期刊
COMMUNICATIONS IN NUMERICAL METHODS IN ENGINEERING
卷 20, 期 1, 页码 19-29出版社
JOHN WILEY & SONS LTD
DOI: 10.1002/cnm.649
关键词
path-following technique; arc-length control; quasi-brittle solids; energy release; finite-element method; non-linear analysis
A path-following constraint is developed which is based on the energy release during failure. This makes it applicable to the simulation of quasi-brittle materials when no previous knowledge is available on the failure behaviour of a body and, consequently, indirect displacement control methods like CMOD cannot be applied. The constraint is derived from the first principle of thermodynamics for a finite-element discretization of a solid with a continuum damage model. The performance of the constraint is demonstrated by means of a bending test on a single-edge-notched beam. Copyright (C) 2003 John Wiley Sons, Ltd.
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