Nonlocal fretting fatigue assessment for dovetail joints

被引：0

作者：

Guo, Kaiwen ^{[1
]}

Yuan, Huang ^{[1
,2
]}

机构：

[1] Tsinghua Univ, Sch Aerosp Engn, Beijing, Peoples R China

[2] Tsinghua Univ, Inst Aero Engines, Beijing, Peoples R China

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2024年 / 185卷

基金：

中国国家自然科学基金;

关键词：

Fretting fatigue; Dovetail joint; Nonlocal treatment; Multiaxial fatigue; Friction; CRITICAL DISTANCES; DAMAGE; COMPONENTS; BEHAVIOR;

D O I：

10.1016/j.ijfatigue.2024.108337

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In fretting fatigue, the local stress concept leads to a significant underestimation of fatigue life. Conventional fatigue models lack conservatism in dovetail structures due to mesh dependency and cumulative plastic deformations. The present study aims to develop a nonlocal life model for fretting fatigue of dovetail joints based on extensive experimental and computational analyses. Frictional work was analytically derived and utilized to describe fretting damage, combined with a multiaxial fatigue model. The developed model aligns well with experimental results under various loading conditions, with deviations falling within a double-error band.

引用

页数：13

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