Influence of Tooth Surface Geometry on Bending Fatigue Life of Face Gear

Yan Hongzhi; Wen Guangxu; Li Chao; Zhou Tengfei

doi:10.16578/j.issn.1004.2539.2015.05.010

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Influence of Tooth Surface Geometry on Bending Fatigue Life of Face Gear

更新时间：2022-10-20

- Influence of Tooth Surface Geometry on Bending Fatigue Life of Face Gear
- Vol. 39, Issue 5, Pages: 26-29(2015)
- 作者机构：
  
  1. 中南大学高性能复杂制造国家重点实验室
  2. 中南大学机电工程学院
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2015.05.010
  CLC：
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[1]严宏志,温广旭,黎超,周腾飞.齿面几何结构对面齿轮弯曲疲劳寿命的影响[J].机械传动,2015,39(05):26-29+45.

Yan Hongzhi, Wen Guangxu, Li Chao, et al. Influence of Tooth Surface Geometry on Bending Fatigue Life of Face Gear. [J]. 39(5):26-29(2015)
[1]严宏志,温广旭,黎超,周腾飞.齿面几何结构对面齿轮弯曲疲劳寿命的影响[J].机械传动,2015,39(05):26-29+45. DOI： 10.16578/j.issn.1004.2539.2015.05.010.

Yan Hongzhi, Wen Guangxu, Li Chao, et al. Influence of Tooth Surface Geometry on Bending Fatigue Life of Face Gear. [J]. 39(5):26-29(2015) DOI： 10.16578/j.issn.1004.2539.2015.05.010.

摘要

基于坐标变换和啮合原理推导出面齿轮齿面方程,建立不同齿面参数（压力角、模数）的面齿轮传动有限元模型,分析了齿面参数对齿根弯曲应力、接触面积的影响以及弯曲应力沿齿高方向、齿宽方向的分布规律。面向磨齿及铣齿齿面粗糙度,根据修正的局部应力应变法计算了不同齿面粗糙度下的疲劳裂纹生成寿命,利用损伤容限设计法对疲劳裂纹扩展寿命进行了预测。研究结果表明,压力角对齿面弯曲疲劳寿命影响明显,尤其是对裂纹扩展寿命影响较大,增大压力角有助于提高齿面弯曲疲劳综合寿命;此外,磨削齿面较铣削齿面有利于提高齿面弯曲疲劳寿命。研究内容可为面齿轮抗疲劳设计提供依据。

Abstract

Based on the coordinate transformation and meshing theory,the tooth surface equation of face gear is deduced.The finite element model of the different parameters（pressure angle,modulus）of face gear transmission is built,the influence of tooth face parameters on tooth root bending stresses,contact area and the distribution rule of bending stresses along the direction of tooth height and width are analyzed.Based on modified local stress-strain method,the fatigue crack initiation life in different roughness of grinding and milling tooth face is calculated.And the fatigue crack propagation life is predicted with damage tolerant design method.The results prove that the pressure angle has a great influence on the tooth face bending fatigue life,especially for the crack initiation life.A larger pressure angle is helpful to improve the tooth face bending fatigue comprehensive life.In addition,grinding method is more conducive to improve the tooth face bending fatigue life than milling method.This study provides a basis for the anti-fatigue design of face gear.

关键词

面齿轮弯曲应力裂纹生成裂纹扩展

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