Simulation of cylindrical upsetting of porous materials by finite element method

Xingquan Zhang, Yinghong Peng, Xueyu Ruan, Miaoquan Li, Shichun Wu

科研成果: 期刊稿件文章同行评审

2 引用 (Scopus)

摘要

An important concern in forging of metal material is whether the desired deformation can be accomplished without failure of the work materials. In this paper, based on the plastic theory of porous metal materials, the compressible rigid plastic finite element method (FEM) was used to simulate the deformation processes of cylindrical upsetting of porous metal materials with full account of contact friction boundary conditions (m), the height to diameter ratio (H/D)and the initial relative density (R0). Furthermore, combining the simulation results with the ductile fracture criterion, which is a strain-based criterion obtained by Lee and Kuhn, the critical technological parameters were predicted. This study revealed that larger height to diameter ratio and less friction factor can delay the local strain locus to intersect with the Lee-Kuhn's fracture line, delaying the occurrence of the surface crack. Meanwhile, it revealed that the initial relative density affects little on the forming of the crack. And the results of the finite element method agreed well with the experiment results of Lee and Kuhn.

源语言英语
页(从-至)24-27, 141
期刊Transactions of Nonferrous Metals Society of China (English Edition)
8
1
出版状态已出版 - 3月 1998
已对外发布

指纹

探究 'Simulation of cylindrical upsetting of porous materials by finite element method' 的科研主题。它们共同构成独一无二的指纹。

引用此