Iterative finite element model updating in the time domain

被引：15
|
作者：
Hernandez, Eric M. [1 ]
Bernal, Dionisio [2 ]
机构：
[1] Univ Vermont, Coll Engn & Math Sci, Sch Engn, Burlington, VT 05405 USA
[2] Northeastern Univ, Dept Civil & Environm Engn, Ctr Digital Signal Proc, Boston, MA 02115 USA
来源：
MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2013年 / 34卷 / 1-2期
关键词：
Finite element model updating; Structural dynamics; Parameter estimation; State observer; Iterative methods; Time series;
D O I：
10.1016/j.ymssp.2012.08.007
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
An iterative time domain formulation for finite element model updating in structural dynamics is presented. The approach is supported on a derivation showing that the discrepancy between observations and model predictions can be expressed as a convolution between the state of the system and a sequence of pseudo-Markov parameters which are linear in the change of the free parameters. The approach is illustrated by updating all the stiffness and damping parameters of a twenty degree of freedom shear beam using four noise contaminated measurements. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：39 / 46
页数：8
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