カオス力学系としてのパッシプな応答制御機構を持つ建築物の非線形挙動に関する基礎的研究

概要

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This paper describes fundamental issues on responses of the new type of structures governed by nonlinear equations using one mass system with nonlinear histeretic curves. Differential equations with terms on nonlinear restoring forces idealized by hard and soft springs were solved directly by Runge-Kutta method and the numerical results were compared with those acquired approximately by combination of linear equation and equivalent spring. Exciting ground motions are sinusoidal waves, El Centre 1940, Hyogo-ken Nanbu Earthquake of 1995 and Miyagi-ken Oki Earthquake of 1978. Finally the author concludes chaotic phenomena often exists in response of this type of structures and viscous damping can be thought effective to control the nonlinear phenomena and to make the system stable.
社団法人日本建築学会の論文
2001-06-30