随机振动响应计算的精细积分时域平均法  

Time Domain Averaging of Precise Integration Method for Response of Random Vibration

作　　者：张森文[1] 曹开彬[2] 

机构地区：[1]暨南大学应用力学所,广州510632 [2]中国计算机报,北京100038

出　　处：《振动工程学报》1999年第3期367-373,共7页Journal of Vibration Engineering

基　　金：国家自然科学基金

摘　　要：发展了计算结构随机振动响应的精细积分时域平均法，详细讨论了各种激励作用下系统动力响应的精细积分时域平均，并给出算例。与传统的其它离散积分方法如随机中心差分方法、随机纽马克差分方法等比较，本方法具有非常高的精度和计算效率，特别是能给出速度响应方差计算的良好结果。Based on the precise integration method,the time domain averaging of precise integration method (TAPIM) is developed to calculate the dynamic response of random vibration in this paper. Some numerical examples are calculated. Compared with other tranditional methods, such as the stochastic central deference method or stochastic Newmark deference method, this method prossesses high computation efficiency and can give much more accurate results, especially, can give very good result of the velocity variance. The method can be used to calculate the dynamic response of different random systems.

关 键 词：随机振动 动力响应 精细积分 时域平均 

分 类 号：O324[理学—一般力学与力学基础]