自由振動解を用いた非線形系のエネルギー応答推定に関する基礎的研究 : 周期外乱に対するDuffing系のエネルギー応答

概要

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This paper aims to bridge the gap between the nonlinear vibration theory and the energy approach for the seismic design of buildings, and to find out some novel principle for the energy-based method to estimate the nonlinear dynamic response. A characteristic curve that represents the relation between the energy level and effective resonance period of the nonlinear dynamic system is presented, and the energy response of Duffing's oscillator is discussed in detail through the numerical integration of the equation of motion. The comparison between these results reveals that this characteristic curve can account for the typical behavior of nonlinear vibration in association with the energy input characteristic of acceleration wave.
社団法人日本建築学会の論文
2005-01-30