Service-life assessment of aircraft integral structures based on incremental fatigue damage modeling

被引：5

作者：

Lindstrom, Stefan B. ^{[1
]}

Moverare, Johan ^{[2
]}

Xu, Jinghao ^{[2
]}

Leidermark, Daniel ^{[3
]}

Eriksson, Robert ^{[3
]}

Ansell, Hans ^{[4
]}

Kapidzic, Zlatan ^{[3
,4
]}

机构：

[1] Mid Sweden Univ, FSCN Res Ctr, S-85170 Sundsvall, Sweden

[2] Linkoping Univ, Div Engn Mat, S-58183 Linkoping, Sweden

[3] Linkoping Univ, Div Solid Mech, S-58183 Linkoping, Sweden

[4] Saab AB, S-58188 Linkoping, Sweden

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 172卷

关键词：

Incremental fatigue damage; 7050-T7451 aluminum alloy; Variable amplitude load; Integral structures; Crack initiation; MULTIAXIAL FATIGUE; CRITERION;

D O I：

10.1016/j.ijfatigue.2023.107600

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The Ottosen-Stenstrom-Ristinmaa (OSR) incremental fatigue damage model is adapted for fatigue-life as-sessment of integral airframes milled from 7050-T7451 aluminum plates. For validation, variable-amplitude high-cycle fatigue experiments are conducted for circumferentially notched, axisymmetric specimens, and for a geometry similar to an aircraft fuselage frame, with flanges, stiffeners, and web panels. We also describe how the parameters of the OSR model can be modified to account for surface roughness, and for setting acceptable failure probability.

引用

页数：11

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