✦ LIBER ✦

Pseudo-coupled bending-torsion vibrations of beams under lateral parametric excitation

✍ Scribed by E. Dokumaci

Book ID: 104154056
Publisher: Elsevier Science
Year: 1978
Tongue: English
Weight: 289 KB
Volume: 58
Category: Article
ISSN: 0022-460X
DOI: 10.1016/s0022-460x(78)80077-7

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✦ Synopsis

This paper presents a theoretical and experimental study of the dynamic stability of straight uniform beams under lateral parametric excitation. The calculation of the boundaries of stability is based on the finitization of the problem by means of the Rayleigh-Ritz method and application of the small parameter stability criterion to the resulting periodic linear system. An experimental study was carried out on a cantilever beam excited by base motion acting in the largest plane of rigidity of the beam. A close correlation has been established between the calculated and measured boundaries of inst~t~ility by taking into account the non-linear damping characteristics exhibited by the beams tested.

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