结构非平稳随机响应的混合型精细时程积分

High-Precision Integration of Mixed Type for Analysis of Non-Stationary Random Responses

演变随机激励的调制函数取各种不同形式时，相应的虚拟激励对应精细时程积分的不同形式。混合地应用这些形式于结构响应时变功率谱分析，可高效地获得达到计算机精度的数值结果。

Based on the pseudo excitation algorithm for nonstationary random resPOnses,a number of high-precision quadratures are developed corresPOnding to various evolutionary random excitations.A mixed use of such quadratures leads to accurate and very efficient analyses of structural timedependent power spectral densities.