摘要
基于多自由度体系的惯性力方程,把最大惯性力加到体系质点位置,以此受力为依据,求出质点处的位移。根据各质点处位移变形协调条件,得出各质点处位移的相互关系,进而求出结构中质点的自振频率。此法对求解多自由度体系的自由振动,与传统方法相比具有方法简便、便于掌握等特点。
Based on the inertia - force equation of multi - degree of freedom system, add the biggest inertia force to the position of mass - spring. Based on this state, the displacement of the mass - spring is given. According to the deformation compatibility condition, the co - relation of the mass - springs are obtained. Then the self - vibration frequency of multi - degree of freedom can be achieved. It is easy to solve the free vibration of the system of multi - degree of freedom. This method is not only portable but also easy to understand.
出处
《地下水》
2009年第2期117-119,共3页
Ground water
基金
安徽省教育厅自然科学基金项目(KJ2008A143)
关键词
惯性力
自振频率
多自由度
Inertia force, Self- vibration frequency and multi -degree of freedom