Intensity Comparative Analysis Based on Ideas Between Involute Gear and Double Involute Gear     

ZHANG Guang-hui  TAO Ling-feng  LIU Wen 《保鲜与加工》2005,(11):1-4

Modeler and simulation modules in Ideas software are used to build the finite element models on involute gear and double involute gear with accurate tooth shape, and with the same design parameters and under the same loads, finite element contact analysis has been done. At last, the contact stress and bending stress on the two types gear transmission at the different meshing positions are solved out, and comparative analysis and study have been done. At the same time, that the ladder-shape tooth on the double involute gear how to influence contact stress and bending stress is emphatically analysed. All above offer the theoretical foundation that bring the double involute gear with ladder-shape tooth into the industry.  相似文献   

Simulation and Experiment of the Forging Process of Railway Lorry Bomsster     

WANG Meng-han  CHEN Xi-hou  ZHOU Jie 《保鲜与加工》2007,(5):83-86

Bomsster is a key load-bearing part of railway lorry bogie.Because of its inherent defects casting-steel bomsster could not meet the demands of the heavy load,acceleration and security for lorry.So forging process is proposed to form it.The forming performance of forging-steel bomsster is analyzed.A forging technology is presented which realizes two forging-steel bomsster parts formed in one die.With the plastic forming simulation software DEFORM-3D,the simulation and optimization of the forming process of forging bomsster has been taken based on 3D rigid visco-plastic FEM theory.Optimized scheme has been used to direct the pilot product.The results of product's testing and application suggest that the new forging technology is feasible and the performance of the product is credibility and stabilization.The factory has realized large scale production of a series of forging-steel bomsster.Remarkable benefits of both economy and society have been achieved.  相似文献   

Spline Boundary Element Method for Calculating Three-Dimensional Electrostatic Fields     

Yun Zhengqing Tan Bangding 《保鲜与加工》1993,(5):79-84

Based on [l].this paper presents a new spline-BEM for calculating 3-D electrostatic fields,in which bi-cubic B-splines are used as basis functions. The corner problem in BEM and the extreme conditions for splines are circumvented. The numerical results presented show that the global approximation .convergence and stability of the method are satisfactory.  相似文献   

Coupled Thermo-Elastic Contact Finite Element Method and It''s Application in Gearing     

Li Runfang Li Yusheng 《保鲜与加工》1993,(1):96-101

A new finite element method is presented in this paper to analyze the thermo- elastic contact problem with heat input on meshing tooth faces. The computational model of meshing gear has been established and the frictional heat input on meshing tooth faces is estimated. In addition, 2-D finite element analysis program for this kind of problem is listed. The test and practical examples are given to show the validity and versatility of this method.  相似文献   

FINITE ELEMENT PREDICTION OF THE PERFORMANCE OF AN INSTRUCMENTED GEOTEXTILE-REINFORCED WALL     

Peng Shusheng 《保鲜与加工》1995,(3):85-95

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Application of Engineering WorkStation in Analysis of Truck Crashworthiness     

Yang Changqi 《保鲜与加工》1995,(1):81-86

This paper presents the basic equations and algorithm of vehicle crashworthinessbriefly.Take a light-truck for example,some applied problems in ustng Engineering WorkStationto analysis truck crashworthiness are discussed.A installation method of contact surface is intro-duced,Finally,a nurnerical simulation result is presented.  相似文献   

The Direction Characterisitic of Stress Gradient in Crack Structure and Three-Dimensional Line-type Element     

Qing Jialong 《保鲜与加工》1994,(3):54-59

Analysis is given to the direction characteristic of stress gradient in crackstructure by using three-dimensional line-type element,The purpose is considerably to reduce theoperation of computation and improve the computation precision in finite element analysis.  相似文献   

Nonlinear FEM Analysis of RC Staggered Joint by Using APDL Language     

WANG Zhi - jun  ZHU Jian - ben 《保鲜与加工》2006,(1):74-79

In order to settle some problems involved in applying ANSYS into nonlinear Finite Element Analysis of RC structure,this paper discusses the nonlinear FEM method for staggered joint,incorporating its experimental result.The main solved problems are as follows:(1) The fundamental process of nonlinear FEM analysis;(2) How to model the behaviors of reinforcement and concrete respectively;(3) How to model the bond-slip relationship between reinforcement and concrete.  相似文献   

COUPLING ANALYSIS METHOD FOR INTERACTION BETWEEN FOUNDATION WITH CAVERN AND FRAME STRUCTURE     

Luo Jizhang Chongqing Institute of Architecture  EngineeringLiu Zhengbao Nanyang University 《保鲜与加工》1991,(2)

In this paper,the interaction between foundation withcavern and frame structure is studied by the coupling methods of BEMand FEM.On the interface between the foundation and structure,thecoupling analysis needs to satisfy both the condition of displacementcompatibility and force equilibrum.A calculating program for two-dim-ensional problem is worked out in the computer,SIEMENS 7570C.Twoengineering examples are calculated and the results are compared withthose obtained by the comventional simplified method and with the observedresults from the engieering structures.It indicates that it is necessaryfor the weak rock foundation with shallow cavern,in the buried depth,to take the interaction into account.  相似文献   

Application of Matter Element Analysis in Assessment of Ambient Air Quality     

Lin Yan Gu Hengyue Sun Yang 《保鲜与加工》1997,(1):38-42

A new method for assessment of ambient air quality is proposed by using matter element analysis.This model is simple and reasonable in assessment.The practical example is given,and compared with other methods.  相似文献