LOCALIZATION IN A COSSERAT CONTINUUM UNDER STATIC AND DYNAMIC LOADING CONDITIONS

被引：221

作者：

DEBORST, R ^{[1
]}

SLUYS, LJ ^{[1
]}

机构：

[1] TNO,DELFT,NETHERLANDS

来源：

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 1991年 / 90卷 / 1-3期

关键词：

D O I：

10.1016/0045-7825(91)90185-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Localisation studies have been carried out for an unconstrained, elasto-plastic, strain-softening Cosserat continuum. Because of the presence of an internal length scale in this continuum model a perfect convergence is found upon mesh refinement. A finite, constant width of the localisation zone and a finite energy dissipation are computed under static as well as under transient loading conditions. Because of the existence of rotational degrees-of-freedom in a Cosserat continuum additional wave types arise and wave propagation becomes dispersive. This has been investigated analytically and numerically for an elastic Cosserat continuum and an excellent agreement has been found between both solutions.

引用

页码：805 / 827

页数：23