Application of embedded discontinuities for softening solids

被引：46

作者：

Wells, GN

Sluys, LJ

机构：

[1] Delft Univ Technol, Fac Aerosp Engn, Koiter Inst Delft, NL-2600 GA Delft, Netherlands

[2] Delft Univ Technol, Fac Civil Engn & Geosci, Koiter Inst Delft, NL-2600 GA Delft, Netherlands

来源：

ENGINEERING FRACTURE MECHANICS | 2000年 / 65卷 / 2-3期

关键词：

strong discontinuity; embedded crack; plasticity; localisation; enhanced strain;

D O I：

10.1016/S0013-7944(99)00120-4

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Additional, discontinuous functions are added to the displacement field of standard finite elements in order to capture highly localised zones of intense straining. By embedding discontinuities within an element it is possible to effectively model localisation phenomena (such as fracture in concrete) with a relatively small number of finite elements and without resorting to higher-order continuum theories. However, the application of continuum constitutive laws in combination with embedded discontinuities, several unique performance related issues arise. The source of these problems and some remedies are addressed here. Numerical results are compared with smeared type models for brittle fracture. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：263 / 281

页数：19

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