新型组合密封结构设计与密封性能分析OA

To address the severe wear and leakage of conventional combined seals in servo motors under dynamic sealing conditions,a novel combined seal configuration is proposed by exploiting the complementary characteristics of an X-ring,an O-ring and a rectangular ring.A two-dimensional axisymmetric finite-element model is established in ANSYS and used to compare the proposed design with the conventional structure under identical parameters.Based on the contact-stress distribution,the Reynolds equation is inversely solved to obtain the oil-film thickness distribution,from which the leakage rate and friction force are calculated.In addition,an L9(34)orthogonal design is conducted,with leakage rate as the response to quantitatively evaluate the effects of compression ratio,medium pressure and friction coefficient.The results indicate that the proposed structure yields a more reasonable stress distribution,with a 6.9%reduction in leakage and a 2.5%reduction in friction.The orthogonal analysis further shows that medium pressure is the dominant factor,followed by compression ratio,whereas the friction coefficient has the weakest influence.