A non-linear energy model of fatigue damage accumulation and its verification for Al-2024 aluminum alloy

被引：47
作者：
Djebli, A. [1 ]
Aid, A. [1 ,3 ]
Bendouba, M. [1 ]
Amrouche, A. [4 ]
Benguediab, M. [2 ]
Benseddiq, N. [3 ]
机构：
[1] Univ Mascara, Lab LPQ3M, Mascara, Algeria
[2] Univ Djilali Liabes, Dept Genie Mecan, Sidi Bel Abess, Algeria
[3] Univ Lille 1, Lab Mecan Lille, F-59655 Villeneuve Dascq, France
[4] Univ Artois, Fac Sci Appl FSA Bethune, Lab Genie Civil & Geoenvironm LGCgE, EA 4515, Arras, France
来源：
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS | 2013年 / 51卷
关键词：
Fatigue damage accumulation; Damage model; Energy criterion; Programmed loading; Aluminum alloy; LIFE ESTIMATION; MULTIAXIAL FATIGUE; SPECTRAL METHODS; PREDICTION; RULE;
D O I：
10.1016/j.ijnonlinmec.2013.01.007
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A method of fatigue damage accumulation based upon application of energy parameters of the fatigue process is proposed in the paper. Using this model is simple, it has no parameter to be determined, it requires only the knowledge of the curve W-N (W: strain energy density N: number of cycles at failure) determined from the experimental Wohler curve. A computing Matlab-based algorithm of the fatigue life prediction methodology was developed. The proposed damage indicator is connected cycle by cycle to the Miller curve. Cycles were counted with the rain-flow algorithm, and damage was accumulated with this model and with the Palmgren-Miner rule. An experimental verification shows a satisfactory agreement between the fatigue life calculation results by the proposed model and test results. Estimated and experimental lives are found to exhibit good agreement. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：145 / 151
页数：7
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