65m射电望远镜天线结构力学分析

65m射电望远镜天线结构力学分析

内容简介：介绍了65m天线结构的基本情况，给出了用于有限元分析的基本矩阵方程和65m天线的载荷和边界条件，根据天线结构形式建立了有限元分析模型，并通过对建立的天线模型进行静力学和动力学分析，得到了在典型仰角下的天线精度和谐振频率。同时，对天线模型进行了强度分析，得到了不同仰角和不同工况下的安全系数。结果表明：天线结构在给定条件下能够满足设计需要，不会产生破坏，为该工程的结构设计提供了依据。

Abstract：The basic status of 65 m antenna structure is introduced,and the basic matrix equations of FEA with load and boundary conditions of 65 m antenna are provided. According to the structural form, the FEA model is built. With the statics analysis and dynamics analysis to the antenna model, the resonance frequencies and accuracy of antenna structure at typical elevation angles are obtained. Mean while, with the strength analysis to antenna model, the strength safety coefficients of antenna structure at different elevation angles and operating conditions are obtained. The results show that the antenna structure can meet the design requirements at given conditions, and no breakages can occur. And the conclusion provides warrant for structure design of the project.

作者：米宏伟, 刘国玺, 郑元鹏, 张亚林,

关键词：65, m天线, 静力学, 动力学, 精度, 谐振频率,