Earthquake Security Analysis of 65 m Radio Telescope Antenna

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.