構造物の復元力特性の形状が動的応答に及ぼす影響について

Abstract

There are many loop's shapes in experimentally obtained hysteresis loops of structures. Thus, it is needed to investigate behaviours of these structures under the excitation of earthquakes usingmathematical hysteresis model which can express many shapes of hysteresis loop.In this paper, it is tried to investigate behaviours of structures which have many types ofhysteresis loop under the excitation of white noise. It is shown that the hysteresis area of theloop has much influence on the responses; max. displacement, max. ductility ratio, and if thearea is the same one, the resulting responses are almost the same in spite of its shape.