考虑转动激励时结构多维随机振动分析

摘要

把Ansys的强大功能与等效激励相结合,将结构地面地震动的平动和转动加速度激励构造出多维地震动等效激励荷载。采用有限元Ansys程序对结构进行动力分析,应用等效激励法求出结构的随机响应特征,实现了建筑结构在多维地震动激励下的随机振动分析。%In this paper,the author combinated the powerful function of Ansys with the equivalent incentive,constructed the multi-dimension ground motion equivalent excitation loads of the structure,on the base of both translational and rotational acceleration excitation of the seismic surface ground motion.The structure was analyzed on the momentum by using the finite element program of Ansys.and at the same time,the characteristic of random response of the structure was found,as the result of the application of the equivalent excitation method.Finally.the goal of doing random vibration analysis of architectural structure under multi-dimensional ground motion excitation was realized.