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Dominant error localisation in a finite element model of a mechanical structure

✍ Scribed by Q. Zhang; G. Lallement

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
229 KB
Volume
1
Category
Article
ISSN
0888-3270

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✦ Synopsis

The accuracy of the computations involved in predicting the dynamic behaviour of mechanical structures depends on the quality of the mathematical model. In order to improve this quality, a qualitative method allowing the determination of dominant errors in a non-dissipative finite element model is presented.

The method is based on the simultaneous use of the orthonormal relationships satisfied respectively by the eigenmodes derived from the finite element model and from the structure itself. This determination is the first stage in a subsequent parametric readjustment of the finite element model.

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