✦ LIBER ✦

Dynamic instability of shell-like shallow trusses considering damping

✍ Scribed by Seung-Deog Kim; Moon-Myung Kang; Taek-Jin Kwun; Yasuhiko Hangai

Book ID: 104268742
Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 562 KB
Volume: 64
Category: Article
ISSN: 0045-7949
DOI: 10.1016/s0045-7949(96)00141-1

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✦ Synopsis

Many papers which treat the dynamic instability of shell structures under step load have been published, but there are few papers which deal with dynamic buckling under a load with periodic characteristics, especially considering damping. Dynamic buckling behavior under periodic excitation is different from that of step excitation. In this paper, the damping influence on dynamic buckling for shell-like shallow trusses is numerically investigated under up-and-down excitation, that is, step, sinusoidal and seismic excitations, and compared with the static critical load. The results show that, considering the damping, dynamic buckling loads become higher than the case of no damping, and the indirect snapping responds more sensitively than the direct snapping by the damping effect, except in the vicinity of the main resonance region.

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