为解决数据贫乏下斜齿轮磨损可靠性优化设计问题。本文采用非概率区间模型描述不确定性参数，基于Hertz接触理论和Archard磨损理论，提出一种基于非概率模型的斜齿轮磨损可靠性优化设计方法。首先建立了斜齿轮齿面磨损有限元分析模型，分析了齿轮啮合传动过程主动轮齿面接触应力及磨损基本规律。然后考虑齿轮几何尺寸、材料性能、载荷工况的不确定性,最终建立了具有接触强度、磨损量非概率可靠性指标约束的可靠性优化模型并进行求解。结果表明,在满足非概率可靠性指标约束条件下，齿轮副体积减少25.11%，验证了本文所提方法的有效性。

To solve the problem of wear reliability optimization of helical gear with data poorness. In this paper, a non-probabilistic interval model is used to describe the uncertainty parameters, and a wear reliability analysis and optimization design method of gear with non-probabilistic model is proposed based on the Hertz contact theory and Archard wear theory. Firstly, a finite element analysis model of helical gear tooth wear was established to analyze contact stresses and wear damage of driving tooth surface in the process of gear engagement. Then, considering the uncertainty of gear geometry, material properties, and loading conditions, a reliability optimization model with the constraints of non-probabilistic reliability indexes of contact strength and wear is established and solved. The results show that the volume of the gear pair is reduced by 24.92% under the constraints of the non-probabilistic reliability index, which verifies the effectiveness of the method proposed in this paper.

TK221