摘要
本文将非正交阻尼系统按非经典振型分解,建立了非正交阻尼系统随机动力反应的分析方法,推导出由各非经典振型实部与虚部均方反应迭加求得总反应均方值的公式,并对白噪声输入建立了反应的解析公式.本文所建立的方法适用于计算在地震、风和波浪等随机动荷载作用下诸如土-结构、流体-结构.流体-土-结构以及材料性质不同的组合结构等非正交阻尼耦合系统的动力反应.
In the paper,non-orthogonal damping systems are uncoupled by usingnon-classical models,and a method for analyzing randorn dynamic responses of thesystems is established.Some formulas used for calculating system responses through thereal parts and the virtual parts of non-classical model responses are developed,andthe analytic formulas are achieved under white noise input.The method can be usedfor analyzing dynamic responses of any non-orthogonal damping systems,such assoil-structures,fluid-structures,soil-fluid-structures and structures composed ofvarious materials under seismic,wind and water wave loads.
关键词
非正交
阻尼系统
随机振动
反应
non-orthogonal damping system
non-classical model
random vibration
damping
