摘要
在结构的动态响应分析中,由于离散结构的自由度很多,各种矩阵的阶数一般都非常高,使得求解需要花费很长时间。为了尽量缩短计算时间,提高计算精度,选择合适的算法显得尤为重要。介绍了直接积分法、模态叠加法、缩聚法和基于简谐激励求解结构动响应的基本原理和特点,并通过分析比较一悬臂梁的动态响应计算结果,总结出这几种方法求解结构动响应的优缺点,从而为求解结构动响应提供参考。
Because of the large number of DOFs of discrete structures ,the high steps of matrix and the great accounts ,there is needs much time to calculating the response in the dynamic response analysis of mechanical systems. It is important to select proper method to save time and improve the precision. Several methods of dynamic response analysis of structures have been introduced,such as the direct integral method,the superpasition method,the Model Reduction method and the method based on harmonic excitation. Summarize the advantage and the shortcoming of those methods through a simulation for a cantilever girder structure ,and give some references for the dynamic response analysis of structures.
出处
《机械设计与制造》
北大核心
2009年第6期12-14,共3页
Machinery Design & Manufacture
关键词
结构动态响应
直接积分法
模态叠加法
缩聚法
简谐激励
Dynamic response of structures
The direct integral method
The superposition method
The model reduction method
Harmonic excitation
