Structural Analysis of a 50-m Pulsar Radio Telescope

A pulsar radio telescope of 50 m in diameter is proposed at Beijing Astronomical Observatory. A fully steerable exposed design of the telescope complying with issued specification is studied. Designed with aid of CAD software, the telescope is then exported into the ANSYS software and analysed there. Divided parts of the whole FEM of the telescope are investigated before being assembled to perform full analysis. In this paper, static and dynamic calculations of the telescope as a whole and its dish as a part are presented. During analyses, significant simplification and substitution are included. Driving systems are represented with MASS element applied with assumed mass, coupling technique is employed, and in order to extract interesting eigenvalues of the whole system, big elastic modulus is assigned to the quadripod to eliminate its ill influence on the extraction process and results.

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