EQUIVALENT LOAD METHOD FOR FATIGUE LIFE ANALYSIS OF LUGS UNDER OBLIQUE LOADING

LI YanBin; DONG DengKe; GONG YunZhao

doi:10.16579/j.issn.1001.9669.2017.03.038

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EQUIVALENT LOAD METHOD FOR FATIGUE LIFE ANALYSIS OF LUGS UNDER OBLIQUE LOADING

更新时间：2022-09-22

- EQUIVALENT LOAD METHOD FOR FATIGUE LIFE ANALYSIS OF LUGS UNDER OBLIQUE LOADING
- Journal of Mechanical Strength Vol. 39, Issue 3, Pages: 719-722(2017)
- 作者机构：
  
  1. 中国飞机强度研究所
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2017.03.038
  CLC：
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LI YanBin, DONG DengKe, GONG YunZhao. EQUIVALENT LOAD METHOD FOR FATIGUE LIFE ANALYSIS OF LUGS UNDER OBLIQUE LOADING. [J]. 39(3):719-722(2017)
DOI：

LI YanBin, DONG DengKe, GONG YunZhao. EQUIVALENT LOAD METHOD FOR FATIGUE LIFE ANALYSIS OF LUGS UNDER OBLIQUE LOADING. [J]. 39(3):719-722(2017) DOI： 10.16579/j.issn.1001.9669.2017.03.038.

摘要

通过对耳片在不同加载角度下进行受力分析,针对耳片受斜向拉-压疲劳载荷的寿命分析问题,对压缩载荷进行等效处理,得到有效载荷系数λ,将疲劳载荷谱等效为P,max,~λP,min,然后通过细节疲劳额定值(DFR)方法得到耳片结构的疲劳寿命,最后通过加载角为45°的耳片疲劳试验对该方法进行了验证,证明该方法具有工程实用性。

Abstract

First of all,stress analysis of lug under different loading angles was carried out. For the fatigue life analysis of lug under tension-compression loads,the compression load was treated equivalently,and the effective equivalent load factor λ was obtained. The fatigue load spectrum was equivalent to P,max,λP,min,and then the fatigue life of lug structure was obtained by the Detail Fatigue Rating（ DFR） method. Finally,the method was proved by the fatigue test of lug in 45° angles load,which proves that the method is practical in engineering.

关键词

耳片拉-压载荷细节疲劳额定值有效当量载荷系数

Keywords

LugTension-compression loadDetail Fatigue Rating（DFR）Effective equivalent load factor

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College of Mechanical and Electrical Engineering,Shenyang Aerospace University

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