FAST Handling Robot Stiffness Analysis Based on Finite Element Simulation

The robot described in this paper is used to transport the FAST feed receiver; its lifting part is a spatial multi-bar mechanism; in order to achieve accurate positioning in the transport and avoid deformation caused by large load and thus affecting the normal operation of the mechanism, the whole mechanism needs to have good stiffness. To analyze the stiffness of such complex mechanical mechanism, finite element method can be used for simulation. Based on Abaqus finite element software, the stresses and deformations of the handling robot, especially its lifting system, were analyzed under rated working conditions; the stresses and overall deformations of key parts of the lifting system were obtained. The analysis results showed that the maximum stress and deformation of the lifting system did not exceed the predefined targets. The obtained analysis results provide an important reference for the actual performance of the lifting system.