Finite element dynamic model updating using modal thermoelastic fields

被引:4
|
作者
Humbert, L [1 ]
Thouverez, F [1 ]
Jezequel, L [1 ]
机构
[1] Ecole Cent Lyon, Dept Mech Engn, UMR 5513, F-69131 Lyon, France
关键词
D O I
10.1006/jsvi.1999.2411
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
In this paper, the use of thermoelastic measurements to improve a finite element model is investigated. The originality of the procedure lies in the use of this stress sum field measurement and in the new solution method of the modelling error location stage. Measurement inaccuracies and expansion errors are taken into account through an inequality constraint. Finally, the correction stage is done owing to a variable metric Gauss-Newton method. This updating process has been applied to modal thermoelastic measurements carried out on a thin plate bending with different kinds of defects (C) 1999 Academic Press.
引用
收藏
页码:397 / 420
页数:24
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