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Mode localization due to asymmetric structural changes

✍ Scribed by Hong-Jun Liu; Ling-Cheng Zhao

Book ID
104268713
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
471 KB
Volume
65
Category
Article
ISSN
0045-7949

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✦ Synopsis

The asymmetric effect on mode localization of a symmetric structure possessing nearly equal frequencies is analyzed. A reduction solution for nearly equal frequency perturbation is used to relate modes of a perturbed (asymmetric) structure and modes of original (symmetric) structure. A simple criterion for the occurrence of mode localization is derived for a symmetric structure with attached members of substructures. Numerical results of illustrative examples confirm that the criterion is valid and useful for selecting structural parameters in design work.

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