bluuebunny/crossref_metadata_2025 huggingface dataset:
G M (1,1) Optimization Model Re-Optimization
Authors: Chen Yao
Published: June 2012

On the base of the basic differential equation, a new GM (1,1) model applying to non-homogenous index series was established by optimizing the background of original differential equation. Meanwhile, solution algorithm and efficiency of the optimization model was presented and verified in the paper respectively. The results showed that this nonlinear discrete gray prediction model significantly improves the simulation accuracy and is suitable for the non-homogeneous high-growth series. Therefore, our research has certain theory significance and the practical application value for simulation of grey model.
Identification Method for Structural Parameters
Authors: Yang Li Bin , Wang Ju Lin
Published: June 2012

A hybrid method for identifying structural parameters is presented in this paper. All the measured and integrated responses are analysed using the identification method with a shift-average procedure to identify the stiffness and damping parameters as well as to reconstruct the unknown seismic input. To evaluate the reliability of the method, the identified structural stiffness is compared with the theoretical value computed from given material and geometric properties.
Investigation and Application of the BOUAD Characteristics in Multidimensional Vibration’s Parametric Space of Drilling Pump
Authors: Lv Miao Rong , Pei Jun Feng , Li Mei , Shen Shi Gang , Wei Bao Jian
Published: June 2012

A large amount of drilling pump vibration signals are acquired and decomposed optimally into time-frequency atoms by the Pattern Filter Method. All of these time-frequency atoms are falling into the multidimensional statistical cube which is formed by the time-frequency atomic parameter (α,f,φ,A) space with certain interval length. The atoms in every cube are counted and the results are stored in a database. When keeping any two parameters in a certain range, the quantitative distribution contour maps in the plane of other two parameters are demonstrated by the Graf software tool, then all sub-space results were aggregated to construct the macro-views of the BOU quantity distribution in the four-dimensional space ,meanwhile the quantitative distribution of these atoms are investigated, the distribution characteristics for various vibration signals of drilling pump are obtained and all atoms are classified according to their clustering state in this parametric space. Furthermore, every special signal corresponding to the parametric feature clustering of atoms in this multidimensional space have been identified. The desired results have been achieved in signal identification and drilling pump fault diagnosis by use of these consequences.
Measurement of Curved Surface Roughness by Polychromatic Speckle Method
Authors: Huang Jing , Yuan Zong Heng , Ge Yi Fan
Published: June 2012

The influence of curved surface on the method of polychromatic speckle autocorrelation measuring surface roughness is studied by introducing the curvature radius of surface. The rough surface, and the dichromatic speckle patterns, and trichromatic speckle patterns are simulated, and the effects of different radius of curved surface on speckle patterns and speckle elongation ratio are discussed. The results show that the larger curvature radius is, the larger speckle elongation becomes, and the smaller the deviation of measured surface roughness is. Therefore, influence of curvature of rough surface on measurement precision should be taken into consideration during measuring process.
Traction Performance Testing of Dongfeng 8B Locomotive and Failure Analysis for Operation on Southern Xinjiang Railway
Authors: Wang Yu Hui , Ye Deng Kang
Published: June 2012

In order to test the performance of Dongfeng 8B locomotive, a series of identification tests on prototype were carried out, which included the cab noise test, emergency braking distance test for single vehicle, weighing of locomotives traction performance test and dynamic performance test. A series of problems were discovered after a comprehensive operation test on the Southern Xinjiang Railway, relevant causes are identified after analysis and investigation, and appropriate corrective measures are proposed.
Free Vibration of Piezoelectric Laminated Cylindrical Shell with Delamination
Authors: Yang Jin Hua , Chen De Liang , Jiang Cheng
Published: June 2012

Abstract. The free vibration of the piezoelectric laminated cylindrical shell with throughout circumference delamination is analyzed in this paper. By introducing the Heaviside step function into assumed displacement components and using elastic piezoelectric theory, the constitutive relations of the piezoelectric laminated shell with delamination are established. Then the dynamic governing equations of the structure are derived through variational principle. In numerical examples, the effects of delamination length, depth, boundary condition, material property and thickness of piezoelectric layer on the first natural frequency of piezoelectric laminated shell with delamination are investigated.
Stochastic Resonance in a Second-Order Linear System Subject to Signal-Modulated Noise
Authors: Li Feng Bao , Lei Xiao Yan , Zhu Fu Cheng
Published: June 2012

An over-damped second-order linear system with fluctuant coefficient of the second-order derivative and signal-modulated noise is considered. Based on linear-system theory, the expression of the output amplitude is obtained. Analytical results shows that the output amplitude is a non-monotonic function of the noise strength, and it varies non-monotonously with the increase of the system parameter a and b, while it decreases monotonously with the increase of the signal frequency and the system parameter c.
The Dynamics Analysis of a Multi-Stage Hybrid Planetary Gearing
Authors: Tan Xin , Li Yao , Yang Jun Jie
Published: June 2012

This paper introduces a complex multi-body dynamics model which is established to simulate the dynamic behaviors of a multi-stage hybrid planetary gearing based on the finite element method and the software ADAMS. The finite element method is used to introduce deformable ring-gears and sun-gears by using 3D brick units. A whole multi-body dynamics model is established in the software ADAMS. Mesh stiffness variation excitation and gear tooth contact loss are intrinsically considered. A rich spectrum of dynamic phenomena is shown in the multi-stage hybrid planetary gearing. The results show that the static strength of main parts of the gearing is strong enough and the main vibration and noises are excited by the dynamic mesh forces acting on the tooth of planet-gears and ring-gears.
Research on NN-PID Motion Control Technology for a Wheeled Mobile Robot
Authors: Feng Shi Zhu , Xu Ming
Published: June 2012

Robotics is a spiry integral technology of mechanics, electrics and cybernetics. Through systematical study of a wheeled mobile robot, The kinematic model of it is deduced. A Cerebella Model Articulation Controller (CMAC) PID controller was developed to control the motion to accomplish the realistic motions of the wheeled mobile robot system. The experimental is carried out. The results prove the algorithm is correct, and indicate that the design of CMAC-PID controller is a success. The whole research will provide a reference to the study of the mobile robotics.
Expert System of Chinese Medicine on the Moving Robotic Platform
Authors: Wang Ching Kuo
Published: June 2012

The PC-based ryodoraku technique has played increasingly important role in the field of traditional Chinese medicine because of its advantages of better preventive diagnosis, less side effects and inexpensive medicare. Since the 1950’s, Dr. Nakatani Yoshio has developed the ryodoraku methodology to measure skin resistance for the purpose of preventive diagnosis based on Chinese acupuncture and the qi-field theory. However, the physician can hardly measure and adjust the qi-field biological energy of the limb meridians because of the clinical complexities for the moving robotic platform handicappers. In this paper, the ryodoraku theory of the limb meridians is modified by the bladder meridian detection on the spinal cord of handicappers so that they can acquire better clinical therapy. A PC-based expert system is developed on the crystal panel to detect bladder energy and make real-time acupuncture therapy according to the qi-field reactions on the spinal meridian of the examinee. Finally, clinical experiments are carefully schemed to justify the advantages of the proposed algorithm in Tse-En Clinic of Traditional Chinese Medicine.
Optimal Pole Assignment of Self-Balancing Robot System
Authors: Zhao Yan Hua , Zhang Guo , Duan Chun Xia
Published: June 2012

Self-balancing robot is a multivariable, coupled, nonlinear dynamic system, using the optimal pole assignment which can give attention to both good dynamic characteristics and LQ optimal design technology robustness and other advantages. Emulation and real-time control are given to show the effectiveness of the presented method.
Heteroclinic Bifurcation Analysis of Duffing-Van Der Pol System by the Hyperbolic Lindstedt-Poincaré Method
Authors: Chen Yang Yang , Yan Le Wei
Published: June 2012

The heteroclinic bifurcation of the Duffing-Van der Pol oscillatory System is studied by the hyperbolic Lindstedt-Poincaré method. The heteroclinic solution can be solved analytically by the method. And the critical value of the bifurcation parameter under which heteroclinic orbit forms can be determined by the perturbation procedure. Typical applications are studied in detail and compared with numerical results to illustrate the accuracy of the present method.
An Improved Particle Swarm Optimization Algorithm
Authors: Na Ri Su , Li Qiang , Wu Li Ji
Published: June 2012

Based on the standard particle swarm optimization an improved PSO algorithm was introduced in this paper. The particle swarm optimization algorithm with prior low precision, divergent character and slow late convergence is improved by joining the negative gradient. By adding negative term on standard PSO formula, combining with coefficient of negative gradient term and inertia weight , lead to effectively balance between the local and global search ability. It will accelerate convergence and avoid local optimum. Moreover, from the bionic point of view, this improved PSO algorithm is closer to the reality of the actual situation of the bird flocking. From the simulation results of four typical test functions, it can be seen that an improved particle swarm optimization with negative gradient can significantly improve the solving speed and solution quality.
Study on the Modal Analysis of the Cleaning Mechanical Drive Axle Housing
Authors: Xie Xiao Zhu , Wang Wei Guo , Wei Xin , Hu Wei , Ren Qing Lei , Yuan Xue Rui
Published: June 2012

A finite element method (FEM) is used to make the modal analysis of the drive axle housing, the first ten natural frequencies and modal shapes are obtained. The parameter identification method is applied to obtain the experimental modes. There is a great agreement with the calculating modes and the experimental ones, which proves that the finite element method is rational. According to the theoretical analysis, the main deformations are bending and torsion at both ends of the drive axle housing and the deformation of the middle part is relatively high. The natural frequencies are at middle and high frequencies which are close to the mesh frequencies of the drive axle gears. Therefore increasing the thickness and redesigning of stiffened palates are applied to avoid the resonance region effectively.
The New Method of Cutting about Different Diameter Right-Angle Tee Pipe
Authors: Xiong Xiao Hang , Sui Bo Yuan , Yan Shao Feng
Published: June 2012

An introduction is made of a new method, which use computer to get an accurate unfolding drawing, to calculate the cutting stock of chemical container’s connecting pipe. Practice proved that this method is not only fast and convenient, but also accurate and reliable.
CAD/CAE on the Mould Plates of Vertical Type High-Pressure Grouting Machine
Authors: Huang Zhi Cheng
Published: June 2012

Took a type of ceramics for daily use vertical type high pressure grouting machine as the object of study, study the stress and strain of its upper and lower mould plates. Established their 3D model by CAD software Pro-E, and then import them into finite element analysis software to analysis the value and distribution of the stress and strain. The analysis results can provide some reference for design, and have some engineering and practical value.
Kinematic Analysis and Optimization Design of Elliptical Geared Double-Rocker Mechanism
Authors: Huang Zhi Dong , Du Yun Pu , Cong Juan , Zhao Liang , Wang Yun , Yang Guang
Published: June 2012

Kinematic characteristics of double-rocker mechanism is analyzed. Based on variable ratio transmission characteristics of elliptical gear, elliptical geared double-rocker mechanism is presented. Kinematic characteristics of elliptical geared double-rocker mechanism is clarified. Eccentricity is optimized. The elliptical geared double-rocker mechanism with approximate uniform rectilinear motion is designed. The methods in this paper facilitate the innovation design of the mechanism with approximate uniform rectilinear motion.
Fuzzy Multi-Objective Optimization for Die Structures Design in Sheet Metal Forming
Authors: Sun Qi Xin , Xi Ping Yuan , Zhang Ren Jian
Published: June 2012

Abstract: Finite element analysis and fuzzy multi-objective optimization technique have been integrated to solve the die structure design of sheet metal forming by transforming fuzzy multi-objective problem into a normal optimization problem. A mathematical model of fuzzy optimization for bending die was established. A fuzzy goal set was constructed. The fuzziness of multi-objective functions and constraints were defined. The optimal solution and optimal constraint value of individual objective function in the feasible field were found using the genetic algorithms. An electronic part bending case shows that this approach is more effective and accurate than traditional finite element analysis method and the ‘trial and error’ procedure.
Design and Application of the FROMO® Preload Nut
Authors: Liu Ying , Shen Jian Chu
Published: June 2012

The design of a new pre-tensional structure(FROMO® preload nut) applied in the large size of screw thread was introduced, the preload bolt is only beared with the pure tensile stress. The pre-tightening force for the preload bolt and pre-tightening torque for the jack bolts were calculated. The practice elongation value of the preload bolt was measured, and compared with its theoretical elongation value. The result shows that: the new pre-tensional structure has adequate strength, it can control the pre-tightening force accurately with manual acting spanner, it increases efficiency and ensures the safety of operating , and which has promised the good performance in the application of the projects.
Chaos Optimization Algorithm for Vehicle Routing Problem
Authors: Wen Zhi Bin , Yue Yi Xiang , Yue Qun Xing
Published: June 2012

The vehicle routing problem (VRP) plays an important role in the optimization of distribution networks. Therefore, this paper designed an algorithm that can solve the VRP by using the Chaos Optimization theory which has the advantage of ergodicity and randomness. In this algorithm, logistic map generate chaotic groups and chaotic groups generate initial feasible solution (optimized by the chaos search). Then obtain final solution by using interpolation node method under the constraints of VRP. The effectiveness of the algorithm and the superiority of the result were demonstrated by the test of some benchmarks and the comparison with other optimization algorithm.
Size Optimization of the Pillars in the Flexible Gripping Tooling Stent
Authors: Su Chang Qing , Li Jing , Du Bao Rui
Published: June 2012

Large flexible clamping tooling stent is mostly volume which wasted a lot of materials. Structure size is to optimize the details of the flexible clamping tooling optimization design. It is by changing the properties of the structural unit - for example, the shell element thickness, the cross-sectional properties of the beam element, the stiffness of the spring element and the quality of the mass element to achieve a certain design requirements (such as stress, mass, displacement)。This design is use of hyper mesh software to optimize the size of the pillar on the flexible clamping tooling bracket. The pillars can be as a shell for analysis, a stress constraint is specified materials at least, reduce the weight of the parts, save the cost of production to achieve the optimization purposes.
Research on Aerospace Equipment Machining Process Optimization Based on MBD Procedure Model
Authors: Xiong Dan Dan , Yang Hai Cheng , Wan Neng
Published: June 2012

The development of intelligent design manufacturing based on the three dimensional environment of knowledge engineering is the important research content. This paper set MBD procedure model as a process of design and the basic of optimization, establishing basic process said and evaluation method according to space product manufacturing characteristic. With Model based definition, the key equipment information of aerospace products manufacturing is the starting data of the process of optimization, and realize the space cable equipment a process design and optimization process, product process for space design and optimization provided based on full 3D model of application methods, established the process design of the application, the actual proof, design and optimization combined with MBD procedure model is the important guarantee of process design.
Kinetics Analysis and Optimal Design Method Explore on Rotating Cone Reactor Based on Dynamics Theory and Modern Simulation Technology
Authors: Zheng Ming Hui , Zhu Cong Ling , Jiang Ji Bin
Published: June 2012

In this paper, design problems on rotating cone reactor have been studied and dynamics problems have been analyzed in detail, kinematics differential equation of mixture in rotating cone reactor and simulation model has been established. Rotating cone reactor prototype which was established preliminarily has been optimized with simulation software. Dynamics analysis and simulation is of great significance in raising the efficiency of BIO-FUEL-OIL flash pyrolysis rotating cone reactor, control production process reliably, and even optimizing design value and physical dimension which is reasonable in design and reducing the cost of product development process.
Availability of Double-Tube Flood Mark Stream Gauge
Authors: Cheng An , Cheng Chao Chung , Qiu Qi , Chang Jia Ruey , Hsu Hui Mi , Liao Tang Chieh
Published: June 2012

It is commonly accepted that absolute immunity from flood damage is not physically possible even in the distant future because of unpredictability of several natural forces which might cause unprecedented situation. Even so, with proper planning and continuous effort we can certainly look forward to an appreciable diminution of distress with an accelerated implementation of flood management measures. It is commonly accepted that the measures to mitigate flood losses need to be given the most efforts wherein flood damage assessment is the primary measure of mitigation. This has been viewed mainly as a physical method of protection from floods. To make the measures to mitigate flood losses, it first needs to effectively measure the flood influence in which flooded area and height may be the most desired measures for each of typhoon-induced ﬂood events. On the other hand, sophisticated hydraulic modeling tools are now available to help us estimate the scale of we face from typhoon-induced flooding from a computational perspective. The flood scale in terms of area and height of typhoon-induced ﬂood events may be the major contribution to feedback for the calibration of those sophisticated hydraulic modeling tools. Thus, a flood mark recording device is highly required to be re-examined for its use in such an increasing demand. It’s commonly accepted that a new generation of device should put economic, environmental, simple and practical considerations into its design concept. This becomes the main purpose of this study to modify an old-fashioned stream gauge to a better device, named as Double-Tube Flood Mark (DTFM) stream gauge. A number of DTFM stream gauges were installed in the low-lying plains to experience floods for recording their flood heights as a measure of flooded areas. For a comparative purpose, we set up the electronic stream gauges of the stilling well, which measured the height of a float in a hole dug alongside a stream channel. In addition, we also used other types of stream gauge include the pressure transducer, which inferred the depth of water in a stilling well by measuring the pressure of the column of water inside. The gage height values, taken at regular intervals, were recorded by depending on the technology--transmitted electronically to the dedicated databases. The verification showed a satisfactory result as expected. As a general conclusion, the field installment of a DTFM steam gauge is easy and fast. In the mean time, the cheap cost largely increases its placement at all kinds of possible locations to provide high accuracy of flood measures for the calibration of sophisticated hydraulic modeling.
Establishment of Exhaust Muffler Comprehensive Evaluation System and Muffler Performance Optimization
Authors: Shen Hui , Huang Hua , Chen Zhen Bin
Published: June 2012

This paper does some researches on flow and noise of one exhaust muffler, in order to make its comprehensive performance better. In the process, a simulation model of gasoline engine and a muffler comprehensive evaluation system are established. Simulation computation shows that the best optimization scheme improves muffler’s comprehensive performance by 12.5%, proving this evaluation system has theoretical significance and engineering practical value.
Research on Interventional Variant Design
Authors: Tang Lin Xin , Qi Cong Qian , Zhou Xiao Qing
Published: June 2012

Interventional variant design and its supporting technology are proposed. It was discussed how to establish variant design correlative model and operate node of variant design correlative model. A prototype system was given that support the interventional variant design pattern.
Fatigue Life Analysis of the Basketball Wheelchair Based on Virtual Prototype Technology
Authors: Lei Lei , Shi Xiao Chun , Guan Tian Min
Published: June 2012

In this paper, we use the virtual prototype technology in combination with fatigue life analysis software to analyze the fatigue life of the basketball wheelchair. Through the analysis, we judged the weakest links which influences the fatigue life in the wheelchair structural design. Research results have the vital significance for improving the performance of the basketball wheelchair and the development level of sports.
Study of MoS2-Ti Composite Coatings Applied in Precision Ball Bearings
Authors: Zhou Hui , Zheng Jun , Hu Ji Xing , Sang Rui Peng , Wan Zhi Hua
Published: June 2012

708C Ball bearings were made of 9Cr18 steel which had precision of class 4, MoS2-Ti composite coatings were deposited on inner and outer races of ball bearings by unbalanced magnetron sputtering system, and bearing cages were made of PTFE-based self-lubricating polymers. Bearing’s tribological torques as a function of storage time in high humidity environment were studied by using LHU-2 thermal & humidity test chamber and Bearing 2000 torque measurement device. Developing bearing vacuum performance test rig to research bearing’s torque as a function of running time, bearings were dismantled after test and using XPS to analyze the surfaces of bearing’s races and balls. The results show that storied in the environment of 30°C, 85% RH, bearing’s running torques increased proportionally as the storage time went on. When run-in the bearings which were storied for 440 days, the start and average running torques of bearings could come back to the level which was the same as the test start, but the fluctuation of bearing’s average running torque increased. Running in one direction at the speed of 650 r/min, in vacuum environment (~10-4Pa) and ambient temperature, tested bearings showed good running performance with low friction torque varied only between 1g·cm~2 g·cm until to the test ended at 1.872×108 revolutions. XPS analysis showed that a stable and sustainable solid lubrication system was established among bearing’s races, balls and cages.
Research of Technology and Application of MDO Development
Authors: Zhao Yun Peng , Li Nan
Published: June 2012

In west DEMS areas of aerospace, MDO (Multidisciplinary Design Optimization) was the latest and most active design methods in recent years. Its main thinking is that: using DCNT (Distributed Computer Network Technology) to integrate knowledge of all subjects; using effective design optimization strategy to organize and manage of the design process. Its objective is to get the overall optimal solution by using the interaction and synergy between all subjections; to shorten the cycle by implementing of the parallel design. So that the developed the product would be more competitive. This thesis researched MDO development situation of home and aboard from three parts: Techniques and Methods、Integrated Framework software and Application for getting some inspiration how to research MDO now.
The Optimization of Grasping Ability for Three-Fingered Flexible Fixture
Authors: Li Bin , Yin Shi Rong , Luo Tian Hong , Li De Shan
Published: June 2012

By means of analyzing the structure kinematic of the three-fingered flexible fixture, the optimization method of the grasping ability of the flexible fixture was proposed. The best configuration was attained on the basis of expressing the contact force as a general solution. And then, the grasping force was optimized by converting it into the optimization of grasping torque. Not only was the optimization of the grasping ability realized, but also the relative carrying capacity of the fixture was improved. The feasibility of the method was verified by calculating the example. This method provides theory basises for the further research on the intelligence control of this sort of flexible fixture.
Design of the Control System for SBR Sewage Treatment Based on PLC and MCGS
Authors: Zhang Jie
Published: June 2012

This paper mainly studies the SBR technology of the automatic control system for the inner structure, main characteristics, control laws and design method. Control system adopt the open field bus control structure, Yanhua industrial computer as main PC responsible for management, Siemens S7-200 PLC as Hypogynies control. executive agencies responsible for enforcing the command of the PLC to control the parameters; The MCGS software was used for control for system real-time monitoring. The control system has certain theoretical meaning and practical value for powerful features, reliable performance and convenient operation.
Automatic Registration Based on Covariance Matrix Eigenvector Direction of Feature Point
Authors: Fan Li Hua , Chen Qi , Xie Bao Ling , Liu Bo
Published: June 2012

A number of range images taken from different views to be merged to construct an entire 3D model are a common problem which is called registration in RE. The enormous computational cost is required, because this process is usually repeated on searching optimal rigid body coordinate transformation parameters and evaluated in a statistical error distance between two data. This paper proposes a new registration method based on the covariance matrix eigenvector direction of feature point. First, a very fast feature extraction method is presented. Then, covariance matrix eigenvector direction of feature points and those neighborhood points are calculated. Finally, an initial estimate for relative rigid-body transform can be realized, matching these eigenvector directions using an approach of Hough transform. Experimental results of 3D images taken by laser scanner are carried out to compare the convergence and registration error. The proposed registration approach can realize automatic registration without any assumptions about their initial positions and overcome the problems of traditional ICP in low overlapping and bad initial estimate.
Force Implementation of Luffing Mechanism of Jib Type Crane with Back-Rocker Driving
Authors: Li Ke Qin , Li Jun Ning
Published: June 2012

There are great differences in outward appearance, geometric shape, luffing performance between jib type crane with back-rocker driving and normal double-link type crane. Jib type crane with back-rocker driving has some advantages, i.e. lower centre of weight, practical and reasonable structure, strongly anti-wind and easy operation, upwarp of flying jib invariably. Based on inverse design and principle of mechanics, force analysis and luffing moment of luffing mechanism of jib type crane with back-rocker driving is researched and solved, implemented on MATLAB.
The Optimization Design of Overhead Traveling Crane's Box Girder
Authors: Tian Guo Fu , Zhang Shi Zhou , Sun Shu Hui
Published: June 2012

The box girder overhead traveling crane is one kind of hoisting machine, which is widely used in factories, mines and other enterprises. Its main structure is box girder, which accounted for the largest proportion of the whole weight. In order to improve the performance of the whole machine and reduce energy consumption, an optimization model is established on the basis of the whole stress analysis and it was applied to make specific optimization design.
Ecological Design Technology of WU Sha-River Regulation in Nanchang City
Authors: Chen Jing , Xiao Li Ying
Published: June 2012

Through analyzing several problems existing in Wusha-river channel at present, this paper designs general scheme of Wusha-river regulation works based on theory method of eco-hydraulic engineering. This ecological design mainly works in the internal of River channel, slopes and banks protection of embankment, diversion damsand riverine wetlands, and it can provide certain experiences for the using of eco-hydraulic engineering in river regulation works.
Research on Energy Consumption for Improving Light Vehicle Manufacturing Technology of Automotive Industry in China
Authors: Ma Fang , Chen Li Hua , Luo Yi Ping
Published: June 2012

It has become the theme of the times to save energy and protect environment, since the environment has been deteriorating and energy crisis has been increasingly nervous. The trend is the development of automotive lightweight direction, because of the close relationship among energy consumption and vehicle manufacturing and using cost. In this article, the automotive industry to use the material is still main traditional material of iron and steel high-energy through a statistical analysis of the automotive industry energy consumption. Furthermore, the method was described that the use of lightweight environmentally friendly materials to promote lightweight manufacturing technology in the automotive industry based on the statistical analysis of the automotive industry energy consumption. A new era is coming with automotive materials development. The research and application of lightweight materials on new car will become the focus of future vehicle development.
Virtual 3D Ink-Jet Printing System for Heterogeneous Object
Authors: Zang Ting , Qu Yun Xia , Jia Li Dan , Xu An Ping
Published: June 2012

3D ink-jet printing is regarded as the ideal manufacturing technology for Heterogeneous Object(HO) materials, but this technology is much restricted by the high requirement on idealized materials, high forming cost and imperfect modeling and layering technology for HO. To solve these problems, a virtual 3D ink-jet printing system for simulation of HO fabrication is developed in this paper. Since the physical model is replaced by the digital model, the potential risk will be avoided effectively and it will result in higher product quality and much lower manufacturing cost. Finally, examples of the virtual formed prototypes are given.
Statistical Design of Control Charts with Two Pairs of Control Limits
Authors: Guo Bao Cai
Published: June 2012

Aiming to the production processes which require two kinds of restoration procedures, this paper describes charts with two pairs of control limits. Different restoration procedures depend on where a sample mean is. We study the positions of these control limits and statistical properties of these charts. The conclusion is that these charts have the same average run length as the traditional Shewhart charts for in-control process or out-of-control process. However they can distinguish between the big shift sizes and the small shift sizes of the process mean effectively.
Study on Reliability of Mechanical Systems Based on Petri Nets and Failure Dependence
Authors: Hu Qi Guo
Published: June 2012

Mechanical systems is vulnerable to be influenced of its structure and human factors for its subsystems, components and the complex relationship between each unit, causing the mechanical systems to be failed, which severely affects the reliability of the mechanical systems. based on Petri nets models of mechanical systems analysis, from safety, intermediate and failure three aspects, 3-level working model of “safety-intermediate-failure” is introduced to reflect the reliability (functioning fully) of mechanical systems, intermediary transition between reliable and failure, failure (can not work). Through using the union and intersection operation of stochastic event, and considering the different values of the related failure parameters among basic events which impacts on the reliability of mechanical system, eventually the calculation of mechanical system reliability vector with the intermediate state is established.
A Novel Polyethersulfone Flat Sheet Membrane Prepared from a Lower Critical Solution Temperature System
Authors: Diao Jing , Xu Jian Feng , Li Song Tao , Cao Xiao Hui , Liu Chun Yi , He Chun Ju
Published: June 2012

Polyethersulfone (PES) flat sheet membranes were prepared via phase inversion induced by immersion precipitation from a novel lower critical solution temperature (LCST) system containing PES, 1-butanol and N, N-dimethylacetamide. And the effect of coagulation bath temperature on the properties and structure of PES membranes were investigated. The results show that the pure water flux increases and the tensile strength decreases as the coagulation temperature increases form 20°C to 50°C. Besides, the SEM images shows that all of the membranes prepared from a LCST system at different CBT own sponge-like structures.
Development and Application of Repairing and Protection Technologies for Desulfurization Pump
Authors: Li Tai Jiang , Li Wei , Li Yong , Liu Fu Guang , Liu Li Ying , Wang Bo
Published: June 2012

Gypsum and slurry with high content of Cl- lead to the damage of desulfurization pump caused by erosion and corrosion. Gas tungsten arc welding (GTAW) and shield metal arc welding (SMAW) were employed to develop weld repairing technology. High-velocity oxygen fuel (HVOF) spraying was employed to prepare NiCr cermet coating and WC cermet coating against erosion and corrosion. Microstructures and mechanical properties of the weld and the protective coatings were tested. The mechanical properties of the weld joints with duplex microstructure were in accordance with related standards. The technology of HVOF sprayed NiCr cermet coating was selected to prolong the service lifetime and was applied on the pump casing and impeller repaired by using the weld repairing procedures developed in this study. The integrity of the pump parts after 30 months in-field service confirmed the reliability of the repairing technology and the protection technology.
The Design of the Engine for Saving Energy
Authors: Zhong Yu Hua , Chen Xiao Shan
Published: June 2012

This paper completes the camshaft optimization design of curve by digital modeling and simulating of the engine using the GT-POWER and Flow simulation; and realizes the reform of the combustion chamber and the regulation of compress ratio, and successfully verify the work feasibility which is full use the power stroke for the top two stroke engine exhaust and the effect of energy saving and emission reduction by using this method that the reform of and combustion chamber replaceable piston top experiment method, on the piston top to have specific shape and quantitative embedded in the size of the piston top. And it explores a set of method that can make machining camshaft quickly and accurately, and reduces the time and the cost of the CAM processing effectively.
The Structural Design and Check up Strength on Underwater Propulsion Manipulator
Authors: Lai Hui Fen , Xiao Wu Zheng
Published: June 2012

This document explains and demonstrates how to design the structure and analysis its strength for the underwater propulsion manipulator. Through comparison, the structural design program of the manipulator is determined, With the solidworks software, its strength is checked up, and the forces are analyzed by the dynamic simulation solidworks.
Effects of Continuous Rolling Speed Change Rates on Geometric Dimension between Two Racks when Rolling Rail by Universal Pass
Authors: Liu Yu Yan , Wang Yang , Zhu Hu , Chen Lin
Published: June 2012

This paper used the finite element software to simulate the process of the heavy rail rolling deformation between the UR and ER racks. It studied on the stress distribution law of the universal mill pass, the relationship between the universal mill unbalanced rates of velocity and tension changes of the rack, effect of the universal mill unbalanced rates of velocity on the change of the rolling geometric dimensions caused by the unbalanced rates of velocity. The research can guide the adjustment of the dimensional accuracy of the rail’s universal rolling.
Design of an Automatic Feeding Device for Melting Tin-Ingot
Authors: Sun Yin Da , Zhou Bai Qing , Xu Wen Qin
Published: June 2012

The paper covers an automatic feeding device for melting tin-ingot, which has advantages of improving working conditions, high automation, stable operation, good reliability, and thus has more applied value.
The Finite Element Analysis and Optimization of Subway Steel Structure Work Platform Based on Workbench and Pro/E in a Subway
Authors: Li Ya , Ren Guang Sheng
Published: June 2012

The static and stability analysis of steel structure were taken according to steel structure work platform’s requirements and structural characteristics in a subway parking space by using the software model which is established by Pro/E software and implanted into the finite element analysis software ANSYS Workbench. The maximum deformation and stress in design load of the steel structure were calculated and the linear stress strength analysis of the key parts was carried out, also both the analysis and testing of the supporting pillar’s stability were performed. The results show that the structure model established by Pro/E and the calculation method are reasonable. Moreover, the calculation results are of high accuracy. The profile size is properly chosen and the structure bearing capacity and deformation meet the design requirements.
Research and Implementation of Product Lifecycle Management Platform Based on Teamcenter
Authors: Zhang Yu , Cai Hua
Published: June 2012

Product lifecycle management (PLM) is a kind of solution, software technology and a business strategy, which play an indispensable role in the enterprise informatization and network management. In this paper, Teamcenter management software of SIEMENS is applied as basic platform of implementing PLM project, the fundamental network structure and main functions and solutions are introduced, furthermore, it also mainly researches the implementation strategies and process of PLM project and analyses the application values and advantages of PLM project for the enterprises.
Functional Structure Design of English Learning Machine Based on Innovative Cognition
Authors: Chen Ke
Published: June 2012

In terms of cognitive psychology and innovative psychology, this paper establishes the innovative cognitive process of English learning from input of information to output of language acquisition result. Then combined with the theory of cognitive linguistics, the paper analyzes the main impact that innovative cognition produced on English learning process, and proposes the related English learning strategies. Based on the above theory, functional structure of English learning machine, which is made up of the man-machine interaction interface, the core function layer and the hardware base layer, is presented. The method proposed here should be helpful for further research on the model of English learning machine.
Investigation and Realization of Integration Method for PDM and ERP Based on XML Data Sharing in Procreation of Electric Motor
Authors: Wan Su Wen
Published: June 2012

Combining with one instance in production of electric motor, the integration mode and content between the systems of the PDM and ERP were researched, and the integration solutions were provided by the XML files. the XML files which could shield the different structures of the application systems were used as the intermediate format of transforming integrated. An integration model and achievement way between the integrating systems of the PDM and ERP were proposed and the simulation model of the production of electric motor was set based on witness. The article proposed a referential mode for the integration between PDM and ERP of enterprises by BOM.
A Disquisition on the Idea and Approaches to Green Design Based on Sustainable Development
Authors: Wang Qi
Published: June 2012

In recent years, green design has become a trend of modern design in regard to product, packaging and material which represents a totally new idea, that is, design is not only meant to decorate, beautify and perfect environment, it is supposed to take up the role of social responsibility and moral value. This paper explores the idea of green design and the approaches applied in modern design, suggesting that green design is not only a new way of product design, while it also meets the need of times and sustainable development.
Design Scheme for New Workover Mechanical System
Authors: Wang Yan , Chang Yu Lian , Gao Sheng , Wang Jing
Published: June 2012

In workover operation, conventional way makes the process complex, labor intensity high and operating environment hostile. For solving the problem, the new scheme for workover mechanical system was put forward. Hanger was removed in the system. We can execute tube movement with macro/micro mechanical arm and achieve sending down and lifting pipe with supporting mechanical hands. It is designed for the first time in china.
Study on Reliability Appraisal and Strengthening and Repairing of Modern Architecture
Authors: Yang Yan Min , Xie Xiao Juan
Published: June 2012

Tsarist Russia consulate, modern architecture, in Changchun City, is the protection project of history relic, the reliability of the main structure of the building is appraised to ensure it reliability and safety, and using proper repairing and strengthening methods under the conditions of keeping the original architectural style, which require a higher construction technology, at the same time the strengthening design must meet the current standards. By comparing the main structure before and after reinforcement, it not only achieve the original intention of protecting the cultural relics, but also meet the functional requirements, which provide the references for the strengthening and repairing of modern architecture.
Study on the Organization Model for the Design Process Modular of Complex Mechanical Product
Authors: Zheng Jun
Published: June 2012

In order to provide knowledge service more efficiently for complex mechanical product design, a knowledge organization model for complex mechanical product design knowledge based on the process modular approach was proposed. First, a general form, the knowledge instance, would be used to represent all forms of the knowledge for complex mechanical product design; then, based on the contents and features of the knowledge instances and the semantic relations in the domain ontology, the special collections of the knowledge instances which have related features would be composed to knowledge modules, and knowledge modules would be organized as a DAG(directed acyclic graph). The complex mechanical product design knowledge could be efficiently and completely queried based-on semantic according to the logical relationships expressed in the DAG.
Effect of Vehicle Seat on Neck Injury in Rear Impact
Authors: Teng Tso Liang , Liang Cho Chung , Huang Hung Yu , Chen You Lin
Published: June 2012

Seat is a main part of vehicle to contact with occupant in rear impact and chiefly concern with the severity of neck injuries. Therefore, improvement in seat design can effectively reduce the neck injuries of occupant. For designing an effective vehicle seat to protect occupant, this study develops the numerical model of sled test by using MADYMO software and discusses the relevance between the seat parameters and occupant’s neck based on the validated numerical model. The seat parameters include the stiffness of seat angle device, seat friction and angle of head restraint. The discussion of influencing factors of seat can be referred for designing a safety seat. The occupant neck then can be protected in rear impact accidents.
Design of Locomotive Wiper Fuzzy Control System
Authors: Huang Xiao Feng , Long Yong Hong , He Li , Ou Yang Fu
Published: June 2012

In order to optimize synchronization of wiper arm, a locomotive wiper controller of PWM and Fuzzy PID controller are proposed. The PWM controller is mainly designed of input control circuit, a central control unit, DC wiper motor pulse width modulation control and drive circuit, the motor stops the braking circuit, single-speed wiper motor of permanent magnet DC, etc. It can realize the high speed, low speed, intermission, stop function of wiper. The controller has values of stable performance, low noise, simple structure, etc. In locomotive wiper controller, Fuzzy PID controller combines the advantages of Fuzzy controller and PID controller, that it can achieve fast response, small overshoot. Fuzzy PID can also ensure the steady-state accuracy of the system, and the control performance is better than PID control and fuzzy control.
The Fabrication of La0.9Sr0.1CoO3 Thin Films and its LITV Effect Applications
Authors: Wei Xiao Fei , Zhang Li Sheng , Wang Pei Jie , Fang Yan
Published: June 2012

High quality La0.9Sr0.1CoO3 (LSCO) thin ﬁlms grown on 5° vicinal cut LaAlO3 (LAO) (100) substrates were deposited by pulse laser deposition (PLD). Laser induced thermoelectric voltage (LITV) was detected instantly with fast response time and extremely narrow full width at half maximum (FWHM) when 248 nm pulse laser radiated on the surface of LSCO thin films. These merits of LSCO thin films make it one ideal material to fabricate light detectors and photosensitive device. With the increase of pulse laser energy, the peak voltages increase linearly, so LSCO thin films can be used to make high precision laser energy/power meter.