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

Djebli, Abdelkader; Aid, A.; Bendouba, M.; Amrouche, Abdelwaheb; Benguediab, M.; Benseddiq, Noureddine

doi:10.1016/j.ijnonlinmec.2013.01.007

Cited by 49 publications

(35 citation statements)

References 21 publications

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“…It only requires Wöhler's curve converted into energy versus number of cycles [35]. Thus, with the assumption that the material behaves elastically during cycling loading, the strain energy density is taken as a variable in the fatigue damage calculation, as shown by Equation (5): (5) where energy is calculated by the Equation (6): (6) The confrontation of the experimental results and prediction results of damage models (LM rule, DS model and DE model) is checked according to the relative error of prediction, denoted as REP.…”

Section: Damage Energy (De) Modelmentioning

confidence: 99%

PE-HD fatigue damage accumulation under variable loading based on various damage models

Bourchak¹,

Aid²

2017

Express Polym. Lett.

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Abstract. Despite numerous studies on fatigue of polymer materials under variable loading, there is little work on highdensity polyethylene (PE-HD). In this context, an experimental analysis for determining the fatigue strength of PE-100, under constant and variable amplitude loading is presented. Further, the cumulative fatigue damage behavior of PE-100 was experimentally investigated. First, the fatigue curve (S-N: stress vs. number of cycles) was obtained in order to establish the fatigue life of PE-100 subjected to constant stress amplitude. Secondly, Miner's fatigue rule as well as stress-based and energy-based fatigue damage models were used to estimate the cumulative variable amplitude fatigue damage. Comparison between predictions and experimental results showed different trends depending on the choice of prediction model used implying careful fatigue damage consideration when designing under variable amplitude loading.

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Section: Damage Energy (De) Modelmentioning

confidence: 99%

PE-HD fatigue damage accumulation under variable loading based on various damage models

Bourchak¹,

Aid²

2017

Express Polym. Lett.

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“…The approach is presented on the basis of the non-linear energy model [16]. The hypothesis employed in this approach is that when the physical state of damage is unchanged, then the fatigue life will depend only on loading conditions [14].…”

Section: Description Of New Approachmentioning

confidence: 99%

“…The hypothesis employed in this approach is that when the physical state of damage is unchanged, then the fatigue life will depend only on loading conditions [14]. Under high-cycle fatigue, the relationship between the energy and fatigue life can be written as follows [16]:…”

Section: Description Of New Approachmentioning

confidence: 99%

“…Therefore, many methods [3][4][5][6][7][8][9][10][11][12] has been conducted to predict fatigue life under variable loading condition based on nonlinear damage cumulative model. Especially, the literatures [13][14][15][16] explore methods to predict the fatigue life of aluminum alloy 2024-T42 subjected to variable amplitude loading. Pavlou DG [13]discuss a phenomenological approach to estimating the fatigue life of 2024-T42 aluminum alloy in view of hardness change.…”

Section: Introductionmentioning

confidence: 99%

“…Aid [14][15] propose a method to predict the fatigue life of 2024-T42 aluminum alloy based on Damage Stress Model. A. Djeblin [16] use a non-linear energy model to calculate the fatigue life of 2024-T42 aluminum alloy. The comparison between the predicted fatigue lives and the experimental results show that the proposed models present a good assessment of fatigue life for 2024-T42 aluminum alloy under variable amplitude loading condition.…”

Section: Introductionmentioning

confidence: 99%

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A New Approach to Prediction of Fatigue Life For 2024-T42 Aluminum Under Variable Amplitude Loading

Guo¹,

Ke-ge²,

Liu³

et al. 2017

Proceedings of the 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016)

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Abstract.A new approach is explored to predict the fatigue life of 2024-T42 aluminum subjected to variable amplitude loading. The predicted fatigue lives are compared with the experimental data and those predicted by Miner's rule, which show that the fatigue lives predicted by the proposed approach agree well with the experimental results and most of the errors are within a factor of 2. The proposed approach gives better prediction than the Miner's rule owing to the fact that it can take into account the loading history. Furthermore, the theoretical results tend to be non-conservative for the decreasing loading and the predicted results underestimate the experimental lives for the increasing loading.

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Interval dynamic reliability analysis of mechanical components under multistage load based on strength degradation

Jiang

Liu

Wang

et al. 2020

Quality & Reliability Eng

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To further study the law of strength degradation, the residual strength degradation model is established based on the definition of fatigue damage, considering the interaction of various uncertain factors and time factors in service environment. Combined with equivalent damage model, a nonlinear cumulative damage model is proposed, which takes the interaction among loading loads into account and improves the accuracy of calculation. Additionally, the equivalent transformation of multistage load is studied using interval theory. According to the interval dynamic nonprobability reliability prediction model, a dynamic reliability analysis of the interval model is carried out. Dynamic reliability of the component is analyzed under multistage load accumulation damage to verify the effectiveness of the method.

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

Cited by 49 publications

References 21 publications

PE-HD fatigue damage accumulation under variable loading based on various damage models

PE-HD fatigue damage accumulation under variable loading based on various damage models

A New Approach to Prediction of Fatigue Life For 2024-T42 Aluminum Under Variable Amplitude Loading

Interval dynamic reliability analysis of mechanical components under multistage load based on strength degradation

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