Arbitrary discontinuities in finite elements

被引：22
|
作者：
Belytschko, T [1 ]
Moës, N [1 ]
Usui, S [1 ]
Parimi, C [1 ]
机构：
[1] Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA
来源：
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING | 2001年 / 50卷 / 04期
关键词：
finite elements; fracture; fasteners; jointed rock;
D O I：
10.1002/1097-0207(20010210)50:4<993::AID-NME164>3.0.CO;2-M
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A technique for modelling arbitrary discontinuities in finite elements is presented. Both discontinuities in the function and its derivatives are considered. Methods for intersecting and branching discontinuities are given. In all cases, the discontinuous approximation is constructed in terms of a signed distance functions, so level sets can be used to update the position of the discontinuities. A standard displacement Galerkin method is used for developing the discrete equations. Examples of the following applications are given: crack growth, a journal bearing, a non-bonded circular inclusion and It jointed rock mass. Copyright (C) 2001 John Wiley & Sons, Ltd.
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页码：993 / 1013
页数：21
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