Linearized Estimation for Response of Elasto-Plastic Structures Excited by Irregular Waves

The purpose of this paper is to analyze the irregularities of seismic motion imparted into structures in reference with its acceleration amplitude, period and phase content, and to make clear these effects on the response of structures.In this paper, it is discussed that of all irregular waves imparted into a certain elasto-plastic system, the wave having the same period component as apparent natural period Te, which is calculated by structural characteristics, has the most influence on its system. As a result of numerical analysis, it is possible to estimate the response of elasto-plastic structures easily and effectively by making linearized system and sinusoidal excitation wave having apparent natural period Te.