Effect of material uncertainties on fatigue life calculations of aircraft fuselages:: A cohesive element model

被引：20

作者：

Koutsourelakis, PS

Kuntiyawichai, K

Schuëller, GI

机构：

[1] Lawrence Livermore Natl Lab, Elect Engn Technol Div, Livermore, CA 94551 USA

[2] Univ Innsbruck, Inst Engn Mech, A-6020 Innsbruck, Austria

来源：

ENGINEERING FRACTURE MECHANICS | 2006年 / 73卷 / 09期

基金：

奥地利科学基金会;

关键词：

fatigue; cohesive elements; uncertainties; reliability;

D O I：

10.1016/j.engfracmech.2006.01.003

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The present paper deals with the effect of uncertainties on the prediction of fatigue failure of aerospace and mechanical components. Typically the design of such structures has been based on costly experiments or modified versions of Paris' law which are applicable to very restricted range of conditions. The present formulation employs cohesive zone elements in order to resolve the fractured zone in combination with an extrapolation scheme that makes the analysis over hundred of thousands of cycles computationally efficient. The effect of randomness in the cohesive strength is examined with respect to the total lifetime of the specimen. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1202 / 1219

页数：18

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