バイリニア型履歴をもつ1自由度系のランダム応答

概要

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This paper deals with the nonlinear random response of the single-degree-of-freedom system with elasto-plastic hysteretic characteristic, when subjected to Gaussian white excitations. The analysis aims at finding the approximate solutions for displacement, velocity, ductility factor and cumulative ductility factor in closed forms. The displacement is decomposed into the shift of the center of oscillation and the deformation about its displaced center. The former is regarded as the diffusion process and estimated by the random walk theory. The latter is evaluated by taking account of the equivalent frequency together with the concept, of the energy balance. The approximate solutions are compared with the digital estimates. The agreements between the both are satisfactory in most cases. The relations between the ductility factor and the cumulative ductility factor are investigated. The relations between the maximum elastic and inelastic responses are examined.
社団法人日本建築学会の論文
1991-02-28