Research of Stress Intensity Factor of Fatigue Crack of Spur Gear based on Abaqus

Weichi Pei; Jing Chu; Hongchao Ji; Yaogang Li; Jianwei Dong

doi:10.16578/j.issn.1004.2539.2019.02.002

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Research of Stress Intensity Factor of Fatigue Crack of Spur Gear based on Abaqus

Theory·Reserach | 更新时间：2022-10-09

- Research of Stress Intensity Factor of Fatigue Crack of Spur Gear based on Abaqus
- Journal of Mechanical Transmission Vol. 43, Issue 2, Pages: 8-12(2019)
- 作者机构：
  
  1.华北理工大学机械工程学院，河北唐山 063210
  2.北京科技大学机械工程学院，北京 100083
  3.北京科技大学国家材料服役安全科技中心，北京 100083
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2019.02.002
  CLC：
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裴未迟,楚京,纪宏超等.基于Abaqus的直齿圆柱齿轮疲劳裂纹应力强度因子研究[J].机械传动,2019,43(02):8-12.

Pei Weichi,Chu Jing,Ji Hongchao,et al.Research of Stress Intensity Factor of Fatigue Crack of Spur Gear based on Abaqus[J].Journal of Mechanical Transmission,2019,43(02):8-12.
裴未迟,楚京,纪宏超等.基于Abaqus的直齿圆柱齿轮疲劳裂纹应力强度因子研究[J].机械传动,2019,43(02):8-12. DOI： 10.16578/j.issn.1004.2539.2019.02.002.

Pei Weichi,Chu Jing,Ji Hongchao,et al.Research of Stress Intensity Factor of Fatigue Crack of Spur Gear based on Abaqus[J].Journal of Mechanical Transmission,2019,43(02):8-12. DOI： 10.16578/j.issn.1004.2539.2019.02.002.

摘要

应力强度因子是研究断裂问题的重要参量，可以度量和控制裂纹的发生发展，对研究裂纹的疲劳损伤及预估寿命具有重要意义。为了研究直齿圆柱齿轮三维裂纹应力强度因子的变化规律，利用Abaqus建立了含半椭圆形初始裂纹的三维有限元模型，计算了半椭圆形裂纹前缘应力强度因子，分析了裂纹大小、形状以及载荷变化对裂纹前缘应力强度因子的影响规律。结果表明，齿根裂纹在扩展过程中主要表现为张开型裂纹；随着载荷的增大，应力强度因子,K,I,不断增大，但其分布规律保持不变；在载荷不变的情况下，,K,I,随着裂纹尺寸的增大而增大；在建立的半椭圆形裂纹中，随着长轴的增加，裂纹前缘上的,K,I,波动逐渐变小。

Abstract

The stress intensity factor is an important parameter to study the fracture problem. The occurrence and development of gear cracks can be measured and controlled， which is of great significance for studying the fatigue damage of cracks and predicting life. In order to study the variation law of three-dimensional crack stress intensity factor of spur gears， a three-dimensional finite element model with initial semi-elliptical cracks is established by Abaqus software. The stress intensity factor of the semi-elliptical crack front is calculated， and the influence of crack size， shape and load variation on the stress intensity factor at the leading edge is analyzed. The results show that the cracks of the roots of the teeth mainly manifested as open cracks during the expansion process. As the load increases， stress intensity factor ,K,I, also increases， but its distribution rules remain unchanged. With constant load， ,K,I, increases with the increase of crack size. In the establishment of semi-elliptical cracks， as the long axis increases， the ,K,I, fluctuations on the crack front gradually become smaller.

关键词

应力强度因子Abaqus裂纹扩展有限元模型

Keywords

Stress intensity factorAbaqusCrack propagationFinite element model

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