ANALYSIS OF FATIGUE FRACTURE BASED ON PERIDYNAMIC

doi:10.16579/j.issn.1001.9669.2018.04.031

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ANALYSIS OF FATIGUE FRACTURE BASED ON PERIDYNAMIC

更新时间：2022-09-22

- ANALYSIS OF FATIGUE FRACTURE BASED ON PERIDYNAMIC
- Journal of Mechanical Strength Vol. 40, Issue 4, Pages: 954-960(2018)
- 作者机构：
  
  1. 贵州大学机械工程学院
  2. 贵州大学教育部现代制造技术重点实验室
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.04.031
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ANALYSIS OF FATIGUE FRACTURE BASED ON PERIDYNAMIC. [J]. 40(4):954-960(2018)
DOI：

ANALYSIS OF FATIGUE FRACTURE BASED ON PERIDYNAMIC. [J]. 40(4):954-960(2018) DOI： 10.16579/j.issn.1001.9669.2018.04.031.

摘要

近场动力学理论(Peridynamic,PD)用于分析工程材料断裂过程中的裂纹扩展问题,键构成了该理论的本构关系,用键的断裂表示材料断裂,但未能用于材料的疲劳分析。基于Miner线性累积损伤理论改进了键传统的断裂准则,提出了键的疲劳断裂准则,构建了适用于高周疲劳断裂分析的PD疲劳断裂模型。以渐开线标准齿轮为例进行弯曲疲劳分析,结果表明PD疲劳断裂模型的疲劳断裂过程与试验结果是一致的,该模型提供了寿命预测与疲劳裂纹扩展为一体的分析方法。

Abstract

Perdynamic（PD） is used for analyzing crack propagation in engineering material fracture,the bonds constitute to the constitutive relation of the peridynamic,and the broken bonds represent to material fracture,but it can’t be used for the fatigue analysis.Based on the Miner’s linear cumulative damage theory,the bond fatigue break criterion was proposed instead of the old break criterion,the PD fatigue fracture model for high cycle fatigue was constructed.Finally,a bending fatigue fracture analysis was carried out on a standard involute gear,the results show that the fatigue fracture process for gear by PD fatigue fracture model is consistent with experiment,the PD fatigue fracture model provides a method which consists of life prediction and fatigue crack propagation.

关键词

近场动力学高周疲劳键疲劳断裂准则寿命预测疲劳裂纹

Keywords

PeridynamicHigh cycle fatigueBondFatigue fracture criterionLife predictionFatigue crack

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