摘要
本文讨论了结构动力修改的基本原理，结合机枪冲击响应的实际需要，推导了基于试验模态分析的广义结构动力修改方法，并编制了相应的计算机软件，通过某机枪的实例验证了理论和软件．
In this paper，the primary principle of structural dynamic modification is discussed．Combined with the actual request of the shock response of the ma- chinegun，the method of generalized structural dynamic modification，which based on experimental modal analysis，is developed，and the related software is worked out．By the digital example of a machinegun，the theory and software are verified．
关键词
试验模态分析
轻武器
结构动力修改
xperimental modal analysis；light weapon；structural dynamic modi- fication
