Numerical Simulation and Fatigue Experiment of 7075 Aluminum Alloy Joint Holes Processed by Compound Strengthening Technology

LIU Yuan; XUE Hongqian; JIN Hongrui; GAO Guoqiang

doi:10.16080/j.issn1671–833x.2019.21.052

您当前的位置：

首页 >

文章列表页 >

Numerical Simulation and Fatigue Experiment of 7075 Aluminum Alloy Joint Holes Processed by Compound Strengthening Technology

更新时间：2025-10-30

- Numerical Simulation and Fatigue Experiment of 7075 Aluminum Alloy Joint Holes Processed by Compound Strengthening Technology
- Aeronautical Manufacturing Technology Vol. 62, Issue 21, Pages: 52-58(2019)
- 作者机构：
  
  1. 西北工业大学机电学院,西安,710072
  2. 航空工业西安飞机工业（集团）有限责任公司,西安,710089
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671–833x.2019.21.052
  CLC：
- Published：2019
- 稿件说明：
移动端阅览
刘渊，薛红前，靳泓睿，高国强. 7075铝合金连接孔复合强化数值模拟及疲劳试验研究[J]. 航空制造技术, 2019, 62(21): 52-58.

LIU Yuan, XUE Hongqian, JIN Hongrui, GAO Guoqiang. Numerical Simulation and Fatigue Experiment of 7075 Aluminum Alloy Joint Holes Processed by Compound Strengthening Technology. Aeronautical Manufacturing Technology, 2019, 62(21): 52-58.
刘渊，薛红前，靳泓睿，高国强. 7075铝合金连接孔复合强化数值模拟及疲劳试验研究[J]. 航空制造技术, 2019, 62(21): 52-58. DOI： 10.16080/j.issn1671–833x.2019.21.052.

LIU Yuan, XUE Hongqian, JIN Hongrui, GAO Guoqiang. Numerical Simulation and Fatigue Experiment of 7075 Aluminum Alloy Joint Holes Processed by Compound Strengthening Technology. Aeronautical Manufacturing Technology, 2019, 62(21): 52-58. DOI： 10.16080/j.issn1671–833x.2019.21.052.

摘要

以延长7075铝合金连接件疲劳寿命为目的，使用ABAQUS有限元软件模拟分析冷挤压孔强化对孔周应力分布的影响。结合超声喷丸弹丸动力学分析结果，建立超声喷丸有限元模型，数值模拟了冷挤压强化孔挤入端表面超声喷丸强化过程，分析了孔挤压强化与表面超声喷丸复合强化对7075铝合金连接孔周应力的影响，并通过超高周疲劳试验验证。结果表明：复合强化可以改善连接孔周的应力分布情况，抑制孔角裂纹的萌生和疲劳裂纹的扩展，因而能显著提高连接孔的疲劳寿命。

Abstract

In order to extend the fatigue life of 7075 aluminum alloy joints

the stress distribution around the hole processed by cold expansion was simulated by ABAQUS. The finite element model of ultrasonic peening was established according to the kinetics analysis of ultrasonic shot peening process. In order to get the stress distribution around hole processed by cold expansion combined with ultrasonic shot peening

the ultrasonic shot peening process around the entrance surface of cold expanded joint hole was numerically simulated. Finally

the very high cycle fatigue test was carried out to validate the numerical calculation. The results show that the compound strengthening process can improve the stress distribution of the joint

inhibit the crack initiation and propagation

so it can improve the fatigue strength of the joints significantly.

关键词

Keywords

references

Views

258

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Modulation of Pore Structure and Properties in Phenolic Aerogels by Cationic Polyelectrolytes

Assessment of Technological Advancement Based on Fuzzy Comprehensive Evaluation

Large-Distance Straight-Line Datum Construction Based on Laser Collimation

Electromechanical Behavior of Open-Hole Three-Dimensional Angle-Interlock Woven Carbon Fiber Reinforced Polymer Under Tensile Loading

Strength Design and Optimization of Aviation Filter Assembly Based on CF/PEEK Composite

Related Author

No data

Related Institution

No data

The platform construction and operation are provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19 京公网安备11010802024621
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.
Total Visits：34526 Visits Today：4

⁰