摘要
提出了一种应用线弹簧模型分析裂纹梁固有频率响应的新方法．该方法是建立在古典的Ｅｕｌｅｒ－Ｂｅｒｎｏｕｌｉ梁理论、现代的模态分析和断裂力学等成就基础上的综合性方法．利用该方法导出了悬臂裂纹梁振动的特征方程，求解这个方程，建立了固有频率与裂纹位置、长度间关系．本文的计算结果与现有结果基本一致．
In this paper a new method was proposed to analysis the natural frequency responses of cracked beams by using Line Spring model. The method was a comprebensive one based on the classical Euler Bernoulli beam theory, modern modal analysis and fracture mechanics. A charactristic equation for a cracked cantilever was derived by means of method. The relationships between the natural frequency and the crack position or crack length by solving the cquation, the present results obtained are in exiellent agreement with available results.
出处
《华东交通大学学报》
1996年第2期48-54,共7页
Journal of East China Jiaotong University
