Finite Element Simulation Analysis of Flexible Wheel Parameters of Robot Harmonic Reducer

Aiming at the phenomenon of stress concentration affecting the service life of the flexible wheel of harmonic reducer, ANSYS finite element statics method is used to simulate it. Based on the Design Expert software, Box-Behnken experimental design and response surface method were applied to optimize the three parameters of flexwheel wall thickness, cylinder length and arc radius at the connection between tooth and cylinder, and the artificial gorilla optimization algorithm was used to correct the results of the actual factor regression equation of response surface method. The influence of these three parameters on the maximum equivalent stress of the flexwheel of the harmonic reducer is studied. The results show that the effect of the maximum equivalent stress on the flexwheel of harmonic reducer is the length of cylinder, the wall thickness and the radius of the circular arc at the joint of the cylinder. After modification, the optimal dimensions of cylinder length, wall thickness and arc radius at the joint of cylinder are 49mm, 0.55mm and 8.516mm, respectively. At this time, the minimum maximum equivalent stress is 226.1963MPa, and the prediction error is 3.2% verified by ANSYS simulation experiment.