关键词: 结合面；有限元分析；密封；漏油试验

Abstract: View of the oil leakage phenomenon near the bolt sealing surface in two places of the durability feedback of a hybrid gearbox bench test, the nonlinear contact finite element simulation analysis of the bolt joint surface here is carried out under two harsh conditions. According to the surface pressure and opening of the simulation joint surface, the rationality of the theoretical sealing surface design is determined, and the sealing performance is improved by changing the processing technology and gluing technology of the joint surface of the box body, the oil leakage test is verified by special loading test, and the oil leakage disappeared. The solution of this problem proves the feasibility of the oil leakage simulation and optimization method of the gearbox sealing surface, and provides a basis for the design and solution of the shell seal.

Key words: Joint surface; Finite element analysis; Sealing; Oil leakage test