某雷达基座的有限元分析

摘要

基座是雷达天馈系统和分机的安装基础，其结构刚强度能否满足技术要求，对雷达整体性能有着重要影响。在结构总体设计工作中，有必要对基座的应力应变以及固有频率进行研究。文中以某气象雷达天线座基座为研究对象，以其加强筋的厚度和数量作为变量，对基座进行静力学和模态分析，通过研究这两个变量与基座应力、应变和固有频率的关系，为基座的设计提供了一定的理论依据。%Pedestal is the foundation of radar antenna and some subsystem , whether its structure stiffness and strength satisfy the technical requirements will have great influence on the performance of radar .It is necessary to study the stress , strain and natural frequency of the pedestal in the structure system design .This paper stud-ies the pedestal of a weather radar .Taking the thickness and number of reinforcing ribs as variables , static anal-ysis and mode analysis of the pedestal are carried out .The relationship between this two variables and the stress , strain and natural frequency is studied , providing certain theory foundation for the design of the pedestal .