【摘要】 风振动是导致膜结构破坏的重要原因,对风-膜的耦合振动分析是膜结构研究的热点和难点之一,通常采用Newmark法和Newton-Raphson法编程求解.本文采用在ANSYS里建模并附加MATRIX27单元的方法模拟风动阻尼,利用谐波合成法生成随机脉动风速场,对结构进行风-膜耦合振动的时程分析,避免了繁琐的编程,为应用ANSYS研究膜等风敏感结构提供了新的思路.更多还原

【Abstract】 The vibration caused by wind is a critical reason that lead to the membrane structure break, and the study of the interaction between wind and membrane structure is one of hot and difficult subjects. Recently, people generally establish programs to solve the problem by Newmark method together with Newton-Raphson. In this paper, MATRIX27 element was applied to instead of the damping which caused by wind. The spectral representation method was used to simulate the stochastic wind field, and ANSYS software was proposed to analyse the wind-membrane interaction. Thus,this paper not only avoided the heavy task of programming, but also offered a new way to adopt ANSYS to study the wind sensitive structures such as membrane.更多还原