最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
鋁鋰合金壓鉚壁板殘余應(yīng)力與疲勞性能分析
作者:
作者單位:

天津市民用航空器適航與維修重點實驗室

作者簡介:

通訊作者:

中圖分類號:

TG95

基金項目:

中央高?;緲I(yè)務(wù)經(jīng)費重點項目(項目號3122019189)


Analysis of Residual Stress and Fatigue Performance of Al-Li Alloy Riveted Panel
Author:
Affiliation:

Tianjin Key Laboratory for Civil Aircraft Airworthiness and Maintenance,Civil Aviation University of China

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問統(tǒng)計
  • |
  • 參考文獻
  • |
  • 相似文獻
  • |
  • 引證文獻
  • |
  • 資源附件
  • |
  • 文章評論
    摘要:

    自動壓鉚是航空制造工業(yè)中的重要裝配技術(shù),壓鉚過程結(jié)束后鉚孔周圍產(chǎn)生的殘余應(yīng)力的分布形式與壓鉚結(jié)構(gòu)的疲勞性能息息相關(guān)。本文使用ABAQUS軟件建立了2060-T8鋁鋰合金壁板壓鉚過程的有限元模型,通過有限元分析發(fā)現(xiàn)了壓鉚后鉚孔壁面上的殘余應(yīng)力由靠近鐓頭處到靠近釘頭處逐漸降低的分布規(guī)律。隨著壓鉚力由28.5kN增大至46kN,鉚釘材料為2117-T4的壓鉚壁板孔壁平均殘余應(yīng)力提高33%,殘余應(yīng)力沿壁板厚度上分布的均勻度提升180%;鉚釘材料為7050-T73的壓鉚壁板孔壁平均殘余應(yīng)力提高58%,殘余應(yīng)力沿壁板厚度上分布的均勻度提升184%。疲勞裂紋萌生于鉚接下板孔壁附近,隨著壓鉚力由32.5kN增大至42kN,鉚釘材料為2117-T4的壓鉚壁板疲勞壽命提升了31%~80%,鉚釘材料為7050-T73的壓鉚壁板疲勞壽命提升6%~161%。相比于鉚釘材料為7050-T73的壓鉚壁板,相同工藝條件下鉚釘材料為2117-T4的壓鉚壁板疲勞壽命提升12%~44%。

    Abstract:

    Automatic riveting is an important assembly technology in the aviation manufacturing industry. The distribution of residual stress around the rivet hole after the riveting process is closely related to the fatigue performance of the riveting structure. In this paper, ABAQUS software was used to establish the finite element model of the press riveting process of the 2060-T8 Al-Li alloy plate. It was found that the residual stress on the wall of the rivet hole after the riveting process gradually decreased from the place close to the rivet head to the place close to the rivet head. With the pressure riveting force increasing from 28.5kN to 46kN, the average residual stress of the hole wall of the riveted plate with the rivet material of 2117-T4 increases by 33%, and the uniformity of the residual stress distribution along the thickness of the wall plate increases by 180%. The average residual stress of the hole wall of the riveted plate with 7050-T73 rivet material is increased by 58%, and the uniformity of the residual stress distribution along the thickness of the wall plate is increased by 184%. The fatigue crack originated near the hole wall of the riveted lower plate. With the increase of the riveting force from 32.5kN to 42kN, the fatigue life of the riveted plate with the rivet material of 2117-T4 increased by 31%~80%, and the fatigue life of the riveted plate with the rivet material of 7050-T73 increased by 6%~161%. Compared with the riveted plate with rivet material of 7050-T73, the fatigue life of the riveted plate with rivet material of 2117-T4 under the same process conditions is increased by 12%~44%.

    參考文獻
    相似文獻
    引證文獻
引用本文

丁坤英,楊翼飛,張濤,郭萬森.鋁鋰合金壓鉚壁板殘余應(yīng)力與疲勞性能分析[J].稀有金屬材料與工程,2024,53(2):474~482.[DING Kun-ying, YANG Yi-fei, ZHANG Tao, GUO Wan-sen. Analysis of Residual Stress and Fatigue Performance of Al-Li Alloy Riveted Panel[J]. Rare Metal Materials and Engineering,2024,53(2):474~482.]
DOI:10.12442/j. issn.1002-185X.20230034

復(fù)制
文章指標
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2023-01-19
  • 最后修改日期:2023-02-22
  • 錄用日期:2023-03-14
  • 在線發(fā)布日期: 2024-02-28
  • 出版日期: 2024-02-23