自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 27    No. 6    June 2020

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Influence of radial forging process on strain inhomogeneity of hollow gear shaft using finite element method and orthogonal design
LI Hong-xu(李洪旭)1, 2, WANG Kai(王开)1, 2, LUO Rong(罗容)1, ZHU Zi-zong(朱子宗)1, DENG Shuai(邓帅)1, LUO Rong(罗荣)3, ZHANG Jing-yi(张靖翊)3, FANG Fei-song(方飞松)3

1. College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China;
2. Chongqing Key Laboratory of Metal Additive Manufacturing (3D Printing), Chongqing 400030, China;
3. Chongqing Jianshe Industry (Group) Co., Ltd., Chongqing 400054, China

Abstract:Due to the current trend towards lightweight design in automotive industry, hollow stepped gear shafts for automobile and its radial forging process are widely investigated. Utilizing coupled finite element thermo-mechanical model, radial forging process of a hollow stepped gear shaft for automobile was simulated. The optimal combination of three process parameters including initial temperature, rotation rate and radial reduction was also selected using orthogonal design method. To examine the strain inhomogeneity of the forging workpiece, the strain inhomogeneity factor was introduced. The results reveal that the maximum effective strain and the minimum effective strain appeared in the outermost and innermost zones of different cross sections for the hollow stepped gear shaft, respectively. Optimal forging parameters are determined as a combination of initial temperature of 780 °C, rotation rate of 21°/stroke and radial reduction of 3 mm.

 

Key words: radial forging process; strain inhomogeneity; orthogonal design; coupled thermo-mechanical analysis; finite element method

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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