Abstract
The purpose of this paper is to elucidate a structure of the energy input to a building that stationary random vibrates with elasto-plastic behavior under wind forces. An elasto-plastic design method on the basis of energy balance is already put to practical use to a seismic design backed by stability of the energy input by earthquake being confirmed. So, it is important to be elucidated the energy input structure induced wind force to apply an inelastic design method in wind-resistant design. First, a mathematically instruction is explained about relationship a power spectrum density of wind force and the energy input to an elastic system in a stationary random process. Next, inspection by time history analysis of a linear 1-mass system of the presented relation about the energy input is shown. Furthermore, the presented relation between a power spectrum density and the energy input is examined expansion to an elasto-plastic structure.
