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以滚柱式超越离合器为研究对象,采用赫兹接触理论,对其关键传动部件间的接触应力进行分析研究。通过超越离合器常见两种力学分析模型获得了对应接触副间的正压力P,求得了所对应的赫兹应力值,结合赫兹接触优化理论研究成果,提出了两种力学方法的适用条件。并结合有限元仿真分析得到了反映接触副接触特性的部分参数,如接触压力、滑动距离等,同时验证了两种力学方法的适应性条件。结果表明,考虑摩擦因数的力学分析方法更加适合于理论计算,而理想化的线接触分析模型适合于实际工况计算。从而为进一步了解超越离合器的工作特性及后续的优化设计提供了坚实的理论依据。
Taking Roller overrunning clutch as the research object, the Hertzian contact theory was used to analyze the contact stress between the key transmission components. Through the two common mechanical analysis models of overrunning clutches, the positive pressure P between the corresponding contact pairs is obtained and the corresponding Hertzian stress value is obtained. Combining with the research results of Hertz contact optimization theory, the applicable conditions of the two mechanics methods are proposed. Some parameters such as contact pressure, sliding distance and so on which reflect the contact characteristics of contact are obtained by the finite element simulation. Meanwhile, the adaptability conditions of the two mechanics methods are verified. The results show that the mechanical analysis method considering the friction coefficient is more suitable for theoretical calculation, while the idealized line contact analysis model is suitable for the actual working condition calculation. Which will provide a solid theoretical basis for further understanding of the working characteristics of the overrunning clutch and the subsequent optimization design.