具任意脱层复合材料梁的非线性谐波响应  

Nonlinear harmonic responses of a composite beam with an arbitrary delamination

作　　者：罗松南[1] 傅衣铭[2] 曹志远[1] 

机构地区：[1]同济大学工程力学与技术系固体力学教育部重点实验室,上海200092 [2]湖南大学工程力学系,湖南长沙410082

出　　处：《计算力学学报》2003年第1期19-22,共4页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金资助项目(19872024).

摘　　要：研究了具任意脱层复合材料梁的非线性谐波响应问题。基于弹性理论,建立了考虑剪切变形时的复合材料梁脱层的基本方程式。在空间上采用B样条函数和Galerkin积分法,在时间上采用增量谐波平衡法进行计算。通过实例计算,得出了简谐力作用下的非线性动力响应曲线。认为基谐波振动仍是非线性振动的主要部分。The nonlinear harmonic responses of a composite beam with an arbitrary delamination through the width are investigated. The governing equations including the transverse shear are deduced on the basis of the elasticity theory. The problem is analysed by Galerkin's integration and B-specimen functions in space domain as well as the incremental harmonic balance method in time domain. Resonance-response cures under the harmonic loads are given in an example and it is demonstrated that the vibration with basic harmonic is still the main part of the nonlinear vibration.

关 键 词：脱层结构 复合材料梁 动力响应 

分 类 号：O323[理学—一般力学与力学基础] O343.5[理学—力学]