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MODEL REDUCTION BY A SIMPLIFIED VARIANT OF DYNAMIC CONDENSATION

โœ Scribed by N. Bouhaddi; R. Fillod

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
479 KB
Volume
191
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

A simplified variant of exact dynamic condensation is presented. It allows one to improve considerably the Guyan condensation method in direct dynamic analysis or in substructuring. The dynamic effects of the slave (eliminated) degrees of freedom (abr. dof) are taken into account unlike in the Guyan condensation method which later leads in most cases to errors in the computed eigenvalues and eigenvectors. The proposed variant leads to improved precision in the computed eigensolutions in a well defined frequency domain. This method is also easier to apply numerically than the Guyan technique and it can be easily adapted to dynamic substructuring. The examples presented show the usefulness of the proposed method and the performances obtained.

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