Wear Reliability Optimization Design of Helical Gear based on Non-probabilistic Model
To solve the problem of wear reliability optimization design of helical gear with data poorness,in this paper,a non-probabilistic interval model was used to describe the uncertainty parameters,and a wear reliability optimization design method of non-probabilistic model-based helical gear was proposed based on the Hertz contact theory and Archard wear theory.Firstly,a finite element analysis model of helical gear tooth surface wear was established to analyze contact stresses and wear damage of master driv-ing gear tooth surface in the process of gear engagement.Then,considering the uncertainty of gear geom-etry,material properties and loading conditions,a reliability optimization model with the constraints of non-probabilistic reliability indexes of contact strength and wear was established and solved.The results show that the volume of the gear pair is reduced by 25.11％,and the wear is reduced by 16.09％under the constraints of the non-probabilistic reliability index,which verifies the effectiveness of the method proposed in this paper.
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