3D Rigid-Plastic Finite Element Analysis for Skew Rolling Process of the Stepped Part  

作　　者：Gang FANG Pan ZENG 

机构地区：[1]Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China

出　　处：《Journal of Materials Science & Technology》2003年第z1期38-40,共3页材料科学技术（英文版）

基　　金：The research is supported by the National Natural Science Foundation of China ((No. 50205013 and No. 50175060). Special thanks are expressed to the Mr. Guoji Li from Science Forming Technology Corp. (SFTC) for his assistance and advice on the simulation work of.this paper.

摘　　要：Based on rigid-plastic finite element method, a skew rolling process of stepped part is simulated. Considering nodesaving and effective remeshing, the tetrahedron solid elements are used to discrete workpiece. The workpiece material adopts rigid-plastic model, where the flow stress is function of effective strain, effective strain rate and temperature.The thermomechanical coupling is considered in the simulation. To model the spinning workpiece undergoing plastic deformation, a novel solution is presented and applied in this paper. The stress state in the workpiece and forming characteristic of skew rolling are analyzed. The forming load, including roller torque and forces in three directions are predicted. The above analyses are helpful to understanding of forming mechanisms and improving of process and die design.

关 键 词：FEM  SKEW rolling  Stepped part  SPINNING part  FRACTURE 

分 类 号：TH16[机械工程—机械制造及自动化]