摘要
以鱼雷热动力发动机机体为例,用PATRAN有限元分析软件为平台,建立机体3D实体模型,对机体结构进行约束模态和自由模态分析,获得机体结构的模态参数。通过模态研究,分析了鱼雷热动力发动机机体固有振动特性,以及各结构参数对振动传递及噪声辐射的影响,为鱼雷热动力发动机的减振设计奠定基础。
A three-dimensional solid model of torpedo thermal power engine is established with the finite element analysis software PATRAN . The engine structure is analyzed, and then the structural modal parameters are obtained by using finite element method in tile cases of constrained modality and free modality. Furthermore, the natural vibration characteristics of torpedo thermal engine are analyzed, as well as the influence of structural parameters on vibration transfer and radiation noise. The research is expected to lay a foundation for the vibration reduction design of torpedo thermal power engine.
出处
《鱼雷技术》
2005年第4期17-20,共4页
Torpedo Technology
关键词
模态分析
自由模态
约束模态
modal analysis
flee modality
constrained modality
