• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 1992, Vol. 28 ›› Issue (3): 90-96.

• 论文 • 上一篇    下一篇

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刚塑性变分原理的新形式及有限元法

李赞;李尚健;肖景容   

  1. 华中理工大学
  • 发布日期:1992-05-01

A NEW RIGID-PLASTIC VARIATIONAL PRINCIPLE AND FINITE ELEMENT METHOD

Li Zan;Li Shangjian;Xiao Jingrong   

  1. Huazhong University Science and Technology
  • Published:1992-05-01

摘要： 为了模拟刚性区域很大的金属塑性成形过程，本文对刚塑性的Miss本构方程作了修正，提出了新的数学模型。在此基础上，推导出刚塑性变分原理的新形式、严格的最小值原理及驻值解的唯一性原理，并给出了对应的有限元法，模拟了汽车轮胎螺母冷挤压全过程。

关键词: 模拟, 模型, 塑性, 有限元法

Abstract: In this paper, we revised Mises constitutive equation for rigid-plastic deformation and recommended a new yield strength model. Based on this assumption a new rigid-plastic varational principle and the strictly functional minimum theorem and the theorem on single stationary solution were derived, and the relative finite element method was obtained, and the cold extrusion process of truck type nut has been simulated by computer.

Key words: 模拟, 模型, 塑性, 有限元法

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