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ON THE SPURIOUS SOLUTIONS IN COMPLEX ENVELOPE DISPLACEMENT ANALYSIS

✍ Scribed by A. SESTIERI; A. CARCATERRA

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
144 KB
Volume
240
Category
Article
ISSN
0022-460X

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✦ Synopsis

Complex envelope displacement analysis seems to be a promising approach to analyze high-frequency structural problems and is expected to be useful to study structural-acoustic coupled problems. However, in the original derivation of the method it was shown the presence of a troublesome spurious solution consisting of a high wavenumber component that would make the envelope approach ine$cient. The elimination of this term is quite simple for one-dimensional systems but, in view of more complex developments, the problem deserves a serious investigation to explain the origin of this contribution and to introduce a simple and general approach to cancel this term in more general applications. In the present paper both these aspects are carefully considered and successfully developed.

2001 Academic Press

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