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Dynamic Stability of Cable Domes

by D. Gasparini, Case Western Reserve Univ, United States,
P. Perdikaris, Case Western Reserve Univ, United States,
N. Kanj, Case Western Reserve Univ, United States,
A. Abdallah, Case Western Reserve Univ, United States,
D. Verma, Case Western Reserve Univ, United States,
A. Shah, Case Western Reserve Univ, United States,



Document Type: Proceeding Paper

Part of: Structural Safety and Reliability

Abstract:

The cable domes designed by David Geiger for the gymnastics and fencing arenas for the Olympics at Seoul, Korea, and for the stadium at St. Petersburg, Florida, are geometrically non-linear space trusses. Non-linear restoring forces affect the stability of the dynamic response of such dome systems. Studies on the dynamic stability of a Duffing-type model for the antisymmetric response of a planar cable truss are reported. Parameters which control regions of instability for the case of harmonic excitation are noted. The responses remain bounded in instability regions caused by stiffness non-linearity. The equation of motion was integrated numerically using parameters corresponding to instability regions. No stationary chaotic responses were noted.

Subject Headings: Cables | Domes (structure) | Dynamic structural analysis | Trusses | Space truss | Shell structures | Geometrics | South Korea | Asia | Seoul | Florida | United States

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