Designing and Analysis of the Structure of the Circular End-plate for the Columniform Dewar

The dewar is the front end of the receiver system of the radio telescope. Based on the classical plate theory, this paper designed the circular plate of a typical columniform dewar, which is under the mixed load of atmospheric pressure and lateral force due to the gravity of the OMT. The formula for the deflection of the plate under the mixed load is formed here. At the platform of ANSYS, a FEM model is created, which simulates the true load for the dewar. And the field of deformation is calculated, which provides a numerical test for the probability of the structure.