Effect of low cycle fatigue loading on the crack tip plastic zone of high cycle fatigue crack

LIU Hua-wei; WANG Rong-qiao; HU Dian-yin

doi:10.13224/j.cnki.jasp.2016.10.005

Chinese

您当前的位置：

首页 >

文章列表页 >

Effect of low cycle fatigue loading on the crack tip plastic zone of high cycle fatigue crack

更新时间：2026-07-07

- Effect of low cycle fatigue loading on the crack tip plastic zone of high cycle fatigue crack
- Vol. 31, Issue 10, Pages: 2339-2345(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. 北京航空航天大学航空发动机结构强度北京市重点实验室,北京,100191
  3. 先进航空发动机协同创新中心航空发动机结构完整性和可靠性团队,北京,100191
- 作者简介：
- 基金信息：
- DOI：10.13224/j.cnki.jasp.2016.10.005
  CLC：
- Published：2016
- 稿件说明：
移动端阅览
刘华伟, 王荣桥, 胡殿印. 低周载荷对高周裂纹裂尖塑性区的影响[J]. 航空动力学报, 2016, 31(10): 2339-2345.

doi: 10.13224/j.cnki.jasp.2016.10.005
刘华伟, 王荣桥, 胡殿印. 低周载荷对高周裂纹裂尖塑性区的影响[J]. 航空动力学报, 2016, 31(10): 2339-2345. DOI： 10.13224/j.cnki.jasp.2016.10.005.

doi: 10.13224/j.cnki.jasp.2016.10.005 DOI：

摘要

为探明高低周复合疲劳裂纹扩展中高低周载荷交互作用机理，采用弹塑性有限元模型模拟了含中心裂纹试件在高低周载荷交互作用下裂尖塑性区的变化.结果表明：低周载荷的卸载作用导致高周载荷对应的裂尖反向塑性区明显减小，裂纹闭合水平也因此降低，进而加速裂纹扩展，致使高低周复合疲劳裂纹扩展寿命降低.在此基础上，对比研究了低周载荷应力比、高周载荷应力比、高低周载荷循环比对裂尖反向塑性区的影响.结果表明：随着低周载荷应力比降低、高周载荷应力比增加，循环比的减少，均导致低周载荷的卸载作用增加.

Abstract

To ascertain the loading interaction mechanism of the crack growth under high and low combined cycle fatigue loading

the elastic-plastic finite element numerical simulation method was used to determine the plastic zone of crack tip of the specimens with center crack under high and low combined cycle fatigue loading. It was proven that the unloading of low cycle fatigue loading contributed to the reduction of reversed plastic zone of crack tip corresponding to high cycle fatigue loading. This resulted in the decrease of crack closure level and the increase of crack growth rate

as well as the reduction of crack growth life under high and low combined cycle fatigue loading. The effects of the stress ratio of low cycle fatigue loading

the stress ratio of high cycle fatigue loading

the high cycle fatigue loading number per low cycle fatigue loading on the reversed plastic zone of crack tip were also investigated in contrast. The unloading of low cycle fatigue loading gradually increased along with the decrease of low cycle fatigue loading stress ratios

the increase of high cycle fatigue loading stress ratios

and the decrease of high cycle fatigue loading numbers per low cycle fatigue loading.

关键词

Keywords

references

Views

591

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effect of low cycle fatigue pre-damage on high cycle fatigue strength of TA11 alloy

Prediction of composite fan blade high cycle fatigue weak-link point location

High cycle fatigue life model of nickel-based single crystal superalloys based on critical plane approach

Finite element simulation for effect of loading on HCF life scatter

Effect of foreign object damage on fatigue strength of stainless steel

Related Author

YANG Xiao-guang

YU Hui-chen

ZHAO Peng-tao

LUO Yin-yin

SHI Duo-qi

CHEN Yong

TANG Xu

ZHANG Yukun

Related Institution

Inspection Center of Materials, Beijing Institute of Aeronautical Materials

Collaborative Innovation Center for Advanced Aero-Engine

北京航空航天大学航空发动机结构强度北京市重点实验室

北京航空航天大学能源与动力工程学院

Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics

AI问答

Postal code：100079
Tel：（010）53879206 Email：tmw@bjxintong.com.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09082226号-64 京公网安备11010602201714号
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰