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

页码：39 / 46

页数：8

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