摘要
本文提出一种修改后的结构的振动特性计算方法;此法利用测量频率响应函数矩阵,将结构的修改量作为作用在结构上的力处理,分析计算出修改后结构的频率响应函数矩阵。其优点是理论简单、计算量小、便于直接指导实际结构修改。
A method for calculating vibration characteristics of a modified structure is proposed. Using the method, the frequency response function matrix of the modified structure is calculated from the measured frequency function matrix, regarding the modified elements as forces acted on the structure. The superiority of the method lies in its simple theory, small amount of computing work and direct guidance for actual structural modification.
出处
《应用力学学报》
CAS
CSCD
北大核心
1990年第3期90-93,150,共4页
Chinese Journal of Applied Mechanics
基金
国家自然科学基金
关键词
结构
修改
频率
响应
动态特性
structural modification, frequency response, dynamic characteristics of structure.
