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http://dx.doi.org/10.12989/sem.2003.15.6.653

A study of the nonlinear dynamic instability of hybrid cable dome structures  

Kim, Seung-Deog (Department of Architectural Engineering, Semyung University)
Kim, Hyung-Seok (Department of Architectural Engineering, Kyungpook National University)
Kang, Moon-Myung (Department of Architectural Engineering, Kyungpook National University)
Publication Information
Structural Engineering and Mechanics / v.15, no.6, 2003 , pp. 653-668 More about this Journal
Abstract
Many papers which deal with the dynamic instability of shell-like structures under the STEP load have been published. But, there have been few papers related to the dynamic instability of hybrid cable domes. In this study, the dynamic instability of hybrid cable domes considering geometric nonlinearity is investigated by a numerical method. The characteristic structural behaviour of a cable dome shows a strong nonlinearity, so we determine the shape of a cable dome by applying initial stress and examine the indirect buckling mechanism under dynamic external forces. The dynamic critical loads are determined by the numerical integration of the nonlinear equation of motion, and the indirect buckling is examined by using the phase plane to investigate the occurrence of chaos.
Keywords
hybrid structure; cable dome; indirect buckling; nonlinear; initial imperfection; phase plane; chaos;
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