【摘要】 基于时域复模态分析，提出一种非均匀调制随机激励下系统非平稳响应特性的解析解法，用Ｎｉｉｇａｔａ地震激励模型作了说明．算例与仿真结果吻合良好．更多还原

【Abstract】 Based on the time domain complex modal analysis, an analytical method for finding m.s. response of a time-invariant system under nonuniformly modulated random excitation is suggested. The method is illustrated by an example of a nonstationary response problem subjected to Niigata earthquake excitation. The numerical results obtained coincide very well with simulation results.更多还原