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FINITE ELEMENT DYNAMIC MODEL UPDATING USING MODAL THERMOELASTIC FIELDS

โœ Scribed by L. HUMBERT; F. THOUVEREZ; L. JEZEQUEL

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
488 KB
Volume
228
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

In this paper, the use of thermoelastic measurements to improve a "nite element model is investigated. The originality of the procedure lies in the use of this stress sum "eld 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 di!erent kinds of defects 1999 Academic Press * *t "r#k GG !3K ยน * GG *t (6) MODEL UPDATING USING THERMOELASTIC DATA

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