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[توسط کاربر]
[مهندسی مکانیک]

This paper introduces an elastic predictor=return mapping integration algorithm for a simpli
ed of the Lemaitre ductile damage model, whose return mapping stage requires the solution of only one scalar non-linear equation. The simpli
ed damage model diers from its original counterpart only in that it excludes kinematic hardening. It can be used to predict ductile damage growth whenever load reversal is absent or negligible—a condition met in a vast number of practical engineering applications. The one-equation integration scheme proves highly ecient in the
nite element solution of typical boundary value problems, requiring computation times comparable to those observed in classical von Mises implementations. This is in sharp contrast to the previously proposed implementations of the original model whose return mapping may require, in the most general case, the solution of a system of 14 coupled algebraic equations. For completeness, a closed formula for the corresponding consistent tangent operator is pre

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اسناد حمل

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[توسط کاربر]
[مهندسی مکانیک]

elastic predictor