动态子结构方法及在武器分析中的应用

针对用传统有限元法进行大型复杂结构动力分析所遇到的困难,60年代以来,人们不断地提出了许多行之有效的动态子结构方法.本文在简要回顾这种方法的产生背景基础上,着重于介绍国内外学者对发展最具有代表性的子结构模态综合法所提出的基本改进措施,并通过分析高射机枪动态特性的算例,初步探讨了这种方法在武器分析中的应用前景。

METHODS OF DYNAMIC SUBSTRUCTURE AND ITS APPLICATION IN WEAPON ANALYSIS

To counter the difficulties occurring in the dynamic analysis of the large or complicated struc- ture with the traditional finite element method,many effective methods of dynamic substructure have been advanced constantly since 1960.In this chapter,a brief review of the produce back- ground of this kind of method is given first.The basic improving measures adopted by scholars to the most representative method,the substructure mode synthesis method,are emphatically in- troduced.In addition,the application prospects of the method to the weapon analysis are preliminarily probed through showing a successful example of analysing the dynamic behavior of a anti-aircraft machine gun.