Random Vibration of Structure with Asymmetrical Hysteresis Loop Characteristic

Abstract

When structure is subjected to excess loading, its response is beyond elastic limit. In such a case, restoring force and displacement relation has hysteresis loop characteristic. If initial load exists, hysteresis loop characteristic has asymmetrical characteristic. In this case, plastic deformation grows up in one direction and displacement response grows up in one direction. In this paper, response of structure having asymmetrical hysteresis loop characteristic is examined. Structure is assumed to be subjected to seismic excitation. The effect of asymmetrical hysteresis loop characteristic on random response of structure is examined.