bluuebunny/crossref_metadata_2025 huggingface dataset:
‘Practical Utility’: A Design Concept of Immaterial Society
Authors: Tian Li Yan , Yuan Jia Zheng , Li Xin
Published: November 2012

Designers have been thinking to strengthen the immaterial design as a result of the formation and development of Information society, The boundary of design has been extended by the idea of the immaterial design, which enhanced the concept and scope of after-sales services and also emphasized ‘practical utility’ through which ‘economical utility’ goal achieved.
A New Technology of Producing Color Gradient Products
Authors: Li Wen Ya , Ren Xue Qin , Sun Yan
Published: November 2012

The new technology is based on the original four-color gill box, and adding the application of the controller. On the one hand, achieve the sliver color’s order can be matched at will, and every single sliver can be changed about the color and length, and the length of changeover portion can be designed easily, so that the final product color can be achieved in a color from deep to shallow gradients, and also can be two colors that is one of them becomes shallow gradually while another color deepened gradually; on the other hand, achieve the ratio of the colored sliver is adjustable without basal sliver feeding. In the other words, on the premise of output sliver thickness to maintain constant, the cross-section’s color of the sliver is ensured to be any independent color of the four feeding sliver colors, you can also have two or more color combinations. Using this new technology to produce the gradient product has been very popular in foreign countries, but is still rare in the domestic market. So this new technology will have positive effect on textile field, it can provide more new opportunities to the textile enterprises.
An Optimal Design Procedure for Golf Clubhead Considering Impedance Matching
Authors: Wu Zhi Qiang , Sogabe Yuji , Arimitsu Yutaka , Tamaogi Takayuki
Published: November 2012

This study aims to develop a system for golf clubhead to maximize the flying distance of a golf ball after impact. The procedure consists of a step of pre-design with a CAD software, a process of optimization performed by the combination of a general purpose FEM code and an optimization program developed by the authors, and a step of redesign. For the optimization process, the relation between eigen frequencies and the coefficient of restitution (COR) is verified numerically at first. Based on the results of numerical examination, an approach is proposed for the optimal design in impact problem with basis vector method. And the basis vectors are created by using the sensitivity functions of eigen frequencies obtained by modal analysis. A numerical example is given to demonstrate the validity of the developed system.
Cab Conceptual Design for the Equipment System Used for Passenger Car Ergonomic Design and Evaluation
Authors: Du Xiao Ming , Ren Jin Dong , Liu Yong Qing , Chen Zhong Xian , Li Shi Hai , Sang Chun Lei
Published: November 2012

Ergonomics is an important validation content in vehicle product development. The traditional evaluation method of ergonomics adopts physical mockups or prototypes, which is very costly, and is inconvenient to modify, and usually cause prolonged development cycle-time. In this paper, in conjunction with enterprise’s requirements, an ergonomic validation equipment system, which has adjustable main parts, was developed. Firstly, requirements were analyzed, and target model cars ranges were determined, and ergonomic contents which can be validated using this equipment were clarified. The packaging characteristic of the passenger car was analyzed, and the reference fiducial marks system used for packaging design were determined. Based on the requirement of occupant accommodation, anthropometries of target population were statistically analyzed. By using revised SAE J1517 H-Point curves models, the drivers’ seating space was designed, as well as the requirement of the driver seat track travel. Based on the analysis of packaging data of passenger cars, and considering the possible changes, controls such as steering wheel, pedals, sticks, etc., were packaged.
A New Algorithm for Determining the Optimal Parameters of the Spring of a Slider Cell-Phone
Authors: Lee Chao Tsung , Kuo Hsin Chuan , Wu Jeun Len
Published: November 2012

A new algorithm based on orthogonal arrays is developed to determine the optimal solution among the optional settings using the design of experiment approach for newly designed devices. The proposed algorithm begins with several successive orthogonal arrays and ends with a full factorial array. In the proposed algorithm, we suggest a mandatory verification of two additional settings at each orthogonal array to avoid errors in identifying the best level of the dominant factor, which often occur when a non-separable problem is solved. We initially verify the proposed algorithm by applying it to a well-known benchmark problem, the Rosenbrock function. The proposed procedure is described in detail in this paper. To distinguish the superior performance of the proposed algorithm relative to that of other design of experiment approaches, we study three types of problems with non-interactive or interactive variables. Finally, we applied the algorithm on the optimization design of an M-type spring used in a slider cell-phone. With minimizing the maximum stress as the objective function of the designing product, the results show that the proposed method not only provides a final solution that is identical to the problem’s exact solution but also requires much less computation time than a full factorial method.
Aircraft Product Data Traceability Technology Based Workflow
Authors: Yang Xian Lei , Yan Guang Rong
Published: November 2012

Throughout the product lifecycle stages of aircraft development, in order to meet the aircraft product data unique, complete, dynamic, and non-redundant in Product Data Management (PDM) system, and adapt to the effective management of product data in the aircraft development process, the early realization of the aircraft development process co-design. On the basis of the International Workflow Management Coalition (of WFMC) about workflow definition, this paper presents a workflow-based aircraft product data retrospectively theory.
Uneven Granular Module Clustering and Intelligent Optimization for Customizable Products
Authors: Zhang Meng , Li Guo Xi , Li Wei , Gong Jing Zhong
Published: November 2012

To solve the problems of the traditional approach to uniform granular module clustering, a new method for module clustering based on uneven granularity and intelligent optimization oriented to the customizable product design was proposed. Considering the impacts of requirements, functions and structures, the integrated fuzzy similarity matrix of parts was built using the correlativity analysis, and then the hierarchical structure was generated through a fuzzy clustering algorithm. All the universes of the granular layers in the hierarchical structure were gathered and the uneven granular module clustering scheme was formally presented. Four quantified indices including customizability index, customer satisfaction degree, design complexity and assembly complexity, were proposed to set up four optimization objective functions. Use nondominated sorting genetic algorithm II to solve the problem in order to obtain the Pareto optimal set. A design case of the single mast storage/retrieval machine was studied to demonstrate the feasibility of the proposed method.
An Aero-Thermo-Elasticity Method Applied on the Supersonic Aircraft Model
Authors: Tang Hong , Chen Guo Guang , He Hui Zhu
Published: November 2012

Coupling between the vibration frequencies and the unsteady aerodynamic will reduce the flutter speed and ride quality through the aerodynamic heat transfer. As the flight speed improved, the aeroelastic analysis has become an essential means of aircraft design. The method of aero-thermo-elastic (ATE) analysis is coupled with aircraft aeroelastic analysis and thermal deformation, and is more realistic reflection of the actual flight of the aircraft. In this paper, an ATE analysis of aircraft adopted by computational fluid dynamics/computational structural dynamics (CFD/CSD) methods, and compared with the traditional analysis, to provide analytical tools for the supersonic aircraft design.
Optimized Design and Experiment of the Jatropha-Nut Huller
Authors: Zhang Li Hua , Wang Chao , Liu Tao Tao
Published: November 2012

The authors designed an efficient and reliable Jatropha-nut huller. And the orthogonal experiments of 3 factors and 3 levels had been accomplished with hulling rate and the smashed nut rate as the test measurement indexes, which related to the initial moisture content rate of the Jatropha-nut, the speed of the squeeze-wheel and the interstice between the squeeze-wheel and crusher plate. The result shows that, moisture content rate and extrusion interstice affected obviously the comprehensive evaluation value at 1% levels of significance, and roller speed affected obviously the comprehensive evaluation value at 5% levels of significance, the order of impact factors were as follows: extrusion interstice, Jatropha-nut moisture content rate, the roller speed. The best level is: the Jatropha-nut initial fruit moisture content is 20%, speed roller 300r.min-1, extrusion interstice 5mm. After the parameters optimized, hulling rate is more than 85%, and the smashed nut rate is less than 10%.
Product Evaluation in Stages Based on Robust Design
Authors: Lu Xin Chun , Zhang Hui Xia
Published: November 2012

Based on the study and analysis of product design evaluation, structure model of product evaluation in stages based on robust design is presented, and the key technologies are studied. Robust design aims to develop a product that satisfies design requirements while ensuring minimal effects of environmental variability on product performance. The different methods of robust design are applied in product evaluate according to design stage characteristics. Based on mechanical transmission design, a design evaluation system is implemented with the computer. The system is help for concurrent product development in whole life cycle.
Finite Element Analysis of Bicycle Saddle Based on Ergonomics
Authors: Xin Ying , Yang Xiu Ping , Zhang Lei
Published: November 2012

Seating comfort is an important factor for bicycle-rider. It was shown that riding on discomfort saddle could affect the blood circulation system, genitourinary system of human, and harm to their health. In this paper, detailed finite element model of seated human associated with a prototypical bicycle saddle were established, and contact pressure between human body and the saddle was analyzed quantitatively. Then two positions of the saddle were considered, which included horizontal saddle and the one with an upward degree of 15. The contact pressure and the Mises stress over the polyurethane model and the industrial polypropylene model, as well as the buttocks and the perineal area of human body were obtained. The results show that contact pressure is centralized in body's buttocks and the perineal area, especially in the buttocks. Mises stress over human is lower when the saddle is horizontal compared with the upward raked one, in other words, horizontal saddle can improve seating comfort of human.
Optimizing Design System of Four Linkage Mechanism in Hydraulic Support Based on VC + +
Authors: Gao Wen An , Wang Ju Lin
Published: November 2012

Based on the analysis of hydraulic support design variables, a set of hydraulic support mechanism optimization design system has been developed with VC++ language. Design optimization of hydraulic powered support system instead of manual design and greatly shortened the design cycle and improves the accuracy of the design. This paper also analyzes two structural dimensions of the four linkage structure-the horizontal distance and vertical distance between the lower hinge point on the base of the front connecting rod and the rear connecting rod. By the analysis size range of the two structural dimensions has been found. It is Very valuable for designing hydraulic support.
On Auto Brand Mark Design
Authors: Fu Li Ming , Li Jian
Published: November 2012

The auto brand mark design is the core of auto brand image system, the important element of auto body styling design and the carrier of auto culture, which possesses both practical and artistic value and reflects the materiality and spirituality of auto culture. The cultural feature, artistic value, ethnic styles, identifiability and symbolic features of brand mark design together determine that auto brand mark design has its own designing laws. This paper focuses on the method of classifying different approaches to brand mark design, promotes designing principles of brand mark and then analyzes future design trends.
Mechanical Products Conceptual Innovation Design by Application of Enhanced Genetic Algorism
Authors: Yuan Zhi Hua , Jiang Hong Li , Wang Zhi Jun , Ma Kun Peng
Published: November 2012

Currently, the mechanical products assistance design systems mainly focus on the detailed design and the function of mathematics models are often been neglected. In order to solve these problems, a application of mechanical products conceptual design is studied using Enhanced Genetic Algorithm (EGA) in this paper. The conceptual design system is established based on Object-oriented Knowledge representation, and at last a design case of conceptual innovation design is given.
Optimizing Study of Top Beam Structure of Electrostatic Precipitator Casing
Authors: Ji Xiao Meng , Wang Deng Feng , Wang Yuan Qing , Shi Yong Jiu
Published: November 2012

An optimizing design idea is produced for the structure of top beam of electrostatic precipitator casing. The thermos cabinet and the original box shaped top beam of casing compose a truss beam system whose overall section height is increased greatly, resultantly, the bend bearing capacity of truss beam increases significantly than that of the original top beam of casing. Consequently, the wall thickness of box section of the original top beam can be reduced so that the steel consumption can be saved. Based on a practical project, the load effects on truss beam were investigated, respectively, including the air pressure difference and the temperature difference among external layer, thermos cabinet and interior of casing. Besides, the evaluation method of internal force in truss beam was investigated and the selective preference of truss beam configuration was conducted. The unfavorable load cases of air pressure difference and temperature difference are proposed for truss beam design. Besides, the accurate evaluation method of internal force and the design method for economical configuration of truss are proposed. In consideration of load bearing effect of thermos cabinet layer, the optimized design of truss beam originating from box sectioned top beam can ensure the truss works safely and reduce the steel consumption significantly.
Maintenance for the Mirror Systems of LAMOST Telescope
Authors: Zhang Jun Fang , Zhou Jian Jun , Shi Hu Li
Published: November 2012

The Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) is a quasi-meridian reflecting Schmidt telescope laid down on the ground with its optical axis fixed in the meridian plane and the telescope will be the one that possesses the highest spectrum acquiring rate in the world. To secure its smooth operation, each component, especially the mirror system needs to be maintained in a good condition. Some equipment is needed and the operation must be considered at early stages. In this paper, a feasible approach is put forward in which the concept of human and machine cooperative work is used to assure the successful operation at lower cost. An electrical driven forklift with some special fixtures designed for this work is used for MB mirror system and a special designed crane is used for the assembly and disassembly of MA mirror system. Procedures and methodologies for the identification of assembly and disassembly sequence, special tool design, time and cost analysis, and human factors analysis of the assembly and disassembly sequence are presented.
Carbon Reduction Technique Used in Panel Furniture Design & Manufacturing
Authors: Hong Zhi Gang
Published: November 2012

This paper describes carbon reduction techniques as energy saving design and energy saving manufacturing technologies in panel furniture industry. The author points out that reasonable panel furniture design means energy saving design. Designers can get reasonable panel furniture design by using appropriate design platform, doing good color designs and designing wonderful culture characters. Tow examples explained how those did. This paper also classifies the carbon reduction manufacturing process of panel furniture as GT (group technology) technologies, perfect panel board cutting plan and reasonable surface decoration. Some personal working experience is provided to support them.
The Conceptual Design of Exercise Washing Machine Based on Trimming
Authors: Zhang Er Hu , Gao Chang Qing , Yang Bo , Su Huan Huan
Published: November 2012

Trimming is a kind of problem resolving tools for invention in TRIZ. The technical system can be improved by trimming a component of the system and redistributing its function to other components.Functional analysis is the basis for applying trimming method. Based on definition of function and the process of functional analysis process, four kinds of technical system trimming strategies were discussed and the general steps for technical system trimming were analyzed.The effectiveness of trimming method was applied on the exercise washing machine design.
The Research and Application of Innovative Approaches Based on Cognitive Processes
Authors: Su Huan Huan , Gao Chang Qing , Yang Bo , Zhang Er Hu
Published: November 2012

Conceptual design is the most innovative stages in the life cycle of product development, and its process consists of a large number of cognitive activities. Cognitive science is an interdisciplinary research emerging science of nature and law of the mind and intelligence. In order to get the creative thinking effectively in the product innovation process, the cognitive science and creative thinking of thinking psychology and the inventive problem solving method which is based on the law of engineering and technical development must be organically combined, to stimulate the thinking of designers and achieve the product innovation design rapidly. A method based on the cognitive process to solve the innovation problem is presented in this paper. TRIZ and cognitive process are combined organically. The cognitive processes of TRIZ problem-solving are also described in this paper, and an instance of the beam extraction machine is given.
The Analysis Technology of Parameters Change Impact Based on the Product Interface Coupling Network Model
Authors: Wang Lei , Wang Ai Min
Published: November 2012

In the current stage of product development process, it is lack of the technology of parameters association modeling, in order to achieve the product parameter configuration modeling, building the interface association constraints network model based on the process of top-down product decomposition,. The technology proposed in this paper studied reasonable constraints organization and expression method, it includes parameter extraction, data structure based on “Interface- Characteristic parameters- Coupling constraints and product coupling modeling analysis. The technology provides support for the detailed design of product.
Modulus Packaging Design of the Cylindrical Ceramic Furnishings
Authors: Xu Li , Li Da Gang , Xu Chang Yan , Zhang Sai Gang , Shi Yan Xiao
Published: November 2012

Packaging design for the typical characteristics of cylindrical ceramic furnishings selects the acrylic and MDF as hoarding material, and uses the 32mm system modular to design structure of hoardings, we meet the needs of different sizes of ceramic furnishings by connections of the hoardings in any combination, and also have taken the cellular edge length of 20mm honeycomb paperboard where a cushioning material and box hoardings are used as secondary recovery into account. The results show that the selection which uses the nylon rope whose diameter is 5mm as the connection of the box works better.
Study on Evaluation System Based on the Reconfigurable and Modular Design
Authors: Shang Rui , He Yun Fang , Zhang Zhen
Published: November 2012

This article studies evaluation system witch evaluates coordination of sizes and characteristics for parts, modules and mahine after parametric. The studies are suitble for reconfigurable and modular design of vertical four edge-sealing bag packaging machine.
Finite Element Analysis and Optimization of Wave-Frame Based on ANSYS
Authors: Wang Shou Jun , Xiong Xing , Yang Xiu Ping
Published: November 2012

According to uncertainty of the design parameters for the domestic wave-maker of flat-plate, the wave-frame is analyzed based on ANSYS to find out its weaknesses and various parts of the deformation in order to reduce the negative effects of the wave system.On the premise of ensuring the intensity and stiffness, the purpose is to reduce weight and to reduce the inertia force, so as to achieve the optimization of the wave-maker.
Research on Product Cooperation Design for Knowledge Management
Authors: Feng Qing , Yu Sui Huai , Zhang Qing , Wang Wei Wei
Published: November 2012

In order to effectively integrate the superior resources in the field of production design and cooperate every procedure in the process of design and manufacture, this paper proposes a kind of cooperative product design for knowledge-oriented management. According to knowledge classification, this research can be divided into product design and program design; along with the form of CSCD’s dynamic distribution, this research also analyzes the knowledge management architecture under the collaborative environment; furthermore, it then establishes the knowledge-oriented cooperation environmental management system under the logical framework. Finally, through the example of special vehicle co-operation projects, this paper gives illustration to the research and verifies the actual effectiveness of the method.
An Analysis of Apparel Products Development Process Model: From the Prospective of Integrated Design
Authors: Zhou Hong Lei , Yuan Rong , Dong Lin
Published: November 2012

Based on the analysis of the apparel products development process and an application of the computer programmed analysis method, this article details a multilayer apparel products development model that proved to be more effective and valid than the traditional method of apparel products development.
Design of Three-Dimensional Parallel Vibration Casting Machine
Authors: Wang Cheng Jun , He Tao , Yang Xia , Chen Jia Sheng
Published: November 2012

In order to reduce casting defects and improve casting quality, the author has developed a three-dimensional parallel vibration casting machine based on parallel mechanism. The paper introduces the three-dimensional parallel vibration casting machine in structure composition and functional properties, the casting machine degree of freedom of excitation mechanism is calculated, its motion performance is analyzed, and the kinematics equations are established. The designed casting machine achieves support and excitation functional separation of moving parts which takes complete decoupling of hybrid mechanism 2PRRR-P (2R ) as excitation mechanism, realizing flask vibration along the X, Y, Z three directions. Test results show that, the casting machine can significantly improve casting quality, raise labor productivity, save casting raw materials, and reduce the production costs.
The Reconstruction of Model and Analysis for Vortex Disk of Scroll Compressor Base on Reverse Engineering
Authors: Dong Xue Wu , Zhai Ya Fei , Ren Dai , Mu Kai
Published: November 2012

In this paper, we obtain point cloud data on vortex disk surface of the scroll compressor with ATOS three-dimensional optical measuring instrument and complete the reconstruction of three-dimensional solid model in the CATIA software environment, by the reverse engineering technology, the problem can be solved for part of unmeasured surface. The final error analysis is done for the three-dimensional model. It shows that we should have a well-planning and adopt the reasonable methods both for measurement and data processing to facilitate surface reconstruction of the complex object and the precision of modeling. The problem unmeasured is solved by both of the data from multiple view and data substitution. We can use local surface data to substitute the most of surface data which is not available to make complex surface reconstruction for scanning and modeling of small object with deep slot.
Surface Reconstruction Based on the 3D Laser Scanner
Authors: Chen Le Yang
Published: November 2012

3D laser scanning is one of the key technologies of reverse engineering. Digital point cloud is produced by the rapid scanning technology. Some technology about reverse engineering is introduced in this thesis. The curved surface can be generated by the point cloud processing, when the point cloud can be processed by the software called Geomagic Studio.
A Novel Mesh Segmentation Method for Conventional Engineering Parts in Reverse Engineering
Authors: Liu Peng Xin , Liu Xuan , Liu Ping
Published: November 2012

In this paper a step segmentation method for conventional engineering parts which usually comprise by simple analytic surfaces and are important investigation objects of reverse engineering is proposed. In the first segmentation fourteen directions are chosen initially, and a k-mean algorithm according to the normal vectors is used, then the surface is divided to form patches by a region-growing scheme. In order to identify simple analytic surface, curvedness of a patch is set as the criterion by which the surface merged into near constant curvedness region. Especially a novel mean shift algorithm is adopted in this method, that a powerful technique for clustering in image process, and is extended to normal filtering while preserving the features to increase robustness of the method. Experimental evaluations using scan data or noise data demonstrate the efficiency of the proposed method.
Structure Analysis to the Rotary Wheel of a Tire Testing Machine
Authors: Tian Fang , Liu Guang Ming , Tao Ke
Published: November 2012

Rotary Wheel is important component of the tire testing machine. The natural frequency of the wheel will be determine by it's structure, and these concern the performance of the tire testing machine. Through model analysis a reasonable structural style of the wheel was determined. Dynamic property of the wheel affected by structural parameters was also discussed in the paper. From the Analysis above reasonable parameters of the wheel were determined and sufficient natural frequency was ensured.
Structure Analysis of the Subframe in ZJZ3250 Self-Dumping Truck Base on Finite Element Method
Authors: Liu Xiao Yong , Zhang Yi
Published: November 2012

Three-dimensional solid model and the finite element contact analysis model of the frame in ZJZ3250 self-dumping truck are created by using the ANSYS software, different constraints and loads are imposed in the conditions of bending, torsion and lifting, the stress distribution of the subframe is got. So the stress concentration positions are found, the strength of the subframe is checked, it is proved that the static strength of the subframe is in the allowable range in the three conditions, to meet the design requirements, and provide a theoretical reference for further design.
The Co-Simulation and Experimental Study of Truck Crane Telescopic System
Authors: Wang Tong Jian , Lv Chuan Xiang , Chen Wei , Xi Bo Bo
Published: November 2012

Detailed analysis of the mechanism of truck crane, establishes a co-simulation model of the telescopic system with the software of AMESim and Virtual.Lab motion, and conducts a serious of experiments. The performance of Truck crane telescopic system is learned through the comparative analysis of the simulations and experiments. The result shows that this co-simulation can simulate the actual work of the telescopic system well.
Experiments on the Vibration Control of Flexible Rotor Using Shear Mode MR Elastomer Damper
Authors: Wang Jian Xiao , Wang Shi Wang
Published: November 2012

A shear mode magnetorheological (MR) elastomer damper is designed and manufactured, in which the MR elastomer is made by mixing RTV silicone, carbonyl iron particles and silicone oil, and solidifying under magnetic field. A flexible cantilever rotor system with single disk is constructed, and the controllability, effectiveness and stability of vibration control for the imbalance response of the rotor system using the MR damper are experimentally studied. From the test, it is found that as the strength of applied magnetic field increases, the damping and stiffness of the damper are increased; the critical speeds of the rotor system supported on the MR damper is increased distinctly, and the vibration at two critical speeds are restrained; the on-off control method may be used to control the rotor vibration while passing through the two critical speeds. The study shows that the shear mode MR elastomer damper is suitable for active vibration control of flexible rotor.
One Dimensional Finite Element Method for Continuous Curved Box Girder Including the Shear Lag Effect
Authors: Wu You Ming
Published: November 2012

The homogeneous solutions of the governing differential equations derived from energy variational method was used as the displacement patterns of finite segment. The stiffness and load matrix are obtained in terms of directed stiffness method and working energy principle. A one dimensional finite element method is presented to calculate the shear lag effects with multi-span continuous curved in engineering for general box girder. In addition, the tests of perspex modeled bridge and numerical calculation of the model tests by proposed method and finite element method are made. The results of model tests and numerical calculation verify perfectly in this paper.
Fatigue Reliability Analysis of Turbine of Turbocharger Based on the Endurance Test Profile of Engine
Authors: Zheng Wang , Xing Wei Dong , Wang A Na , Xin Li
Published: November 2012

For the fatigue failure mode of turbine of turbocharger for vehicle application, the method for fatigue reliability analysis and fatigue life prediction of turbine is studied based on the endurance test profile of engine. Firstly, the critical location of turbocharger turbine with fatigue failure mode is determined. Then, the fatigue stress process of turbine is calculated according to the main operating modes consisted of the endurance test profile of engine. The fatigue strength of critical location of turbine with fatigue failure mode is studied through the fatigue test of imitation specimen, and the relationship between the fatigue life of turbine and stress is developed. Further, according to the endurance test profile of engine, the reliability model of turbine with fatigue failure mode is developed, and the rule that the reliability of turbine with fatigue failure mode changes as the cycle number of endurance test of engine is studied. Finally, the method for determining the reliable fatigue life of turbine is proposed.
K Value Calculation of Central Crack Plane Using FRANC2D
Authors: Ren Da Long , Wan Shui , Zhong Zhi Peng
Published: November 2012

Abstract: FRANC2D is compared with the finite element programs and professional finite element programs for fracture mechanics analysis, and its processof fracture mechanics analysis is showed. By central crack plane,the fessibility of FRANC2D is used to calculate value is verified; different grid thickness model results is researched, which showed the grid size has little effect on the calculation result, and a coarse grid moel may get satisfactory result.
Development of Central Minute Cavity in the Workpiece of Cross Wedge Rolling
Authors: Yang Cui Ping , Zhang Kang Sheng , Hu Zheng Huan
Published: November 2012

Central cavity in the workpiece of cross wedge rolling is a high-level product defect which would seriously weaken the strength of material. Based on the three-dimensional elastic-plastic finite element analysis method, numerical simulation of cross wedge rolling parts with minute central cavities was performed. The area changes of the minute central cavities were obtained, and combined with the internal stress state during the rolling process, the viewpoint that tensile stress in the three-dimensional directions is one factor that leads to cavity growth was expound.
A Type of Bomb Falling Analysis and Reliability Verification
Authors: Chang Qiu Xiang
Published: November 2012

Using UG to build a shell of the three-dimensional solid model, using the finite element software on the solid floor is analyzed, the shells fall into 8 drop, respectively, to various forms of stress and strain were compared, and the shells of the reliability analysis.
Design and Analysis of Anchor Pegs in Cemented Acetabular Cup
Authors: Wang Chang J , Mynors Diane J , Sihra Tarsem
Published: November 2012

Cement anchor pegs have been used in acetabular cup fixation. This paper analysed various designs of cement anchor pegs using the finite element method. The design parameters have been investigated including the diameter, length, position and chamfer of the cement anchor pegs. It was found that introducing a chamfer to the cement anchor pegs would reduce the maximum stress by 25 percent in the cement mentle. The analysis in this paper provides the foundations further work to be carried out including a detailed model of bone and cement interfaces.
Finite Element Analysis and Optimizing Design of the Bus Body
Authors: Zhi Shu Ya , Liu Hong Jun
Published: November 2012

To model one bus body based on shell element and put it into the finite element analysis ANSYS made the mechanics analysis Using Pro/e software. Exert bending, reverse load, etc and done the operation and calibration. Through to adjust body structure balanced each part stress of the body. Analyzed data and put forward reasonable improvement scheme for restarting the optimization design. Got the purpose of the Body quality being light with high strength, the material effective utilization rate dramatically been improved.
Fuzzy Reliability Analysis on the Kinematic Precision of Mechanism
Authors: Wang Wei Xing , He Cheng Ming , Liu Tao
Published: November 2012

Introduced the conventional failure criterion of the precision of motion of mechanism and the analytical methods of reliability, and then focused on fuzzy failure criterion of precision, advanced mechanism fuzzy reliability formulas, and illuminated the application of this method.
Assembly Planning Method Based on Design Structure Matrix
Authors: Zhang Gen Bao , Li Dong Ying , Peng Lu , Lou Jin Hua
Published: November 2012

Aiming at the existent resource constraints problems during the assembly process of complex electromechanical products, mission planning method based on design structure matrix is put forward. Utlizing the divding and uniting calculation in the design structure matrix, the assembly missions are divided into several different layers. By constantly adjusting the planning method, the shortest excutive construction period under the resource constraints is obtained, with features as simplicity, intuition, easiness for computer realizing and so on. The feasibility of the method is proved by solving the assembly mission planning problems of NC machine.
Experimental Investigation of Mechanical Press Dynamic Behaviors by Ram Displacement Waveform Curves
Authors: Zhang Chun , Xiao Hai Feng , Wang Ming , Li Bing
Published: November 2012

This paper analyses the measurement demands of the mechanical-press ram displacement waveform on the sample frequency and displacement resolution. A virtual instruction system was developed that contains a USB2069 data acquisition card and a software based LabVIEW, and a Hall sensor sensitizes the displacement especially at the ram bottom dead center (BDC). The paper describes and explains the characteristic behaviors of the ram displacement curve on the macro shape and the micro waveforms of BDC in various shutheights. The discussion indicates that a flat bottom region of BDC waveform is due to the clearance between the transmission devices and the elastic distortion of the press frame, and the position of the punch backward departure is a steady inflexion point, which is the best BDC bottommost position. Based the time of flat BDC region, the clearance values can be calculated.
The Finite Element Analysis on Can Coiler of Gilling Machine
Authors: Lin Bin , Dong Xiao Fei , Zhang Guan Wei
Published: November 2012

This paper first analyzes the structure of can coiler to estimate the load of the internal bearing structure and then uses the Pro/e software to calculate the mass and centroid of the can coiler, in the same coordinate system to determine the load of the bearing. Next, the intensity of bearing under different conditions will be analyzed by using the ANSYS contact analysis module, from which the distribution of stress and size of extreme value can be observed. At last, the impact of load changes on the stress will be analyzed based on the comparison of the results.
Finite Element Analysis of the Nut-Supports Subassembly Based on ANSYS
Authors: Wang Shou Jun , Xiong Xing , Wang Hong Jie
Published: November 2012

In the condition of alternating impact ,the nut-supports subassembly is analyzed according to uncertainty of design parameters. Firstly, a three-dimensional (3-D) finite element (FE) model of the nut-supports subassembly is built and is meshed,and the constraints and loads are imposed.Secondly,the model of nut-supports was assembled using the software ANSYS to understand the stress distribution and various parts of the deformation of the nut-supports and its weak links in the harmonic forces.Finally,socket head cap screw has not enough pre-load in the condition of alternating impact and will be simplified.It is analyzed and checked whether it is cut or not; which provides the reference data for design and optimization of the wave maker.
Study on Reliability-Based Optimal Design of Multi-Stage Planetary Gear Train in Wind Power Yaw Reducer
Authors: Wan Wu Yong , Zhang Suo Huai , Meng Xu
Published: November 2012

Based on reliability optimization design theory and sub step optimization method, the mathematical models of transmission ratio distribution and gears’ parameters are established, respectively. In the model, the normal module, pressure angle, the teeth width, teeth number and modification coefficient of the gears are taken as design variables, while the volumes of the yaw reducer and single stage transmission are taken as the objective functions. Then the complex optimal problems are solved using two heuristic optimization algorithms. Compared to the original design, the volume of the yaw reducer decreased by about 3.5% under the premise of maintaining the strength requirements and ensuring high reliability, which supplies an effective approach to further developing the reliability optimization design of multi-stage planetary gear systems.
Research on the Influence of Hole Arrangement on Ring Die Strength
Authors: Wang Yi Long , Wu Kai , Yang Kai , Peng Bin Bin , Sun Yu
Published: November 2012

Ring die is the critical component of pellet mill, its working performance and service life directly affect the pellet quality and production cost. This work analyzed the stress distribution of ring dies with two different hole arrangements and studied the influence of stress distribution on ring die strength. It is shown that there is stress concentration at the hole edge and the stress concentration distributes along the width of ring die at the feed side, the die hole arrangement have influence on ring die strength and the effect of hole wall thickness on ring die strength increased with the wear of die hole, finally a better pattern of hole arrangement was obtained.
Reliability Estimations for Liquid Rocket Engine under Asymmetric Loss Function
Authors: Zhu Hong Bo , Kou Zhu , Liu Qian
Published: November 2012

Based on asymmetric loss function, the estimations and their properties of liquid rocket engine are discussed. The UMVUE and bayes estimator for some lifetime parameters, reliability and hazard function are obtained under entropy loss function. And we prove the estimations with the form of cT+d are admissible. At last, the statistical performances are compared through the MSE based on Monte Carlo simulation study. According to these comparisons, it is suggested that the empirical bayes estimators have high-precision.
Analysis on Mechanical Properties of Instrumented Indentation Tester Frame
Authors: Guo Jun Hong , Ma De Jun , Chen Wei , Song Zhong Kang
Published: November 2012

Finite element analysis is undertaken to identify the extent of loading deformation of instrumented indentation equipment frame which is a main part in High-precision instrumented indentation tester developed and realized by our group. The working load enacted in the model is varied from 10N to 100N, and the increment load is 10N. By plotting and fitting data of inclination angle and working load, the relationship between frame inclination angle and working load is established. The function of this relationship is θ=0.000024*F. When the working load is up to the upper bound 100N, the inclination angle of frame reaches the maximum value 0.00241°.Load analysis of push rod shows that the percent error between measured load values and real indentation load values caused by maximum inclination angle is in 10-8order. The conclusion is thus derived that frame inclination has nearly no effects on load measurement precision. The research in this paper confirms that the design of frame belonging to High-precision instrumented indentation tester is appropriate.
Kinematic Characteristics and Optimization Analysis of Oval Geared Hoeken Mechanism
Authors: Huang Zhi Dong , Du Yun Pu , Yu Wei Na , Qi Xiu Biao , Yang Zhi Qiang , Lang Qing Yang
Published: November 2012

Kinematic characteristics of Hoeken mechanism is analyzed. Variable ratio transmission characteristics of oval gear is obtained. Oval geared Hoeken mechanism is presented. Kinematic characteristics of oval geared Hoeken mechanism is clarified. Eccentricity is optimized. The oval geared Hoeken 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.
Coupled Dynamic and Vibration Analysis of Beveloid Geared System
Authors: Fan Rong , Song Chao Sheng , Liu Zhen , Liu Wen Ji
Published: November 2012

Dynamic modeling of beveloid gears is less developed than that of spur gears, helical gears and hypoid gears because of their complicated meshing mechanism and 3-dimsional dynamic coupling. In this study, a nonlinear systematic coupled vibration model is created considering the time-varying mesh stiffness, time-varying transmission error, time-varying rotational radius and time-varying friction coefficient. Numerical integration applying the explicite Runge-Kutta formula and the implicit direct integration is used to solve the nonlinear dynamic model. Also, the dynamic characteristics of the marine gear system are investigated.
Modeling and Optimization Research of a Planar Six Bar Mechanism
Authors: Wu Ying , Zhou Xu
Published: November 2012

For being convenient for researching the dynamic characteristic and the improvement and use of the planar six bar mechanism, for improving the dynamic technical performance, the three-dimensional solid model of the mechanism was established with ADAMS. Each part of the model in ADAMS was set up. Simulation analysis on the working process of the mechanism was achieved. The structure optimization parameters of the mechanism were obtained. The result proves that the vertical location of revolute joint of link and rocker, the location of revolute joint of crank and frame, the horizontal locations of two revolute joints of link are almost no impact on the vertical speed of slider. The vertical locations of revolute joint of frame and rocker and revolute joint of block and slider have less impact on the vertical speed and acceleration of slider. The vertical location of revolute joint of link and crank, the horizontal locations of revolute joint of frame and rocker and revolute joint of block and slider have greater impact on the maximum vertical speed and acceleration of slider.
An Analysis of the Lateral Dynamic Response of an Axially Moving Cantilever Beam under a Moving Mass
Authors: Zhang Zhi Xin , Hu Zhen Dong
Published: November 2012

From the view of flexible multibody dynamics, this paper considers not only Euler-Bernoulli beam assumption but also the effects of rotary inertia and beam’s inner tension, the equation of motion and associated boundary conditions of the dynamic model are derived by using the extended Hamilton’s principle. Converting the varying-time equation into a varying-coefficient differential equation in fixed region by substituting argument. And truncating the equation to a set of varying-time ordinary equations expressed by modal coordinates based on Assumption Modal Method and Galerkin Discrete Method. Then the equations were solved by using Newmark time integration method. The results show that moving mass excites mainly the first order mode vibration of beam. Before the moving mass disengages the beam, the dynamic effect of mass is so small that cantilever beam is lacked of obvious vibration. Its transverse displacement was mainly driven by static load. After the moving mass disengages the beam, the shorten length and shrinking movement of beam make the instantaneous vibration frequency continuously reduce and the vibration displacement gradually decrease too. While, at the same time, its total mechanical energy is increasing, so the beam is in unsteady vibration state.
Study on Dynamic Simulation Input Form of Locomotive Wheel Flat
Authors: Liu Yang , Liu Jian Xin , Guo Yu Jiang
Published: November 2012

For the railway vehicles,flat damage on wheels is a very common defects,the sudden impact and vibration caused by flat damage on wheels endangers the wheels and the rail components a lot.The cause for flat damage on wheels,its physical characteristic, geometric representation,and its precaution are discussed in this paper,and applied to the Simpack multi-body dynamics software, a input form for flat damage on wheel was given.
A Harmonic Response Analysis of Food Refrigeration Compressor Based on Abaqus
Authors: Zhang Li , Zhang Shuo , Zhang Yuan Yuan , Ma Yan Miao
Published: November 2012

A harmonic response analysis was conducted on semi-hermetic refrigeration compressor by Abaqus software. The vibration displacement and acceleration response spectrums of the compressor’s key points were obtained. The vibration characteristics of the compressor show that the harmonic response analysis result is consistent with the experimental one. The vibration of the compressor at 50Hz is the most dramatic. The first trough in each direction is found around 70Hz, and after that each direction’s acceleration goes up significantly. At the same time, the conclusion verifies the vibration of compressor’s bottom corners by LMS Test. Lab Signature Testing. The paper provides a scientific reference for the further study on vibration and noise reduction in food refrigeration compressors.
Dynamic Simulative Study of Hoisting System of Mine
Authors: Li Zi Gui , Wang Zhi Xia , Chen Jian He , Zhong Yu Na
Published: November 2012

Taking a single-rope winding hoist for example, the paper studied dynamic characteristics of mine hoisting system with single container in details. It established the dynamic mathematical models of hoisting system. Then the dynamic simulation is done in a variety of motion states in Matlab2008 by using computers. It indicates that some mechanical parameters such as the mass of sheaves and cargo, the mass ratios of them, wire rope stiffness and so on, have obvious influences on the dynamic characteristics of the system. The results provide an important reference for the dynamic design of the system.