【摘要】 文中建立了65 m天线的有限元模型,并介绍了天线的有限元建模组成和各单元类型;对天线进行了地震安全性分析,给出了动力学分析的基本思路与动力学方程;分析了65 m天线在地震作用下的位移、应力时程响应,得出了天线与地基接触点的作用力数值。结果表明:天线在给定地震条件下能够满足设计需要,不会产生破坏,为该工程的结构抗震安全性提供了依据。更多还原

【Abstract】 The finite element analysis(FEA) mode of 65m radio telescope antenna is established.And the FEA mode composition and the element type of the antenna are introduced.The earthquake security of the antenna is analyzed.The basic analysis method of dynamics and dynamics equation are given.The displacement and the transient response of 65 m antenna under the influence of the earthquake are analyzed,too.The action force value on the contact between antenna and ground is obtained.The calculation results prove that the mechanical property of the antenna structure can meet the design requirement without any damage under the given earthquake conditions.These calculations and analyses provide theory evidence for the anti-earthquake security of the 65m antenna engineering.更多还原