具有局部非线性元件的结构动力分析  

Dynamic Analysis of Locally Nonlinear Structure by I. H. B. Method

作　　者：刘世龄[1] 田千里[2] 

机构地区：[1]香港理工学院 [2]中国科学院力学研究所

出　　处：《振动工程学报》1991年第4期1-10,共10页Journal of Vibration Engineering

基　　金：国家自然科学基金;香港政府U. K. P. G基金

摘　　要：谐波增量平衡法在描述非线性力时计及多谐分量,是处理强非线性的一个有效方法.在本文中,此法被推广于分析局部非线性结构的稳态响应.被分析的结构分解为若干子结构,所有非线性元件均位于子结构的分界面上.系统的响应用谐波增量平衡法(Incremental Harmonic Balance Method,简称I.H.B法)结合F.F.T.(快速福里哀变换)技术与状态空间的模态综合法分析之.The Incremental Harmonic Balance (I.H.B.) method which accommodates multiple harmonic components in the description of nonlinear forces is an efficient method for handling strong nonlinearities, being extended in the presented paper to analyze the steady response of a locally nonlinear structure. The whole system being analyzed is decomposed into several linear substructures. All nonlinear elements are located at the junction boundaries of substructures. The response of the system is analyzed by the I. H. B. method incorporated with F. F. T. technique and modal synthesis method in state space.

关 键 词：非线性振动 结构振动 结构阻尼 

分 类 号：O322[理学—一般力学与力学基础]