摘要
文中运用理论计算和实验测试两种方法,对惯性制导平台台体进行了模态分析,得到了结构的固有频率和振型。结果表明,实验结果与有限元计算结果基本吻合,验证了本文对台体结构所做的有限元力学模型简化是合理的,有限元计算结果较为准确,从而为以后利用理论计算对台体结构进行动力修改及优化设计奠定了基础。
In this paper,methods such as theoretical calculation and experimental test are excised to proceed modal analy- sis for inertial platform,and then natural fixed frequency and modal shape of inertial platform are given.It is proved that the outcome of theoretical calculation and experimental test are uniform basically.It is can be verified that the finite element mechanics model simplification in this paper is reasonable,and the finite element calculation is accurate relative- ly.So a base for the further dynamic modification and optimal design for the inertial platform by using finite element is provided.
出处
《弹箭与制导学报》
CSCD
北大核心
2004年第S6期334-337,共4页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
惯性平台
结构
模态分析
inertial platform
structure
modal analysis
