Abstract
This paper describes an analytical method predicting the dynamic reliability for elastoplastic structure. The proposed mehtod will be discussed in succeeding three reports. First, probabilistic model for analysis is developed by the assumption that the elastic-plastic response to random excitation can be divided in two parts; elastic random response and plastic response based on empirical evidence of symmetrical permanent set. By the analytical model, an approximate solution of first passage time to the yield level during the part of elastic random vibration was obtained, and compared with the results by the Monte-Carlo technique.
