摘要
导弹的动力分析是导弹设计中的一个重要环节,工程中常用非均匀梁作为动力分析的简化模型显然不够精确。本文采用了按照导弹实际尺寸建立的三维模型,而且动力模型中在舱段连接处引进了虚梁元,以考虑导弹舱段连接刚度的影响,进行固有特性分析。计算结果表明考虑舱段连接刚度后的固有特性计算值与实际值比较吻合。本文采用的方法对导弹进行动力分析时可推荐应用。
The dynamic analysis of missiles is one of the most important parts in the design process. In the formal time, a heterogeneous beam as a model is recommended during analyzing the inherent behavior of missile. Obviously, it is not accurate. In the paper, an improved 3-D model is provided. One of the improvements is to build a 3-D model according to the real size of missile. Another is that the connecting rigidity between cabins has been considered in the model. The result has shown that these consideration are necessary if the accurate and reliable response is expected.
出处
《强度与环境》
2006年第1期14-17,共4页
Structure & Environment Engineering
关键词
非均匀梁
虚梁元
连接刚度
固有特性
heterogeneous beam
imaginary beam
connecting rigidity
inherent behavior
