzed and the factors influencing liquid crystal recycling effect are discussed. The solubility of supercritical fluid is enhanced by adding polar entrainer in order to raise the recycling rate. The procedure for recycling liquid crystal with supercritical fluid technology is studied. Choosing TFT mode LCD as researching object, selecting different temperature and pressure and adopting isothermal and depressurization method, a series of recycling experiments are completed. The results show that the recycling rate of liquid crystal can reach 90% with the aid of supercritical carbon dioxide fluid technology and the purity and recycling efficiency of liquid crystal are high.
Evaluating Quantitative and Qualitative Models: An Application for Eco-Environmental Quality Evaluation in Lake Dianchi Basin, China
Authors: Li Jian , Guo Meng Chao , Yu Jing Jie , Xia Jun , An Hui Hui , Zhang Xiu Mei
Published: February 2012

Considering the various influencing factors of eco-environmental quality in Lake Dianchi Basin, the evaluation indexes of eco-environmental quality such as biological abundance index, vegetation coverage index, water network density index, land degradation index and environmental quality index are determined. The weight values of factor indexes are given by using the quantitative and qualitative model of analytic hierarchy process (AHP) and the eco-environmental quality of Lake Dianchi Basin was evaluated by using the quantitative and qualitative model of ecological index (EI). The evaluation results show that the grade of eco-environmental quality is weaker and the environment for human survival is harsh. The evaluation result is in good agreement with the results of previous studies. The evaluation system established in the paper can be regarded as a reference model for eco-environmental quality evaluation.
Analysis on Velocity Performance of Planar 3-DOF Parallel Manipulator with Actuation Redundancy
Authors: Wang Bing , Wei Zhi Hui
Published: February 2012

In this paper, the design space is utilized to obtain the analytical relationship between the link lengths of planar 3-DOF paralel manipulator with actuation redundancy and performance criteria based on the global velocity index. The corresponding performance atlases has been plotted, the atlases are an important base of reference for the mechanism design of this parallel manipulator.
Research on Hobbing Process Principles and Linkage Models for Higher-Order Elliptic Gear
Authors: Liu You Yu , Han Jiang , Zhang Gou Zheng
Published: February 2012

To solve higher-order elliptic gear manufacturing problems, this paper researches the pitch curves of higher-order elliptic gear and its transmission features, and creates the judgment method whether hobbing process can be applied. The four-axle three-linkage hobbing model for spur gear and the four-axle four-linkage hobbing model for helical gear are built by using tools (inclined) rack based on four-axle linkage strategy. This work provided the theory foundation for the manufacturing modular of higher-order elliptic gear in CNC System.
The Research Progress of Supervisory for Concentration of Emulsion
Authors: Zhao Si Hai , Liu Zhi Qiang , Wang Qi , Bai Yong Liang , Guo Yan Chen
Published: February 2012

The consistence of emulsion has great influence on the normal running and life of the equipment relying on emulsion. The paper introduces the current situation in development of detecting technique of emulsion in china. The literatures about various techniques of automatic supervisory system of emulsion proportioning have been compared, and the respective characteristics have been discussed. In this paper, the on-line detection methods for emulsion concentration and the recent progresses in the research on detecting technology of concentration of emulsion are reviewed. Involves the main content includes: the measurement technology of emulsion concentration and detecting and proportioning technique of emulsion.
Mathematical Model and Simulation Analysis of Hot Runner Temperature Field
Authors: Lv Yong Feng
Published: February 2012

The distribution of hot runner temperature field in injection moulds affects both the plastic melt performance and the quality of plastics and production efficiency．The establishment of mathematical model for the temperature field and the computing way were analyzed．The numerical analysis on the temperature field was made on computer, and a feasible mathematical model was achieved．Then a practical example was described．The study provides scientific and theoretical guide for the accurate control hot runner system temperature
Modeling and Simulation of Large Erecting System Based on Virtual Prototyping
Authors: Feng Yong Bao , Ma Chang Lin , Guo Xiao Song , Yu Chuan Qiang
Published: February 2012

The virtual prototyping model of large erecting system is established by means of ADAMS and AMESim software. Based on the theory of multi-rigid body dynamic, the topology description of erecting system is given. Dynamics analysis model of large erecting system is built in ADAMS software, and mechanics character is given through the analysis of the erecting system. The simulation model of hydraulic system is built using AMESim software. Collaborative simulation based on the interfaces of ADAMS and AMESim is discussed, and the dynamic characteristic of the erecting system is simulated based on the interfaces of ADAMS and AMESim. Some simulation results are given to demonstrate the validity of the proposed model. This method provides a new approach for the modeling and simulation of electro-mechanical systems.
GPS Monitoring and Warning Example of Bazimen Landslide Engineering
Authors: Tu Peng Fei , Peng Huan , Li Hong Tao , Xia Lang
Published: February 2012

Based on the research of Engineering geological characteristics，formation mechanism，failure mode and later change trend of Zigui county Bazimen landslide in Three gorges reservoir area,we put forward the warning construction scheme of landslide monitoring, introduce the layout of monitoring network and the construction technical requirements of all kinds of deformation monitoring,it can be refered to by other landslide monitoring projects.
Research on the Feed Servo System of CNC Machine Tool
Authors: Nie Xue Jun , Wang Li , Li Kun
Published: February 2012

In this paper, mathematical model of CNC machine tool’s feed servo system is established, various control methods of feed servo system in CNC machine tool are summarized, simulation models in different control modes are constructed by using MATLAB Simulink tools, also the influence of various control modes on system performance is discussed, some reference for feed servo system performance optimization in CNC machine tool are provided.
A Study on 3D Modeling-Mapping Technology in Underground Pipelines Detection
Authors: Zhang Lin Wen Jun , Lin Nan , He Kai Sheng , Tao Deng Wei , Bi Xian Gang , Gong Rui Yun
Published: February 2012

By collecting the data of the ground scene and non-destructive detecting of the underground pipe network, using freeform software design of the data collected by the three-dimensional color modeling and rapid prototyping systems will underground complex pipeline modeling, using ground-dimensional graphics and three-dimensional model of underground pipe network combined method, This paper is trying to find out an effective presentation method for the distribution of underground pipe network. Thus, an efficient, realistic, intuitive three-dimensional rapid mapping prototyping service technology corresponds to the ground and underground pipe network scenario is applied to urban planning, municipal infrastructure, scientific management, maintenance and reconstruction.
Super Gravity Dam Generalized Damage Study
Authors: Wang Ya Jun , Zhang Wo Hua
Published: February 2012

Fuzzy sub-space, with analysis on generalized uncertainty of damage, is setup in this paper when topological consistency of damage fuzzy and randomness on [0,1] scale being demonstrated deeply. Furthermore, deduced under fuzzy characteristics translation are three fuzzy analytical models of damage functional, namely, half depressed distribution, swing distribution, combined swing distribution, by which, fuzzy extension territory on damage evolution is formulated here. With the representation of damage variable ß probabilistic distribution as well as formulation on stochastic sub-space of damage variable, expended on the basis of extension criterion and fuzzy probability is damage model defined within generalized uncertain space, by which, introduced is fuzzy probabilistic integral algorithm of generalized uncertain damage variable that could be simulated by the forthcoming fuzzy stochastic damage constitution model based on three fuzzy functional models before. Moreover, in order to realize the joint of fuzzy input and output procedure on generalized uncertain damage variable calculation, fuzzy self-adapting stochastic damage reliability algorithm is, with the update on fuzzy stochastic finite element method within standard normal distribution probabilistic space by the help of foregoing fuzzy stochastic damage constitution model, offered in this paper on the basis of equivalent-normalization and orthogonal design theory. 3-dimension fuzzy stochastic damage mechanical status of numerical model of Longtan Rolled-Concrete Dam is researched here by fuzzy stochastic damage finite element method program under property authority. Random field parameters’ statistical dependence and non-normality are considered comprehensively in fuzzy stochastic damage model of this paper, by which, damage uncertainty’s proper development and conception expansion as well as fuzzy and randomness of mechanics are hybridized overall in fuzzy stochastic damage analysis process.
Application of Multi-Monitoring Information for Bridge Safety Evaluation
Authors: Lee Yen Jen , Wen Jet Chau , Chen Chern Hwa , Lin Yuh Yi
Published: February 2012

Due to large flexibility in cable-stayed bridges, vibrations induced by seismic, traffic and wind loads are more significant than those in other types of bridges. These vibrations may cause structural damage, such as fatigue in stay cables, large deflection in main girder, etc. The objective of this paper is to investigate long-term dynamic characteristics of the Kao Ping Hsi cable-stayed bridge subjected to different external force conditions by using a bridge health monitoring system (BHMS). The bridge has been bearing the loads of traffic for more than a decade. To ensure the safety of the Bridge, the Bureau has developed a BHMS for the long-term monitoring of the overall structural safety over the entire operation stage in terms of seismic response, wind resisting response and cable vibration, as well as travel comfort. The BHMS will provide multi-alarm information for the study of bridge safety management and maintenance in relation to seismic activities, wind vibration and traffic.
Fabrication of Silver Shells onto Silica Sphere for Infrared Emissivity
Authors: Ye Xiao Yun , Zheng Chan , Xiao Xue Qing , Cai Shu Guang
Published: February 2012

SiO2/Ag core-shell composite microspheres were synthesized by silver-seeding method in this paper. In the process, silver nanoparticles as seeds were deposited by repeating the cycle times for further formation of Ag shell. The effects of reaction power and time on the seeding of silica surfaces and the effect of silver ion on the growth of silver shells were investigated. Structures and properties were measured with TEM, UV, FT-IR and Infrared emissometer. The results showed the Ag nanoparticles on the silica surfaces were uniform in size. And the number density was increased growing with the increase of deposition. It was found that the composite exhibited a lower infrared emissivity value in the wavelength range from 8 to 14 μm than that of pure silica as a result of strong reflection of silver metal.
The Markov Skeleton Process Modeling on the Management and Decisions of New Technique Popularization
Authors: Zhou Yong Wei , Fan He Hua
Published: February 2012

This paper is devoted to studying the management and decisions model of new technique popularization by using the theory of Markov Skeleton Process by Zhenting Hou etc, and draw the conclusion that the number of enterprises which are using the new technique at any time is a minimum nonnegative solution of a nonnegative linear equation.
Running around a Gyrotropic Material
Authors: Tao Ke Yu , Wang Qiong , Zhai Jian Pang
Published: February 2012

Non-reciprocal component is very important for nanophotonic circuit. In this article, we demonstrate that a kind of unidirectional surface state can exist in various interfaces between magnetized gyrotropic material and other medium. Since this type of modes is not limited by bandgap as those in photonic crystals, it provides possibilities for making broad-spectrum non-reciprocal devices.
The Dynamics Analysis on a Type Palletizing Robot
Authors: Li Jin Quan , Zhu Su Xia , Lei Quan Sheng
Published: February 2012

Based on a palletizing robot, its kineto-static model is created via d'alembert's principle and dynamic statics method. The force of key components with its posture change will be obtained by use of the Matlab. This model is applicable to dynamic analysis on the robots with similar configuration and the results based on the parameter variation is also applicable to this kind of robot’s design, checking and kinetic control.
A Generalized Cholesky Decomposition for Interval Matrix
Authors: Zhao Zhi Li , Li Wei , Deng Chong Yang , Wang Hu Ping
Published: February 2012

Using the generalized interval arithmetic we give a generalized cholesky decomposition. Generalized intervals (intervals whose bounds are not constrained to be increasingly ordered) extend classical intervals providing better algebraic properties. In particular, the generalized interval arithmetic is a group for addition and for multiplication of zero free intervals. These properties allow one constructing a cholesky decomposition of a generalized interval matrix A: the computed generalized interval matrix L satisfy A=LLTwith equality instead of the weaker inclusion obtained in the context of classical intervals.
Synthetic Process Research and Development of Resveratrol
Authors: Zhang Yue , Zhang Yan Yan , Yu Chun Jie , Wang Chun Fang , Zhao Shu Chun
Published: February 2012

An industrially efficient process for manufacturing resveratrol (3,4',5-trihydroxystilbene) from 3,5-dihydroxylbenzoic acid in Wittig-Horner route was developed. The significant progress is embodied in improvement for reduction or oxidation process and mild reaction conditions with fewer environmental pollution, and especially the high quality product (≥ 99.0%, HPLC) with favourable yield (beyond 64%) were obtained.
Research on Transmission Control Unit Testing for AMT of Heavy-Duty Commercial Vehicle
Authors: Lei Yu Long , Zeng Hua Bing , Jiang Xin
Published: February 2012

Hardware-in-the-loop simulation model of AMT of heavy duty commercial vehicle is built in this paper. The testing methods of TCU underlying and control layer are brought up and a corresponding test case is added based on actual needs. This paper provides an effective testing method for a TCU program designer to modify control strategies.
Research on Kinematics for Planetary Bevel-Gear Trains
Authors: Yin Bao Lin , Li Xian Zhi , Chen Yong Bo , Guo Xiao Yun , Liang Yi
Published: February 2012

A kinematics model of planetary bevel-gear trains, which included two sun gears, four planet gears and two carriers, was established. With analyzing of the gear trains, non-oriented graph representation of the mechanism was developed. Then, the kinematic structure of the gear trains was represented. With coordinate conversion, the successive transformation matrices were derived. And then, the oriented graph representation of gear pair was obtained by analyzing rotation vectors. Lastly, the inverse kinematics equation was obtained. To given the orientation of the moving platform variables, the equations have the identify solutions.
Design and Technology of All-Welded Longitudinal Seam Sand Control Liner
Authors: Liu Xiao Liu
Published: February 2012

The new longitudinal seam pipe-type screen is designed, in order to avoid wire disorder and damage of wire wrapped the screen passes the bending zone in the heavy in dined well or horizorital well. The new longitudinal seam pipe-type screen cut outboard is narrow and the other is wide, so it is hard to be built up . It can clean by itself. it has high efficiency of sand control，equality gap，big circulation area，better corrosion resistance and longer service life. The application of slotted liner’s area of oil pass is bigger than the same specification’s application of slotted liner by four to seven times. The application of slotted liner holds true to extract oil in the horizontal and high-angle well which is the grains of sand’s diameter is bigger than the 0.15 to 0.3mm.The design of construction is up to the mustard construction under the well. It is safer and more reliable in the well completion.
The Optimization Design of the Tunneller Drive Wheels Walk Department
Authors: Luan Li Jun , Li Ning , Chang Sheng , Yu Shu Hua
Published: February 2012

In this paper, do a stress analysis research on driving wheels of EBZ16 road header walking components, set up the 3D model by Pro/E, through the interface between Pro/E and ANSYS, import the wheel model into ANSYS ,have a static stress analysis, check the wheel’s strength .Have a topological optimization by OC method on driving wheel, from the result we can see this design can basically satisfy the demand, and can reduce %15 volume than the former design ,provide theory basis for improving the design and performance of the driving wheels.
Design and Achievement of Automatically Generated Fault Tree and Fault Diagnosis System for Loaders
Authors: Feng Yan , Liao Jun
Published: February 2012

By using Hibernate + Structs + JSP component technology and in the overall technology of MVC 3-tier application, automatically generated fault tree and fault diagnosis system for loaders was designed and developed based on Eclipse platform in web development language of Java EE.
The Fuzzy Reliability Robust Design Based on MATLAB
Authors: Li Guang Hui , Liu Tao Tao , Zhang Li Hua
Published: February 2012

In order to rationalize the design of the worm-drive, the fuzzy reliability design method and robust design method were fully applied to develop the new model for fuzzy reliability optimization design of worm-drive with the minimum weight, minimum sliding-velocity, and minimum sensitivity as the objective function. The fuzzy optimization design result of the worm-drive was obtained by compiling MATLAB procedure. Compared with traditional design methods，the center distance was reduced by 33.3％, the sliding speed is reduced by 10.6%.The life of the worm-drive was raised by11.5％,and the wear quantity of the worm-drive was decreased by 0.1％after 100 hours' running.
Computerized Modeling and CNC Machining Simulation of Spiral Bevel Gear
Authors: Wang Wen Jin , Zhang Zhi Qiang , Zhang Jing , Zhao Jian , Zhang Ling Li , Wang Tai Yong
Published: February 2012

Based on the theory of gearing and differential geometry, a CNC hypoid generator mathematical model for spiral bevel has been developed. A mathematical model of a spiral bevel gear-tooth surface based on the CNC Gleason hypoid gear generator mechanism is proposed in the paper. The simulation of the spiral bevel gear is presented according to the developed machining mathematical model. A numerical example is provided to illustrate the implementation of the developed mathematic models.
City Council Candidates Apply Innovative Management Models in Five Taiwanese Cities
Authors: Chen Hsuan Yi , Hsu Ming Tsai , Chiu Chin Hsin , Ho Li Hsing
Published: February 2012

Abstract. The paper discusses the innovative management models in human resources of Taiwan as applied to the council candidates in five cities. Because of the current financial and economic crisis, people find that they are living in an unstable environment. Council candidates in five cities are faced with the question of how much people will trust them to break through this plight. If the social welfare services are improved people's trust may be somewhat restored in the city council candidates. This research method is qualitative research, it based on Yi-Cheng science name classification. The result shows that in A, C, F, and H areas the people may be willing to accept them, especially in C1, F3, H5, A1, F1, B3, E1, D5, G8, H3, B1, and D1. Since the economic level is rising in Eastern Asia, management is using it to their advantage and expects that they may find the top managers in Asia.
A Threshold Voltage Simulation of Hydrogen-Terminated Diamond MESFETs
Authors: Zhuang Xiao Feng , Zeng Qing Kai , Ren Bing , Wang Zhen Hua , Zhang Yue Lu , Shen Li Ya , Bi Mei , Huang Jian , Tang Ke , Shi Ling Yun , Xia Yi Ben , Wang Lin Jun
Published: February 2012

In this paper, the threshold voltage of diamond film-based metal-semiconductor field effect transistors (MESFETs) has been simulated using Silvaco TCAD tools. The drain current (Id) versus gate voltage (Vg) relationship, and the distribution of acceptors in diamond surface conduction layer were also investigated. From the simulation results, it was found that the gate length contributed the most to the threshold voltage, while the doping depth almost had no impact on the threshold voltage value.
Influence of Annealing Treatment on N-Doped TiO2 Films Deposited by Pulsed Negative Bias Arc Ion Plating
Authors: Zhang Shu Juan , Li Ming Sheng , Chen Zhi Qin , Fan Yong Zhong
Published: February 2012

The N-doped TiO2thin films were deposited on medical glass slide by pulsed negative bias arc ion plating. The influence of pulsed negative bias, annealing temperature and time on films properties was investigated. Film structure, surface morphologies and optical properties were measured with XRD, SEM and UV-VIS transmittance spectroscope. Photo-catalytic performance of the films was evaluated by degrading methyl orange. The results show that the absorption edges of the as-deposited films increase with the rising of the pulse negative bias, and the maximum of 550 nm is achieved under -600V bias. The films absorption edges increase in different degree after annealing at 400°Cand 500°Cfor 2h, and the best extending can increase 22nm after annealing. The diffraction peak intensity and surface grain size increase with increasing the annealing temperature and time. The grain size of films after annealing at 400°C for 4h is largest of all the films. The pulsed negative bias and annealing treatment not only indecrease TiO2thin films the UV catalytic performance, but also extend the catalytic properties to the sunlight.
Evaluation of Iodine Source Term in PWR under Loss of Coolant Accident
Authors: Mehboob Khurram , Cao Xin Rong
Published: February 2012

During the severe accident in nuclear power plant (NPP), large amounts of fission products are released with accident progression, including In-vessel and Ex-vessel release. Thus, the Source term evaluation is essential for the probability risk assessment (PRA) and is still imperative for the licensing and operation of NPPs. Iodine is one of the most reactive fission products emitting in a large amount to containment and have a severe impact on health and sounding environment. Therefore, the iodine source term has been evaluated for 1000MW Reactor, by considering the TMI-2 as the reference reactor. The modeling and simulation of released radioactivity have been carried out by developing a MATLAB computer-based program. For post 1100 operation days, with the instantaneous release of radioactivity to the containment has been studied under LOCA. The dependency of radioiodine on ventilation exhaust rates has been studied in normal, emergency and isolation mode of containment. Moreover, the containment retention factor is also evaluated in said states of containment.
Study on Silane Treatment Technology in the Painting Pretreatment
Authors: Ren Yi Jin , Zhou Quan
Published: February 2012

Silane treatment is a new method of coating pretreatment, its mechanism, process, traits and problems in the applications were studied. Compared with the traditional phosphating treatment, silane treatment has the characteristics of non-pollution, simple operation, energy saving and environmental protection, and can substitute for the phosphating treatment and has a great development potential.
Study on the Material Mechanical Performance of Large Scale Self-Compacting Rock-Filled Concrete
Authors: Wang Hai Chao , Xin Jian Da , An Xue Hui , Xu Xi Quan , Zhou Li Jun
Published: February 2012

In order to study the influence of large size aggregate on self-compacting rock-filled concrete, the compactness between self-compacting concrete (SCC) and rocks, as well as the whole workability of self-compacting rock-filled concrete, the experimental test in the present paper was carried out on the 500-ton electro-hydraulic serve testing machine and the sizes of specimens are 450mm×450mm×450mm and 450mm×450mm×900mm. The results show that the exterior damage of self-compacting rock-filled concrete specimens are different from that of standard concrete specimens; the damage sections are flat and rocks are cut through in some areas, which shows mainly bond failure at interfaces between self-compacting concrete (SCC) and rocks. The compactness inside is well and the strength of self-compacting rock-filled concrete can almost reach that of SCC, which provides theoretical basis for the application of self-compacting rock-filled concrete.
Design of Material Conveyed Manipulator Control System
Authors: Zhang Hai Ying
Published: February 2012

It is very important that apply manipulator to transit material in certain high-temperature, multi-dust dangerous environment. Design a kind of manipulator which used PLC as main controller. Use this manipulator to replace manpower transiting material. It discourses in detail the composition of the control system and the software realization method. Practice shows that the application of manipulator not only reduced the labor intensity of the worker also significantly increased productivity.
Cloud Computing for the Virtual Comprehensive Management Platform Design
Authors: Wang Bing , Zou Yan Ling , Wu Qi Man , Guan Zhong Ren
Published: February 2012

With the in-depth development of informatization construction, various business gradually campus network integration. Our school VMware to the virtualization based on various departments to provide hosting services, but in the virtual machine application and management in the process of maintaining involved a lot of artificial operation, constitute the bottleneck management. Thus use cloud computing to design virtual comprehensive management platform, and with web services for the virtual machine as an example to introduce the function of the platform. This platform has significant meaning to improve management efficiency of virtual machine and speed up our school information construction pace.
Design of UHF Thin Film Transformer and Research of its S-Parameter Performance
Authors: Hu Xiao Ping , Chen Bin , Zhong Ye Long , Xu Jun Ming
Published: February 2012

A novel spiral stacked thin film transformer was designed based on Si IC technology in this paper. And also, the stacked air core and ferrite core thin film transformers with different turns ratio were prepareed. Then, the S-parameter performance of these two kinds of transformers were measured. The measurement results show that the magnetic core thin film transformer has a better electronic transmission performance. It obtains maximum transmission efficiency 93.7% at the frequency range from 10MHz to 20GHz, and the air core transformer obtains maximum 89% at the same frequency range. Many testings show that ferrite core thin film transformer with turns ratio 1:1 can obtain the transmission efficiency over 60% at the frequency range from 2GHz to 16GHz.
Research Development of Modification of Galactomannan Gums from Plant Resources
Authors: Ba Jin , Gao Yang , Xu Qing Hua , Qin Meng Hua
Published: February 2012

As a group of environmental-friendly chemicals, galactomannan gums acquired from plant resources demonstrates some distinguishing features such as convenient preparation processes, unique physical-chemical characteristics and bio-chemical properties. Moreover, these attributes can be further improved through modification of chemical and bio-chemical approaches. Therefore, they are found more and more applications in many major industries. This paper introduced the research development in the field of galactomannan gums, including their structure analysis and characterization, chemical and enzymatic modification, as well as applications in some industries.
Chaotic Mutation Bee Evolution Algorithm
Authors: Yao Yuan , Zou Yan Ling , Wu Qi Man , Guan Zhong Ren
Published: February 2012

In order to make full use of chaotic mutation genetic algorithm and the chaotic mutation and bee evolution algorithm, the characteristics of the two algorithms, and the combination of chaotic mutation bee evolution algorithm is proposed. The algorithm in bee evolution process, to adapt to the value of group of smaller portions of the variation of individuals to chaos; to adapt to the value of group of large part of the individual, to the best individual as the center, change crossover operation, each generation is the best individual immune evolutionary iterative calculation. Thus, as the iteration, the algorithm not only fast convergence, and can also by a higher accuracy by the global optimal solution.
The Calculation and Experimental Research on the Properties of Reflectance of Methyl Red Doped Polymer
Authors: Qi Sheng Wen , Lu Hong Guang , Liu An Ping
Published: February 2012

The reflection spectrum of Methyl Red (MR) doped PMMA film is measured and modified. The refractive index of the sample is gained by calculation of Kramers- Kronig relation with the data of the reflection spectrum. The refractive index change of the sample is gained with the absorption specta. The MR doped PMMA sample has a refractive index change under 532nm laser excitation, in which the valley value happens around 400 nm and peak value around 600 nm. This result shows that the MR doped PMMA sample has an obvious photo induced refractive index change, especially at 400nm and 600nm.
Study on Synthesis of Zirconolite Using Simulated Radioactive Incineration ASH
Authors: Piao Yu Xi , Wen Ming Fen , Chen Ji , Wang Jian Chen
Published: February 2012

The minerals of zirconolite doping simulated radioactive incineration ash were fabricated by solid reaction, using zirconium dioxide, titanium dioxide, calcium carbonate or CaTiO3 as raw materials. The phase assemblage was tested by X-ray diffractometer. TG-DSC was tested by SDT-Q600. Compared to carbonate preparation method, using intermediate products (CaTiO3) preparation method to synthesis CaZrTi2O7 is more energy saving.