蜗杆, 有限元, 应力, 齿间载荷分配

Based on the elastoplasticity contact finite element theory,

 a multi-group static and dynamic contact stress analysis models suitable for the worm gears were established. The influences of the load and parameters on the coefficient of load sharing among teeth and contact stress distribution were studied. The relationship between the number of teeth in the meshing and the maximum coefficient of load sharing among teeth under different loads was calculated.The results indicate:the load distribution tends to be even along with load enlargement; the contact stress distribution along the contact line like “L” or “U”;the influence of parameters on the stress can not be neglected,it is feasible that parameter optimized aimed at stress hypodispersion by contrasting the finite element analysis results.Under 0.05~1.5 times the rated torque, the maximum coefficients of load sharing among the teeth are obtained when the number of meshing teeth is 3,5,7 respectively.