接触问题的弹塑性有限元及其安定性分析

ELASTOPLASTIC CONTACT AND SHAKEDOWN ANALYSIS BY USING THE FINITE ELEMENT METHOD

本文基于文献[1]阐述的弹性接触问题柔度矩阵法提出了适合于轴承弹塑性问题分析的增量柔度矩阵解法及省时的安定问题分析法.这种方法可用于多种接触边界条件和多面、多体接触问题的接触力、接触宽度以及应力、应变、位移场分析.本文最后给出了一些实例,和经典的 Hertz 理论结果比较,精度是令人满意的.

A solving procedure for the analysis of bearing elastoplastic contact problems and the determinrtion of shakedown limit load under simple cyclic loading is presened in this paper.Based on the flexbility matrices method described in[1], an incremental method is suggested to analyse elastoplastic contact and shakedown This method needs less computational time to determine the contact area,pressure distribution,and stress distribution,it is also shown to yield accurate results and fit to analyse contsct problems with muti-body o(?)mutiple contact surface.