Research on Fatigue Crack Growth Test and Numerical Simulation of 20CrMnTi Gear Steel

Junbei Ma; Qinhao Zhang

doi:10.16578/j.issn.1004.2539.2021.10.021

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Research on Fatigue Crack Growth Test and Numerical Simulation of 20CrMnTi Gear Steel

Test·Analysis | 更新时间：2022-11-10

- Research on Fatigue Crack Growth Test and Numerical Simulation of 20CrMnTi Gear Steel
- Journal of Mechanical Transmission Vol. 45, Issue 10, Pages: 132-136(2021)
- 作者机构：
  
  1.山东交通学院汽车工程学院，山东济南 250000
  2.淄博市技师学院交通工程系，山东淄博 255000
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2021.10.021
  CLC：
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马君蓓,张钦淏.20CrMnTi齿轮钢疲劳裂纹扩展试验与数值模拟研究[J].机械传动,2021,45(10):132-136.

Ma Junbei,Zhang Qinhao.Research on Fatigue Crack Growth Test and Numerical Simulation of 20CrMnTi Gear Steel[J].Journal of Mechanical Transmission,2021,45(10):132-136.
马君蓓,张钦淏.20CrMnTi齿轮钢疲劳裂纹扩展试验与数值模拟研究[J].机械传动,2021,45(10):132-136. DOI： 10.16578/j.issn.1004.2539.2021.10.021.

Ma Junbei,Zhang Qinhao.Research on Fatigue Crack Growth Test and Numerical Simulation of 20CrMnTi Gear Steel[J].Journal of Mechanical Transmission,2021,45(10):132-136. DOI： 10.16578/j.issn.1004.2539.2021.10.021.

摘要

为了研究20CrMnTi齿轮钢的疲劳裂纹扩展问题，首先，将材料20CrMnTi制成紧凑拉伸试样，在疲劳拉伸试验机上进行载荷比,R,=0.3的疲劳裂纹扩展试验；然后，应用数值模拟软件Abaqus对疲劳裂纹扩展过程进行数值模拟。结果表明，数值模拟结果和试验结果具有相同的变化趋势，二者的差别在误差允许范围内；数值模拟方法能够很好地描述紧凑拉伸试样疲劳裂纹扩展过程。为20CrMnTi齿轮钢疲劳裂纹扩展过程及疲劳寿命的研究提供了一种有效的试验和模拟分析方法。

Abstract

In order to study the problem of fatigue crack growth of 20CrMnTi gear steel，the material 20CrMnTi is made into compact tensile specimens，and the fatigue crack growth test with load ratio R=0.3 is carried out on the fatigue tensile testing machine. Then use the numerical simulation software Abaqus to numerically simulate the fatigue crack growth process. The results show that the numerical simulation results and the experimental results have the same changing trend，and the difference between the two is within the allowable range of error. The numerical simulation method can well describe the fatigue crack growth process of compact tensile specimens. The research results provide an effective test and simulation analysis method for the study of the fatigue crack growth process and fatigue life of 20CrMnTi gear steel.

关键词

20CrMnTi疲劳裂纹扩展疲劳寿命疲劳裂纹扩展速率裂纹尖端应力强度因子

Keywords

20CrMnTiFatigue crack growthFatigue lifeFatigue crack growth rateCrack tip stress intensity factor

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