Simulation of yield strength and motion of double-cross universal joint
To ensure the safe and reliable operation of the surface propeller drive device,UG software is used to simulate the motion of the double-cross universal joint,analyze whether there is interference between the various structures of the universal joint and the sphere during the motion process,and calculate the minimum clearance.Finite element analysis software ABAQUS is used to conduct yield strength analysis on the double-cross universal joint.Suggestions for optimizing of the universal joint are proposed based on the simulation results.The motion simulation results show that the total rotation angle of the sphere is 23.3°,which meets the initial design requirements of the universal joint.There is no interference during the operation of the various structures of the universal joint,and the minimum clearance appeared between the double fork and the sphere,which is 0.2 mm.The calculation results of yield strength show that the maximum stress of the entire double-cross universal joint occurs at the intersection of the cross axis,which is 387.9 MPa,far lower than the yield strength limit of the material.