Special virtual fields for the direct determination of material parameters with the virtual fields method.: 1 -: Principle and definition

被引:130
作者
Grédiac, M
Toussaint, E
Pierron, F
机构
[1] Univ Clermont Ferrand, Lab Etudes & Rech Mecan Struct, F-63174 Aubiere, France
[2] Ecole Natl Super Arts & Metiers, Lab Mecan & Proc Fabricat, F-51006 Chalons Sur Marne, France
关键词
anisotropy; heterogeneous stress field; identification; inverse problem; virtual fields method;
D O I
10.1016/S0020-7683(02)00127-0
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
This paper deals with the direct and simultaneous estimation of parameters used in some constitutive laws. Whole-field data captured in mechanical configurations which give rise to heterogeneous stress fields are processed. Since no analytical relationship is available between measured data and unknown parameters, a specific procedure based on a relevant use of the principle of virtual work is proposed. The main advantage is to provide directly the unknown parameters. The main features of the method are described in the paper. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:2691 / 2705
页数:15
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