A global model reduction approach for 3D fatigue crack growth with confined plasticity

被引：31

作者：

Galland, F. ^{[1
,2
]}

Gravouil, A. ^{[1
]}

Malvesin, E. ^{[2
]}

Rochette, M. ^{[2
]}

机构：

[1] Univ Lyon, CNRS, Inst Natl Sci Appl Lyon, LaMCoS,UMR5259, F-69621 Villeurbanne, France

[2] ANSYS France, F-69100 Villeurbanne, France

来源：

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 2011年 / 200卷 / 5-8期

关键词：

Crack propagation; Closure effect; Small scale yielding; Fatigue; Model reduction; Reduced basis; EXTENDED FINITE-ELEMENT; COMPUTATION; TIP;

D O I：

10.1016/j.cma.2010.08.018

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It has been known for decades that fatigue crack propagation in elastic-plastic media is very sensitive to load history since the nonlinear behavior of the material can have a great influence on propagation rates. However, raw computations of millions of nonlinear fatigue cycles on tridimensional structures would lead to prohibitive calculation times. In this respect, we propose a global model reduction strategy, mixing both the a posteriori and a priori approaches in order to drastically decrease the computational cost of these types of problems. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：699 / 716

页数：18

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