Fretting life of the A17050-T7451 under out-of-phase loads: Numerical and experimental analysis

被引：12

作者：

Gailliegue, T. ^{[1
]}

Doca, T. ^{[1
]}

Araujo, J. A. ^{[1
]}

Ferreira, J. L. A. ^{[1
]}

机构：

[1] Univ Brasilia UnB, Dept Mech Engn, Campus Darcy Ribeiro, BR-70900100 Brasilia, DF, Brazil

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2020年 / 106卷

关键词：

Fretting fatigue; Out-of-phase loading; Life estimation; HIGH-CYCLE FATIGUE; CRITICAL DISTANCES; CRITICAL PLANE; SLIP; STRENGTH; DAMAGE; PREDICTION;

D O I：

10.1016/j.tafmec.2020.102492

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study investigates the effect of the phase angle between fretting and fatigue loads on the life of Al7050-T7451 aluminum alloy specimens. Tests with phase angles of 0 degrees, 45 degrees, 90 degrees and 135 degrees are carried out using a bi-actuator system which permits the distinct control of fretting and fatigue loads. A numerical stress analysis for the in phase condition is developed and compared with the closed form solution to provide a benchmark for the study. Life is estimated using three different critical plane criteria coupled with extended versions of the Theory of Critical Distances. Results show that the introduction of a phase angle between loads plays a significant role on the fatigue life of this alloy.

引用

页数：10

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