弹塑性结构的动力学塑性变形的上界

本文借助于虚载荷方法讨论了弹性完全塑性结构在动载荷下塑性变形的上界问题,结出了塑性变形的上界估计式.同时,在假设分段线性加载面的情况下,将结果推广到线性强化结构.此外,本文还给出一例,将所得结果与精确解进行了比较,表明本文的结果有较大的实用价值.

Upper Bourds on Dyhamic Plastic Deformations of Elasto-Plastic Structures

This paper deals with the suitable measures of bounding on plastic deformations of elastic-perfectly plastie structures subjected to dynamic loadings by using fictitious load method.The upper beands on plastic deformation are given in some inequalities.The results achieved are extended to elastic work-hardening material under the assumption of a piecewise linear yieid surface.As the application of the achieved results,an example is given.The results of this example are compared with the accuracy results,The comparison shows that the achieved results in this paper are of great practieal use.