Hutchinson模型的塑性后分叉和缺陷敏感性  

PLASTIC POST-BIFURCATION AND IMPERFECTION SENSITIVITY ANALYSIS OF HUTCHINSON'S MODEL

作　　者：程尧舜[1] 卢文达[2] 

机构地区：[1]同济大学 [2]华东工业大学

出　　处：《上海力学》1996年第3期216-221,共6页Chinese Quarterly Mechanics

基　　金：国家自然科学基金

摘　　要：本文通过对Hutchinson模型的初始塑性后分叉和缺陷敏感性的分析,介绍了一个分析塑性后屈曲的一般方法。这一方法非常类似Koiter的弹性后屈曲理论。用这一方法分析缺陷敏感性和初始后分叉的过程是一致的,所得展开式在渐近的意义上是精确的,和数值解符合得相当好。Plastic post-bifurcation and imperfection sensitivity of Hutchinson's model are analyzed in detail to introduce an approach to analyze the plastic post-buckling problems which is similar to Koiter's theory of elastic post-buckling behavior. In this approach, the procedure in the post -bifurcation analysis is the same as in the imperfection sensitivity analysis. The obtained expansions are exact in the asymptotic sense and are in good agreement with the numerical results.

关 键 词：塑性后屈曲 缺陷敏感 H模型 

分 类 号：O344.1[理学—固体力学]