bluuebunny/crossref_metadata_2025 huggingface dataset:
Modeling of Iron Matrix Composite Based on In Situ and Laser Coating Technology and Optimization of Parameters
Authors: Yang Lei , Chen Ying Ying , Li Wen Ge , Sun Xiao Yan
Published: November 2010

The preparation of reinforced metal matrix composites used by the method of in-situ and laser cladding has become one of the interesting topics in the metal matrix composite materials. This method is adopted here to prepare the reinforced iron matrix exterior composites, and the critical task is to obtain the optimized technique parameters. The optimal process of manufacturing composite is traditionally defined via experimental methods of orthogonal arrays design, which is costly and can’t get the exact parameters. Hence, we firstly use the artificial neural network to fit the relationship between the performances of the composite and the parameters so as to construct the model of the process. And the parameters are optimized by genetic algorithm. The results further verified that the method in this paper is effective.
Mortars with Partially Oxidized Waste Rubber Crumbs
Authors: Chou Liang Hsing
Published: November 2010

Waste rubber crumbs were partially oxidized and used as additives of mortars and have shown promising results in this study. SEM was used to observe the microstructure of the interfacial surfaces between cement hydration products (C-S-H) and rubber crumbs. SEM imagines showed that, in the interfacial zone, mortars with partially oxidized rubber crumbs had more uniform C-S-H distribution than that of mortars with as- received rubber crumbs. The compressive, flexural, and tensile strengths of mortars that included partially oxidized rubber crumbs also increased significantly.
Growth and Hydrogen Production Characteristics of HPB B49
Authors: Yue Li Ran , Li Yong Feng , Ren Nan Qi , Hui Yong Ming , Li Jian Zheng
Published: November 2010

Biohydrogen production technology by fermentation uses biomass as raw materials to produce the renewable hydrogen energy. H2-producing bacteria(HPB) plays an important part in Biohydrogen production technology by fermentation。In this paper study on growth and Hydrogen production characteristics of HPB B49.Research has shown:⑴.Glucose concentration 10 g/L was the fittest substrate concentration of HPB B49 growth and hydrogen production;⑵Enzyme system growth of hydrogen-producing bacterium B49 at different growth phases influences hydrogen production;.⑶35 was the fittest temperature for cell growth and hydrogen production;⑷The fittest growth pH for hydrogen producing bacterium B49 was 4.5, while that for cell hydrogen production was 4.0;(5). This bacterium strain could be used as engineering bacterium in the different substrate hydrogen-producing experiments.
Simulation on Temperature Distribution of Composite Bridge Deck Plate
Authors: Chen Bo , Zheng Jin , Wang Jian Ping
Published: November 2010

The evaluation on time-varying temperature distribution of composite deck plates of long span bridge is carried out in this study through an integration of knowledge in material science and structural analysis. Two-dimensional heat transfer models are utilized to determine the time-dependent temperature distribution of deck plate, deck trough and deck pavement of the bridge. The solar radiation model is utilized to examine the time-varying temperature distribution. Comparison between the analytical results and the field measurement shows similar properties, in terms of temperature distribution within the deck segment. The made observations demonstrate that the simulated temperature variation of the deck plate based on the solar radiation model agrees well with measurement results.
Kinematic Study on a New Coil Winder of RSPC Type
Authors: Hsieh Wen Hsiang , Tsai Chia Heng
Published: November 2010

The objective of this paper aims at investigating the feasibility of new coil winders with a spatial RSPC mechanism by conducting kinematic simulation. First, the design requirements and design constraints are specified based on the kinematics characteristic of coil winders. Then, the (4, 4) kinematic chains are obtained by number synthesis, and the atlas of feasible chains is generated. After that, the atlas of specialized feasible chains is found. Finally, new designs are obtained through the particularization process. In addition, an illustrated example of the RSPC mechanismselected from the new designs is given, and its feasibility is verified by performing kinematic simulation using ADAMS software. The result shows that it can meet the motion requirement of coil winders.
Research and Implementations of the IEEE 1588 Precision Time Protocol Based on ARM-Linux
Authors: Yang Guang You , Ye Zhi Jian , Zhang Shuang Qing , Xu Wan
Published: November 2010

The clock synchronization is the key technology in distributed control system. This paper investigates the method to adjust computer clock frequency and time in embedded control system based on Ethernet. This paper also analyses the basic working principle of the IEEE 1588 Precision Time Protocol. In particular, it outlines the working principle of the free PTPd that is the software only implementations of the IEEE 1588 Precision Time Protocol. In the ARM-Linux environment, it presents a clock synchronization method to achieve high precise clock synchronization in distributed control system using PTPd. The results indicate that it is able to synchronize distributed clocks with the accuracy less than 500 microseconds using PTPd without the support of specialized hardware.
Process Modeling for Production System Based on Matrix Mapping
Authors: Li Meng Qi , Li Dong Ying
Published: November 2010

In order to reduce the work of repeated nad iterative of process model for manufacturing system, the paper proposed the establishment of three-dimensional "product - process - property" of the modeling methods with matrix mapping technology and mapped products, function, performance, process to model of production system according to the steps. Production system modeling of light-box as a case to detail description of production systems and process modeling. The modeling method with convenience, comprehensive, integrated, inheritable, and sometimes with large amount of calculation.
Blocking Partition Manufacturing of Complex Parts
Authors: Cheng Xiao Min , Mei Zhu , Shen Jian Yu , Liu Meng
Published: November 2010

The manufacture of complex components was always the difficult point in manufacturing field. According to superposition principle, the manufacture of complex components could accomplish by geometry division, machining and assembling. A complex component was divided into several simple portions based on its geometry characteristics, to ensure relative position among each subassembly, the unilateral centricity method was adopted to fix the reference point, anchor surface and anchor sign and to complete the design of anchor structure. As soon as the design of assembly structure was completed, the NC processes were generated and the assembly structure would be scrabbled up immediately. In the end, an instance of profile bracket of human’s ear gave credence to the feasibility of manufacture of complex components by segmental manufacturing.
Theory and Application of Modular Manufacturing for Complex Product System
Authors: Li Meng Qi , Li Dong Ying
Published: November 2010

To solve the rapidly increasing of complexity and uncertainty and inappropriate solving space of innovative with the complex product using the traditional combination manufacturing mode, this paper proposed modular manufacturing theory by separating the need of function, performance, structure, and size in the manufacturing process into the external modules and internal modules. The theory of generalize modularize decomposition, modules solving and optimize, modularize integrated are systematical represented. To reduce the complexity and uncertainty by the way of separate the business with internal model and external model. An example of installed and calibrated system of Laser device is given to illustrate the theory and methodology of modular manufacturing.
Study on Manufacture Technology for Enhancing the Life of Mining Flat Type Chain Connector Units
Authors: Mao Jun , Li Wei Kang , Li Jian Gang
Published: November 2010

To enhance the structure strength and working life of the existing ladder-type chain connector, and chain connector productivity and manufacture craftwork. The ANSYS finite element software is utilized to simulate contact non-linear finite element analysis of ladder type chain connector. And the static and dynamic experiments are carried on several samples. Finite element simulation results show that the main part of stress concentration is in teeth roots; experiments results show that the teeth roots are the fragile parts in the chain connector, the results of finite element analysis is conformed to the results of the experiments, thus that the ANSYS finite element software is utilized to simulate contact non-linear finite element analysis of chain connector is reasonable. Because of the shortcoming of straight tooth chain connector, then promoted a chain connector of cambered surface tooth structure. Through the analysis, it shows that cambered surface can augment the contact areas in teeth, and prevent partial loading in teeth meshing. When chain connector manufactured, clamping tongs are quite complex, but the petal-type clamps structures are adopted, that can carry out volume-producing, thereby, and the productivity and processing precision are improved.
Optimization Design of Composite Wing Structure of a Minitype Unmanned Aerial Vehicle
Authors: Zhang Yan , Xiong Fen Fen , Yang Shu Xing , Mei Xiao Ning
Published: November 2010

The application of advanced composites on the aerocraft structure can significantly reduce the weight, and improve the aerodynamic and flight performances. In this work, optimization design of a composite wing structure of a minitype unmanned aerial vehicle (UAV) is implemented. The parametric finite element model is established using parametric modeling technique for stress and stain analysis. The global optimal solution is guaranteed by the proposed two-step optimization search strategy combing genetic algorithm (GA) and sequential quadratic programming (SQP).
Influence of Carbon Content on the Qualities of Oxy-Fuel Float Glass
Authors: Liu Xiao Qing , Xie Jun Lin
Published: November 2010

To optimize production technology of oxy-fuel float glass, a series of float glass with lower sulphate contents and 1%~5% carbon contents in glass batch were prepared under simulated oxy-fuel melting conditions. Infrared spectroscopy，thermal dilatometer and microscope were used to study water content and its state in glass melts, the change of coefficient of thermal expansion of glass, the glass softening temperature and transition temperature, and the number of bubbles in glass, respectively. The results show that the change of carbon content will slightly changes the water content, thermo properties of glass and the number of bubbles in glass. With the increase of carbon content, the coefficient of thermal expansion and the water content of glass generally decrease, while the number of bubbles, the softening temperature and the glass transition temperature increase. When the content of sulphate is 2%, the glass with 2% carbon content has the biggest water content and the best fining effect.
Innovation and New Product Development Management
Authors: Miao Yu Jun , Chen Hong Mei
Published: November 2010

The new product development process of enterprises can not be separated from innovation, new product development process of enterprise need for effective management. Consumer tastes, competition and rapid technological change, businesses must continue to develop new products and services to meet consumer demand. New product development strategy of many strategies to be adopted by enterprises in accordance with the actual situation, according to the market environment and each practicality of the strategy, operational, and other serious, careful choices. In this article, it expounds the meaning of innovation and new product development, focuses on analyzing the new product development in the whole process of how to innovate and discussing how the use of innovative new product development theory of management and new product development strategy.
A New Scheme of Shell Model Potential for Hydrogen System
Authors: Wang Xun , Sun Hong , Wang Yue Hua , Ma Zhen Ning , Wang Qing Jie , Wang Jing Yu , Shan Ya Na , Li Xing , Zhai Zhong Hai , Li Qiang , Yu Zhi Qing
Published: November 2010

The shell model (SM) can simulate dipole and other properties concerning electrons. In this paper, an new scheme of SM potential is developed. Unlike the traditional SM, there are no harmonic spring between core and shell, and the potential functions are Coulomb potential multiplied by trigonometric function. The parameters of SM for hydrogen system were fitted by electronic structure data, which is from quantum chemistry ab initio calculation of H, + 2 H and 2 H . And the potential was examined by calculating the most stable structure of H2 and + 2 H by geometry optimization globally, which is agree with the ab initio calculation results. Furthermore, even the energy level of H atom can be calculated by this scheme SM potential, but the reasonable results can not obtained.
Recycling of Coal Fly Ash for Fabrication of Porous Mullite Composite
Authors: Lee J.M. , Yang T.Y. , Yoon S.Y. , Kim B.K. , Park H.C.
Published: November 2010

Unidirectional pore structured porous mullite composite has been fabricated using a TBA-based freeze-gelcasting of coal fly ash/alumina slurries. After sintering at 1300-1500o C, the shrinkage, apparent porosity and compressive strength of the resulting porous composites were investigated. After sintering at 1500o C, the composite showed the maximum compressive strength of ~51 MPa and the minimum apparent porosity of ~64%.
Optimization of the Multi-Layer Die for Support Shaft
Authors: Huang Xiao Hui , Zhang Min , Wang Yao , Zhao Xin Hai
Published: November 2010

In the forging sequences for support shaft, the female die in the process of backward extrusion suffered a wicked stress condition, which was responsible for a short service life. The objective of this paper is to improve the stress condition through optimizing the parameters of multi-layer die, such as the sizes stress rings and shrink-fits. The process of backward extrusion was simulated by DEFORMTM package, and then the node forces on the boundary between workpiece and die were translated into ANSYS. The ANSYS module (APDL) was applied to seek the optimal set of parameters based on the failures of the stress rings in multi-layer die at the same time. In this optimization, a two- and a three-layer dies were taken into consideration for. The optimized parameters will be used as a guideline for the practice application and the strategy used in this study can be extended to the other processes for the support shaft and other extruded products.
Influence of Electromagnetic Field on the Solidification Structure of C90500 Tin Bronze
Authors: Li Bao Mian , Zhang Hai Tao , Cui Jian Zhong
Published: November 2010

The effect of electromagnetic field on the solidification structure of C90500 tin bronze (Cu-10%Sn-2%Zn in mass%) had been investigated in this paper. The results show that applying electromagnetic field during the solidification of C90500 tin bronze can refine macrostructure and δ phase, promote columnar-to-equiaxed transition, inhibit inverse segregation of Sn, and make the dendrite degenerate. The width of eutectoid structure (α-Cu+δ) becomes smaller, and the morphology of eutectoid δ changes from coarse acicular and massive shape to fine dotlike shape. The above mentioned effects become more obvious with the increasing of current intensity.
Simulation on Extrusion Comminution Model of Roller Press
Authors: Cheng Xiang Wen , Liu Jinchao , Ding Qi Zhi , Song Li Ming , Wang Zhan Lin
Published: November 2010

How to predict the relationship among particle size and among product size, to establish the relationship between the granularity and working parameters in the process of grinding and to determine the optimum operating parameters. With proposing BS squeeze crush model by L. Bass and the idea of roll surface division as the material uneven extrusion force are adopted. Based on field experiments the experimental data is analyzed, the select function and the breakage functions are fitted with MATLAB software, and obtaining their model. The comminution model is determined by the roller division. We obtain the model parameter through the experimental data. Through model analysis shows: the relationship between particle breakage and energy absorption, namely the smaller size of the same power, the lower broken; the breakage diminishes with the decrease of particle size ratio and it will be tending to a small constant when the smaller particle size ratio. The breakage functions rapidly decrease within ratio of between 0.2-0.7. This shows: the energy consumption will rapidly increase when the particle size of less than 0.2 in broken; the selection diminish with the decrease of particle size. Pressure (8-9MPa) should be the most appropriate value.
Development of Diagnosis System for Machine Tool Shaft Inspection
Authors: Hsieh Nan Kai , Lin Wei Yen , Young Hong Tsu
Published: November 2010

Aiming at reducing cost and time of repair, condition-based shaft faults diagnosis is considered an efficient strategy for machine tool community. While the shaft with faults is operating, its vibration signals normally indicate nonlinear and non-stationary characteristics but Fourier-based approaches have shown limitations for handling this kind of signals. The methodology proposed in this research is to extract the features from shaft faults related vibration signals, from which the corresponding fault condition is then effectively identified. With an incorporation of empirical mode decomposition (EMD) method, the model applied in this research embraces some characteristics, like zero-crossing rate and energy, of intrinsic mode functions (IMFs) to represent the feature of the shaft condition.
CAD/CAE Collaborative Design of Auto Panel Die Surface
Authors: Qiu Xiao Gang , Huang Yue Dong
Published: November 2010

The technology that CAD/CAE collaborative design of auto panel die surfaces was introduced. Pro/E and Dynaform adopted, the stamping die surfaces of an auto coping were optimally designed. Based on evaluation of the performing result, the strategy how to modify the die corner and optimize the geometry of blank was given, the invalid problems such as wrinkling and cracking were disposed, which efficiently directed the die designing and greatly improved the stamping conditions. The concept, CAD/CAE collaborative design, provided theoretical guide for optimal design of stamping die and stamping craft in auto panel.
The Application Research on Backfill Mining Technology of Gangue for Coal Pillar Mining in Xingtai Mining Village
Authors: Ma Li , Ding Zi Wei
Published: November 2010

Gangue and fly ash combined mining technology is the direct filling of the gangue and fly ash to the surface by the feed delivered to the face well, and then filling is in gob areas, while ensuring under the premise of the safe use of surface buildings subjects to the normal maximum level for achieving Coal Mining under the buildings. In the paper, gangue and fly ash on the exploitation of the feed system were designed for filling and compaction equipment, the hydraulic mining was developed on the backfill mining, the conveyor was modified, and the gangue and fly ash mining technology were designed. As the result, the filling rate and surface subsidence was controlled effectively, the service life of the mine was extended, and the good economic and social benefits were achieved.
Synthesis and Characterization of the Ba5(PxAs1-xO4)3Cl Solid Solutions
Authors: Wei Cai Chun , Pan Yan , Zhu Yi Nian , Zhang Zong Lan , Liu Hui Li , Zhu Zong Qiang
Published: November 2010

A series of arsenate substituted chlorapatite was directly prepared through aqueous precipitation method. Characterization studies from elemental analysis, XRD, FT-IR spectra and SEM confirmed the forming of the arsenate/phosphate chlorapatite solid solutions. The XRD analysis indicated the typical solid solution phase of the apatite-type structure. In FT-IR spectra, the area of the phosphate peak was gradually suppressed and the arsenate peak increased as the proportion of the arsenate increased. The solids with As/(As+P) molar ratio of 0.49~1.0 were needle-like crystals; those with As/(As+P) molar ratio <0.19 were large tabular.
A New Method to Analysis the Co-Sintering of NiO/YSZ-YSZ Coating
Authors: Chang Qi Bing , Wang Xia , Zhou Jian Er , Wang Yong Qing , Meng Guang Yao
Published: November 2010

To explain the deformation during the co-sintering of NiO/YSZ-YSZ coating, the sintering shrinkage of NiO, NiO/YSZ and YSZ were measured by dilatometer. The coefficient of deformation variable (CDV, α) is defined to describe the difference of the sintering behaviors between the layers constrained.
Adosorption of Basic Fuchsin onto Xanthoceras Sorbifolia Bunge Crust Activated Carbon Developed by Sodium Hydroxide
Authors: Hao Yi Nan , Wang Xi Ming
Published: November 2010

Xanthoceras Sorbifolia Bunge crust was used as source material to make carbon by chemically impregnated by sodium hydroxide、carbonized at 220°C and activated under the protection of the nitrogen. Experiments were carried out as function of contact time, pH (4-10) and temperature (293,303 and 313K). Adsorption isotherms were modeled with the Langmuir and Freundlich isotherms. Adsorption isotherms of Basic Fuchsin on Xanthoceras Sorbifolia Bunge crust activated carbon are consistent with Langmuir equation. The Langmuir monolayer saturation capacities of BF adsorbed onto activated carbon were 286.545, 303.617 and 323.816 mg/g at 293,303, and 313 K, respectively.and adsorption kinetics were found to conform to the pseudo-second-order kinetics with good correlation.Using the equilibrium concentration contents obtained at different temperatures, various thermodynamic parameters,such as △G,△H and △S, have been calculated. The thermodynamics parameters of system indicated spontaneous and endothermic process.
Dynamic Simulation Analysis of a Cracked Flexible Rotor Supported on Rotor-Rolling Bearing Based on Virtual Prototyping Technology
Authors: Han Tian , Bai Jie , Yin Zhong Jun
Published: November 2010

The complex nonlinear dynamics of a rotor-rolling bearing system with crack is built by dynamic simulation software ADAMS. The transverse vibration response and swing response of rotor are studied on the basis of considering both the nonlinear contact force of rolling bearing and the impact of stiffness caused by crack. Furthermore, the influence factors of transverse vibration response are researched including speed, crack depth, crack angle and eccentricity. The simulation analysis demonstrated that it is an effective method to solve nonlinear dynamics of rotor-rolling bearing system with crack based on virtual prototyping technology. It provides a new method of feasibility study for fault diagnosis in the future.
Study and Preparation of Electrocatalytic Ceramic Membrane Electrode
Authors: Zhang Teng Yun , Shao You Yuan , Chen Jian , Fan Hong Bo
Published: November 2010

The novel electrochemical membrane reactor for wastewater treatment was designed and introduced. As the key part of the electromembrane reactor, the tubular membrane electrode was prepared and researched. The tubular inorganic ceramic membrane was endowed with electroconductivity by the deposition of pyrolytic carbon from propylene by chemical vapor deposition. The electrocatalytic property of the membrane electrode was realized through dip-coating with chloroplatinic acid solution, drying and hydrogen reduction in order that the electrocatalyst of reduced platinum can be supported. The SEM characterization and water flux test of the membrane electrode show that membrane separation and electrocatalysis can be integrated together.
The Study on Multi-Factor Coupling Numerical Simulation for Vehicle Cover Panel Stamping Forming
Authors: Qiu Xiao Gang , Yi Huai An
Published: November 2010

This article uses UG to establish the three-dimensional model for the automobile cover panel parts, and establish a parts technological addendum surface and binder surface. This model has been converted to DYNAFORM, in which the parts finite element model is established. It also uses DYNAFORM software to carry out simulation analysis and orthogonal analysis of the geometric parameters of rib, obtaining the influence rule of the drawbead geometric parameters to drawbead resistance. It has studied the influence of many factors on the parts forming such as blank size, blank holder force(BHF), the material parameter and so on. The result shows that during the process of stamping, the shape and size of blank has played an important role in the sheet flowing; BHF has a great influence upon the wrinkling and cracking of the parts; material parameter, the value of r, mainly affects the drawing deformation while the value of n produces a great impact on the plane strain, bulging deformation. Through optimizing the shape and size of the blank and BHF, it obtains the best material properties parameters to satisfy the parts smooth forming that is: 0.25, 2.15. After the scene stamping production, it confirms the practicality of the optimization solutions.
A Dynamic Assembly Modeling Method for Satellite Final Assembly Sequence Planning
Authors: Zhang Yuan , Zhang Kai Fu , Yu Jian Feng , Zhao Lei
Published: November 2010

To study the effect of assembly process information combining disassemble and assemble on satellite assembly sequence, this paper presents an object-oriented and assembly information integrated model, which is composed of static model and dynamic model. The feasibility determination based on Cut-set theory is presented and the construction algorithm of dynamic model is established by static model, the dynamic assembly model tree is obtained by analyzing in layers and verifying possible states using this algorithm, where the assembly model tree includes all the geometric feasible assembly sequences of satellite. Finally, this modeling method is verified by a satellite product.
Practice and Exploration of Localizing International Cooperation and Exchange of Industrial Design Education
Authors: Fan Jin Song
Published: November 2010

As an important approach of promoting Industrial Design in our country, international Industrial Design exchange activities are carrying out vigorously. With the increasing development of these kinds of communications, it becomes a critical issue that how to effectively and sustainably conduct these international communications to realize the true sense of learning from each other and improving oneself. This paper discusses some ideas on international Industrial Design cooperation and communications based on our own practical experience, and some examples are given.
A Novel Slicing Method for Rapid Forming Based on Welding Arc Deposition
Authors: Zhu Sheng , Liu Jian , Yin Feng Liang , Liang Yuan Yuan
Published: November 2010

Welding arc deposition is a high efficient rapid forming technology which can be used to rapidly form metal functional parts directly. While, Traditional slicing methods in the rapid forming process always produce ‘staircase’ or additional support structure which reduce deposition accuracy and efficiency, bring about the dissipation of materials. Even that it cannot exploit the advantages of welding arc deposition method. This paper proposes a slicing strategy which is suitable for rapid forming based on welding arc deposition. During slicing stage, the CAD model is decomposed into different pieces based on its geometrical feature to make each piece can be deposited in one direction without support structure, and layer thickness is determined according to the height of each sub volume and welding parameter database. A typical part is built with this method. It shows that this method is feasible and high efficient.
Control System for Multifunctional Green Buildings
Authors: Chung Chin Ming , Lin Che Wei , Gu Chia Chen
Published: November 2010

In modern life, factories and household electricity consume the largest amount of electric power, especially in summer. The continuous operation of air-conditioning system increases the heat in the environment and speeds up energy consumption as well. Therefore, in order to promote ecological balance, reduce carbon dioxide emission, and establish no pollution living environment, this study used green energy power generation technology, rainwater collection system, automatic light sensor-controlled curtain, infrared-controlled light, temperature sensor-controlled air-conditioning system, anti-theft system, and smoke-sensing device as effective devices for utilization of green energy. The rainfall collection system can increase the utilization of water resource. The curtain with light sensors, illumination system, and air-conditioning system can effectively save energy. The anti-theft system and smoke sensing device can both ensure the safety of living environment and achieve the objective of energy saving and carbon reduction, which can make the future living environment become more comfortable, energy-saving, and environmental-friendly. In addition, the devices above can also make contribution environmental protection of the earth and preserve a clean, beautiful, and sustainable environment for future generations.
Multi-Objective Optimization Design of Composite I-Beam Embedded with Viscoelastic Layers
Authors: Wang Tao , Lin Song , Wu Bin , Xu Chao
Published: November 2010

Damping capacity and stiffness loss must be considered together in the design of integral damping composite structures. In the present paper, a discrete layer beam finite element is used to model and analyze a damped composite I-beam embedded with viscoelastic layers. Two multi-objective optimization models are developed with maximum natural frequency and modal loss factor. In the first model, only one damping layer is embedded in each flange of the I-beam. Design variables consist of damping layer thickness and its inserting location. In the second model, multiple damping layers of equal thickness are embedded in the flanges. Design variables included the number of damping layers and their inserting locations. Multi-objective genetic algorithm is used to solve optimization problems. It is showed that the analysis method has acceptable accuracy for composite damped I-beams, and it is convenient for optimization design of integral damping composite structures, especially for the cases embedded with multiple damping layers.
Nonlinear Analysis of a RC Frame Structure with Semi-Interlayers Damaged during Wenchuan Earthquake
Authors: Yu Peng Tao , Sun Jing Jiang
Published: November 2010

Under the excitation of large earthquake, structures enter into high nonlinear stage. Currently, Opensees, Perform-3d and Canny are used as the most popular nonlinear analysis procedures. The fiber model will be introduced firstly and the nonlinear analysis models in Canny are explained in detail. Then Canny2007 is used to conduct nonlinear time history analysis on a heavily damaged frame structure with interlayer in Dujiangyan during Wenchuan Earthquake. Analysis shows that the maximum inter-story drift appears between the interlayer and its upper layer, and the heavy damage agrees well with the results of damage investigation. By comparing the damage extent of frame structures with or without interlayer, it reveals that the seismic performance of RC frame structures without interlayer is obviously better than that of ones with interlayer.
Neural Networks Model for Optimization an Study on Isomorphism Discernment
Authors: Zhang Miao , Liao Ning Bo , Zhou Chen
Published: November 2010

An artificial neural network is composed of large number of simple processing elements by direct links named connections, the benefits of neural networks extend beyond the high computation rates by massive parallelism. Optimization problems could be transferred into a feedback network, the network interconnects the neurons with a feedback path. Graphs isomorphism discernment is one of the most important and difficult issues in graphs theory based structures design. To solve the problem, a Hopfield neural networks (HNN) model is presented in this paper. The solution of HNN is design as a permutation matrix of two graphs, and some operators are improved to prevent premature convergence. It is concluded that the algorithm presented here is efficient for large-scale graphs isomorphism problem and other NP-complete optimization issues.
A New Technology of Microbial Fuel Cell for Treating both Sewage and Wastewater of Heavy Metal
Authors: Zhang Yong Juan , Zhang Min , Yao Xin , Li Yong Feng
Published: November 2010

Microbial fuel cell (MFC) was used to treat organic wastewater and heavy metal waste water treatment in this test. At the same time, organic waste water tank with the oxidation is taken as the battery anode; heavy metal waste water tank with reduction is taken as the cathode of the battery. The results showed that under the same conditions, with copper ion solution as a cathode liquid solution of MFC, the maximum voltage was 61.6mV, the maximum electric power density was 147.4 mW / cm2, and COD removal rate was relatively stable, and reached 68.67%; but when copper ion solution was taken as cathode solution, the maximum voltage was 36.9mV, the maximum electric power density was 43.7 mW / cm2, and COD removal rate changed heavily and reached 58.62%. The results shows that from the point of produce electricity and wastewater treatment, silver ions are better than copper.
Precise Vectorization of Industrial Computed Tomographic Image
Authors: He Bing , Liu Feng Lin , Bi Bi
Published: November 2010

Circle, line and circular arc are the common basic elements in industrial computed tomography (ICT) image. The algorithm of recognizing such elements is the key to industrial CT image precise vectorization. An industrial CT image vectorization system has been studied, including different recognition methods for these elements. Firstly, based on facet model, the sub-pixel edge of an industrial CT image is extracted. Then, the circles are recognized by an improved algorithm based on probability of existence map, while the lines are recognized with the set intersection algorithm of fitting a straight line, and the circular arcs are recognized by the combination of the perpendicular bisector tracing algorithm and least squares function. Finally, the element parameters are measured according to recognition results, and the drawing exchange file (DXF) is produced and transmitted into the computer aided design (CAD) system to be edited and consummated. The experimental results show that these methods are capable of recognizing graphic elements in industrial CT image with an excellent accuracy, besides, the absolute errors of circles are less than 0.1 mm, the relative errors are less than 0.5%. It can satisfy the industrial CT vectorization requirements of higher precision, rapid speed and non-contact.
Simulation of Rolling Resistance of Tire Based on ANSYS
Authors: Wang Ze Peng , Ji Qian Xiang
Published: November 2010

A simulation model is established base on ANSYS software in line with the generating mechanism of the rolling resistance, and then the analytical process of rolling resistance is present. Fourier Series is applied to fit the strain and stress, and order 31 Fourier function is chosen to fit the curves of stress and strain of each element in the rolling course of tire. 2D and 3D finite element model of a 7.00-14 16 PR bias tire is established to solve the strain and stress in a rolling cycle. The rolling resistance of 7.00-14 16 PR bias tire in the case of the rated working condition is simulated and compared with the related empirical equation. The simulation result is basically consistent with that obtained by the empirical equation. The simulation method is conducive to the structural design of tire and computation or prediction of rolling resistance of tire.
Matter Element Digraph Based Workflow Modeling
Authors: Yan Chong Jing , Song Yan
Published: November 2010

Virtual enterprise or e-manufacturing is an advanced and effective manufacturing mode to modern manufacturing enterprises. In these modes, business process has been extended to outer enterprises, i.e. inter organization workflow. In order to achieve a efficient tool for workflow modeling with both simplicity and semantics, matter element is applied to construct a matter element digraph, in which a node is matter element. Then manufacturing service based workflow model can be dynamically changed or composed by matter element transformation. A case is studied to explain the approach presented in this paper.
Influence of Sulfide on Anti-Corrosion Performance of Passive Film Formed on Stainless Steel in Borate Buffer Solution
Authors: Ge Hong Hua , Shen Jing , Song Fei , Zhao Li , Zhou Guo Ding
Published: November 2010

The semiconducting behavior of passive film formed on 316L stainless steel in borate buffer solution containing sulfide was studied by capacitance measurements. The results indicate p-type semiconducting behavior related to chromium oxide of the passive film at -1.12 ~ -0.78V and n-type semiconducting behavior to iron oxide at -0.47 ~ +0.35V, with an acceptor density 11.21020 cm-3 and a donor density 7.501020 cm-3 respectively. The existence of sulfide in the solution obviously increases the acceptor densities which reaches to 215.61020 cm-3 with the sulfide concentration of 12 mgL1, and therefore have a more conductive behavior.
Optimization of Integrated Properties of Zirconia Ceramic Coatings Fabricated by a Plasma Spraying
Authors: Jean Ming Der , Li Ming Cheng , Chien Tzu Hsuan , Chang Huang
Published: November 2010

This study reports on the Grey relational system, with a statistical experiment to enhance the quality characteristics of yttria stabilized zirconia (ZrO2/8%Y2O3)coatings made by a plasma-sprayed process. The eight control factors were designed in an L18 factorial orthogonal array experiment, and the effects of the control parameters on the surface properties were critically evaluated in the experiments. The characteristic terms- surface roughness, porosity, hardness, and wear volume in the sprayed ZrO2/8%Y2O3 coatings through the optimization- were studied comparatively. A grey relational system, based on the Taguchi orthogonal experiment for optimizing multi-responses in the modified properties, was reported. In addition, the influence of control factors on the grey relational system for spraying processes was investigated by analysis of variance. In addition, a confirmation experiment was conducted. Experimental results have shown that the hardness increased by 31.19%, while the surface roughness decreased by 40.67%, the porosity was reduced by 53.53%, and the wear rate improved by 24.21%. It is clear that the quality characteristics for plasma sprayed coatings are greatly improved through grey relational analysis, and that these findings achieved the desired values in regard to the modified properties.
Multi-Disciplinary Education for Product Design and Development
Authors: Guo Ting Liang , Liu Jun
Published: November 2010

In this paper, puts forward a kind of design method of multi-disciplinary engineering education for product design and development. In educational globalization era, higher education has paid more and more attention to cultivate innovation type of talents, who should receive interdisciplinary education. Mechanical design is an integrative subject. Every student should have a basic ability to finish a product design or plan. As a good mechanical engineer or product designer, should know different kinds of knowledge such as mechanical, materials science, industrial design, economics and so on. Along with the development of higher education popularization, the universities pay more and more attention to the talent cultivation and fusion. Followed by many scholars at home and abroad for interdisciplinary teaching research, its essence is expounded. But although the concept of education that interdisciplinary described the basic form, but to carry out interdisciplinary education in college education environment is not easy even if everyone knows it is very important. In order to solve this problem, the first thing is to break through the traditional education ideas, the second is to set an interdisciplinary teaching organization, the third one is to build a set effective incentive mechanism. So in the paper, puts forward a design method of multi-subjects amalgamation during the education of product design and development.
Research on Optimization of Output Speed of ESPCP System under the Multi-Factor Coupled Condition
Authors: Luo Xuan , Wang Shi Jie , Lv Xiao Ren , Sun Hao
Published: November 2010

The optimal output speed of ESPCP system is caused by the coupling of multi-factors and it is a typical nonlinear optimization problem. A genetic neural network model for output speed, which takes the three factors of the content of oil viscosity, pressure difference of the pump two ends, magnitude of interference between stator and rotor as the input variables of this model, has been built with the help of Matlab (Matrix Laboratory) software. The model using genetic algorithm optimize the weights and thresholds of neural network, so the convergence and prediction accuracy of the network were improved effectively. After the simulation through samples study and by combining field data, it shows that the predicting results is basically in accordance with the observation data, and acquire satisfactory results. The research fruit provides a new approach and a route for optimal output speed optimization of ESPCP system when more factors are considered.
Research on PLM-Oriented Collaboration Digital Process Planning Technology
Authors: Jia Xiao Liang , Geng Jun Hao , Huang Li Jiang
Published: November 2010

In order to solve problems of long product development cycle, low collaborative work efficiency in complex product manufacturing firm, the approach of PLM-oriented collaboration digital process planning is put forward. The state of arts on PLM-oriented collaboration process planning and business requirements in complex product manufacturing firms are analyzed. The advantages and needs of PLM-oriented collaboration process planning workflow in complex product manufacturing firm are described in detail. Technology architecture on PLM-oriented collaboration digital process planning is founded also. Based on the development of a PLM-oriented collaboration digital process planning system (PLM-CDPP) in an aircraft manufacturing firm, the architecture of PLM-CDPP system based on the integration of CAPPFramework and Windchill is founded. Key technologies of PLM-oriented collaboration digital process planning system framework, business pattern, workflow and integrated model are discussed in detail. PLM-CDPP system has been applied in an aircraft manufacturing firm and good effect has been shown in practical engineering application.
Effect of Deep-Drawing Properties for Lubricated Condition of Cold-Rolled IF Steel
Authors: Liu Zhan Yinɡ , Wang Yu Qian , Lu Xin , Chen Jin
Published: November 2010

Rub of roll and strip has effect on the texture form of surface strip, in IF steel rolling. The <110>//ND density decreased in surface strip in good lubrication condition rolling, the rolling texture become evenly in thickness direction, {111} texture is dominant, so that r-value increased. Otherwise, the {111} texture become unevenly and r-value decreased. It is must better lubricated for r-value rise, the conclusion is verified by the rolling text and texture analysis.
Virtual Assembly and Load Simulation of Roadheader Cutting Head
Authors: Zhao Li Juan , Guan Qing Zhong
Published: November 2010

The paper introduces the modeling process of space assembly relations of bits and bit-holders of roadheader cutting heads. Through the realization of a single bits and bit-holders positioning and assembly, by using the second development tool - Family Table, achieved all bits and bit-holders assembly of roader header cutting head; programmed with Matrix Formulations of Matlab and began load simulation. Written procedures with short, readable, easy to modify, and practicability for application.
Finite Element Computation Method for Heat Transfer
Authors: Sun Shu Xia , Sun Gang Cun , Tang Le , Zhang Xiao Nan
Published: November 2010

Utilizing finite element software, an universal program has been worked out by the APDL, and it can output the heat dissipating capacity of appointed surfaces in analysis software. The program is so powerful that it can calculate the heat dissipating capacity of heat conductor in which the heat transfer two-dimensionally or three-dimensionally even if the heat conductor is anisotropic, which is difficult to calculate with the mathematic analysis method. The method mentioned in the paper can diminish the inaccuracy caused by the predigestion with the mathematic analysis method. The calculation principle of the program was introduced in detail. Comparing the result of the program with that got by mathematic method, it was indicated that the calculation error of program is very small.
Comprehensive Evaluation Index System in the Application for Earthquake Emergency Shelter Site
Authors: Chu Jian Yu , Su You Po
Published: November 2010

The site selection for earthquake emergency shelter is important to ensure the safety and service ability of shelter in earthquake disaster. It is aim to establish earthquake emergency shelter site evaluation index system, make use of analytic hierarchy process method to determine the index weight, using comprehensive fuzzy evaluation method to evaluate and order the shelters in certain areas, and ultimately select earquake emergency shelters.
Ionic Conduction Performance of Solid Electrolyte Materials
Authors: Zhou Ming , Tian Yan Wen
Published: November 2010

This experiment composes irreversible cells using ultrafine electrolyte materials and platinum slices, to measure the ionic conductivity the cells at normal temperatures with the help of impedance 1286 spectroscopy. We have calculated the ionic conductivities, which indicate that the ionic conductivities of the merchant LaF3 polycrystalline powder and the powder by microwave method are higher than the ones of LaF3 crystal and the powder by Sol-Gel method, to achieve 10-6 Scm-1, so, they are better ionic conductors at normal temperature and can be used as sensor base materials. The experimental data show that O- participates in ionic conduction.
Research of the Main Influence Factors of Fly Ash Thermal Insulation Material
Authors: Zhang Jin Xia , Nie Yi Miao , Li Shi Chao , Niu Fu Sheng
Published: November 2010

By using fly ash as raw material to prepare thermal insulation material in this research. The relationship between the compressive strength and the influence factors was systematically discussed. The compressive strength of the samples reached max when the dosage of silica fume was 5%, sodium hydroxide 40%,the solid-liquid ratio was 0.75 and the content of foam was 4%. The experimental results provided a good basis for manufacturing the thermal insulation material and improving its property.