HIGH EFFICIENCY ALGORITHM SERIES OF RANDOM VIBRATION AND APPLICATIONS

摘要

The Pseudo Excitation Method (PEM) for analyzing structural stationaryon-stationary random responses is outlined. As any stationary random response analysis is converted to harmonic response analyses, while any evolutionary non-stationary random response analysis is converted to step-by-step integration computations, this method is simple to use. It is accurate because both the cross-modal and cross-excitation terms are included. Its efficiency is much higher than the traditional methods, therefore complex engineering structures with thousands of degrees of freedom subjected to dozens of fully or partially coherent stationaryon-stationary excitations can be computed easily on ordinary personal computers.