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Structural Engineering and Mechanics Volume 15, Number 6, June 2003 , pages 653-668 DOI: https://doi.org/10.12989/sem.2003.15.6.653 |
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A study of the nonlinear dynamic instability of hybrid cable dome structures |
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Seung-Deog Kim, Hyung-Seok Kim and Moon-Myung Kang
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| 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. | ||
| Key Words | ||
| hybrid structure; cable dome; indirect buckling; nonlinear; initial imperfection; phase plane; chaos. | ||
| Address | ||
| Department of Architectural Engineering, Semyung University, Jecheon 390-711, Korea Department of Architectural Engineering, Kyungpook National University, Daegu 702-701, Korea | ||