バイリニアー履歴系の応答性状と塑性率に関する基礎的検討

概要

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This paper discusses about the response charactersistics of a system with bilinear hysteresis, focusing on the relationship between the resulting ductility factors and response reduction. First of all, the steady-state response of a system exhibiting a bilinear hysteresis subjected to a sinusoidal excitation is considered. Based upon the responses obtained from the numerical dynamic analysis, the resulting equivalent viscous damping ratios are evaluated br several ductility factors by the equivalent linearization technique, considering the relation between the excitation frequency and resulting equivalent natural frequency The result tells us that a ductility factor of two would provide the hystereses with the largest damping ratio. Then, the responses of bilinear hystereses subjected to real seismic excitations are discussed. In this case, with the damping ratios of around two, both of the displacement and acceleration responses would be reduced.
一般社団法人日本建築学会の論文
2009-03-27