Contact stress calculation of high transverse contact ratio spur and helical gear teeth
Contact stress calculation of high transverse contact ratio spur and helical gear teeth
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DOI：
10.1016/j.mechmachtheory.2013.01.013
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发表时间：
2013-06
影响因子：
5.2
通讯作者：
Miryam B. Sánchez;J. I. Pedrero;M. Pleguezuelos
中科院分区：
文献类型：
--
作者：
Miryam B. Sánchez;J. I. Pedrero;M. Pleguezuelos
对于正齿轮和斜齿轮的接触应力计算，赫兹方程可以与沿着接触线的载荷分布模型结合使用。由于齿对的刚度沿接触路径沿着变化，该载荷分布是不均匀的，并且对计算中要考虑的临界接触应力的位置和值具有决定性影响。此外，对于非标准齿轮传动条件，载荷分布会受到很大影响，因为存在底切、增大的齿顶或减小的中心距，这些通常存在于高横向重合度齿轮中。本文提出了一种计算横向重合度大于2的直齿轮和斜齿轮接触应力的新方法。它是基于赫兹方程和一个增强模型的负载分布，从最小弹性潜力的标准，适用于非标准的齿轮条件。对临界载荷条件和临界接触应力值进行了全面的研究。因此，建议点蚀负荷能力的计算。
For contact stress calculations of spur and helical gears, the Hertz equation can be used in combination with a model of load distribution along the line of contact. This load distribution is not uniform due to the changing rigidity of the pair of teeth along the path of contact and has decisive influence on the location and the value of the critical contact stress to consider for calculations. Moreover, the load distribution can be highly influenced for non-standard gearing conditions as the presence of undercut, enlarged tooth addendum or reduced center distance, often present in high transverse contact ratio gears. In this paper, a new calculation method of the contact stress of spur and helical gears with transverse contact ratio greater than 2 is developed. It is based on the Hertz equation and an enhanced model of load distribution, obtained from the minimum elastic potential criterion, suitable for non-standard gearing conditions. A complete study on the critical load conditions and the value of the critical contact stress has been carried out. As a result, a recommendation for pitting load capacity calculations is proposed.