PROCESS RESEARCH OF EDGE DISTANCE ON AN INTERFERENCE-FIT STRENGTHENING TECHNIQUE OF TITANIUM ALLOY SHEET

ZHANG Fan; CAO ZengQiang; YANG XiaoNa; CHEN Chang; QIAO TingTing; QIU JiWei

doi:10.16579/j.issn.1001.9669.2017.06.029

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PROCESS RESEARCH OF EDGE DISTANCE ON AN INTERFERENCE-FIT STRENGTHENING TECHNIQUE OF TITANIUM ALLOY SHEET

更新时间：2022-09-22

- PROCESS RESEARCH OF EDGE DISTANCE ON AN INTERFERENCE-FIT STRENGTHENING TECHNIQUE OF TITANIUM ALLOY SHEET
- Journal of Mechanical Strength Vol. 39, Issue 6, Pages: 1432-1437(2017)
- 作者机构：
  
  1. 西北工业大学机电学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2017.06.029
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ZHANG Fan, CAO ZengQiang, YANG XiaoNa, et al. PROCESS RESEARCH OF EDGE DISTANCE ON AN INTERFERENCE-FIT STRENGTHENING TECHNIQUE OF TITANIUM ALLOY SHEET. [J]. 39(6):1432-1437(2017)
DOI：

ZHANG Fan, CAO ZengQiang, YANG XiaoNa, et al. PROCESS RESEARCH OF EDGE DISTANCE ON AN INTERFERENCE-FIT STRENGTHENING TECHNIQUE OF TITANIUM ALLOY SHEET. [J]. 39(6):1432-1437(2017) DOI： 10.16579/j.issn.1001.9669.2017.06.029.

摘要

针对某型机关键部位研制过程中钛合金薄壁板干涉强化的孔边距工艺问题,在有限元软件Abaqus平台上建立了3D有限元模型,分析了在循环载荷作用下,材料为TC4钛合金带孔薄壁板件的孔边距对干涉强化试件应力分布影响以及疲劳寿命预测分析。研究表明:随着边距比减小,疲劳寿命呈现明显降低趋势,疲劳破坏位置逐渐向远离孔方向移动,当边距比小于2时,疲劳破坏在薄壁板边缘处发生。

Abstract

To solve the optimization problem of edge distance in titanium alloy sheet during a new aircraft development stage,a three dimensional FE model was built on ABAQUS platfom. The effect of edge distance on residual stress distribution was analysised with TC4 titanium alloy by interference-fit strengthening technique under cylic loading. The study indicates that a considerble reduction of fatigue life is found with a lower egde distance ratio（ L/D）,also,the location of fatigue damage is moving against the hole. Fatigue damage happens in the margin part with edge distance ratio（ L/D） less than 2.

关键词

钛合金干涉强化孔边距有限元法疲劳寿命

Keywords

TitaniumInterference-fit strengtheningEdge distanceFinite element methodFatigue life

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