Finite element simulation for effect of loading on HCF life scatter

YANG Xiao-guang; MIAO Guo-lei; HAN Shi-wei; SHI Duo-qi

doi:10.13224/j.cnki.jasp.2016.12.014

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Finite element simulation for effect of loading on HCF life scatter

更新时间：2026-07-07

- Finite element simulation for effect of loading on HCF life scatter
- Vol. 31, Issue 12, Pages: 2928-2932(2016)
- 作者机构：
  
  1. 北京航空航天大学能源与动力工程学院,北京,100191
  2. 先进航空发动机协同创新中心,北京,100191
- 作者简介：
- 基金信息：
- DOI：10.13224/j.cnki.jasp.2016.12.014
  CLC：
- Published：2016
- 稿件说明：
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杨晓光, 苗国磊, 韩世伟, 石多奇. 载荷水平对HCF寿命分散性影响的有限元模拟[J]. 航空动力学报, 2016, 31(12): 2928-2932.

doi: 10.13224/j.cnki.jasp.2016.12.014
杨晓光, 苗国磊, 韩世伟, 石多奇. 载荷水平对HCF寿命分散性影响的有限元模拟[J]. 航空动力学报, 2016, 31(12): 2928-2932. DOI： 10.13224/j.cnki.jasp.2016.12.014.

doi: 10.13224/j.cnki.jasp.2016.12.014 DOI：

摘要

给出了基于晶体塑性理论的高循环疲劳（HFC）寿命分散性有限元模拟方法.针对典型钛合金TC4的微结构特征，采用Voronoi方法建立其晶粒模型，建立钛合金晶体塑性本构方程，计算模拟了应力水平对疲劳寿命分散性的影响，给出表征疲劳寿命分散性的参数.结果表明：应力水平越低，疲劳寿命越长，疲劳寿命的分散性越大，与实验规律一致.

Abstract

The finite element simulation method of high cycle fatigue(HCF) life scatter based on crystal plasticity theory was introduced. According to the features of microstructure of typical titanium alloy TC4

the grains model was established by Voronoi method. Combining the crystal plasticity constitutive equations of titanium alloy

the simulation of the effect of stress level on the fatigue life scatter was performed. The parameter of fatigue life dispersion was given. Results show that

the fatigue life is longer and the life is more dispersed as the loading decreases.

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Related Institution

Inspection Center of Materials, Beijing Institute of Aeronautical Materials

Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation， Beijing Institute of Aeronautical Materials， Aero Engine Corporation of China

The State Key Laboratory of Nonlinear Mechanics， Institute of Mechanics，Chinese Academy of Sciences

Beijing Institute of Aeronautical Materials， Aero Engine Corporation of China

南京航空航天大学能源与动力学院

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