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
收藏
页码：699 / 716
页数：18
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