A fatigue stress-life damage accumulation model for variable amplitude fatigue loading based on virtual target life

Aghoury, Ihab M. El

doi:10.1016/j.engstruct.2013.03.001

Cited by 28 publications

(15 citation statements)

References 10 publications

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“…Over the years, efforts have been made to formulate this rule involving more factors such as fatigue loading history [ 28 ], stress ratio [ 29 ], thermodynamics potential [ 30 ], and fatigue inelastic parameters [ 20 ]. The modified Palmgren-Miner’s rules have improved accuracy in predicting fatigue life, but face challenges in being widely used in current building codes due to their complex forms [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Performance of Repaired Concrete under Cyclic Flexural Loading

Wang

Gupta

2021

Materials

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There is limited research reported on the effect of cyclic loading on cement-based repair materials as conducting such tests is time consuming. To overcome this issue, this study utilized a novel loading regime consisting of cycle groups with increasing stress amplitude to accelerate the test process. The Palmgren-Minder rule was used to estimate the fatigue life of repaired specimens. Specimens repaired with Mix M (cementitious repair mortar), which was estimated to have the highest 2-million-cycle fatigue endurance limit (77.4%), showed the longest fatigue life (95,991 cycles) during the cyclic loading test, the highest slant, and splitting bond strength among all repair mixes. The estimated two-million cycle fatigue endurance limit of Mix S (70.8%) was very similar to that was reported in literature (71%) using the traditional loading method. This study confirms the usefulness of Palmgren-Minder rule on estimating the fatigue life of repaired specimens. Additionally, the use of the novel loading regime showed the benefit of shortening the test process while producing results similar to those from using traditional loading methods. To improve the prediction accuracy, future research is required to modify the failure criteria to accommodate specimens that may not fail even when the average flexural strength is met.

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Section: Introductionmentioning

confidence: 99%

Performance of Repaired Concrete under Cyclic Flexural Loading

Wang

Gupta

2021

Materials

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“…However, the model does not take into account loading histories (such as load sequences and load interactions). The function formulating the CAL fatigue damage with respect to n / N f is independent of applied loads, while it has been verified that fatigue failure for many metallic materials commonly exhibits highly non‐linear damage behaviours with load dependency . Therefore, the predictions using Miner rule do not strongly correlate with the experimental results.…”

Section: Discussionmentioning

confidence: 99%

A fatigue driving energy approach to high‐cycle fatigue life estimation under variable amplitude loading

Peng

Huang

Zhu

et al. 2015

Fatigue Fract Eng Mat Struct

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In this paper, a concept of fatigue driving energy is formulated to describe the process of fatigue failure. The parameter is taken as a combination of the fatigue driving stress and strain energy density. By assessing the change of this parameter, a new non‐linear damage model is proposed for residual life estimation within high‐cycle fatigue regime under variable amplitude loading. In order to consider the effects of loading histories on damage accumulation under such condition, the load interaction effects are incorporated into the new model, and a modified version is thus developed. Life predictions by these two models and Miner rule are compared using experimental data from literature. The results show that the proposed model gives lower deviations than the Miner rule, while the modified model shows better prediction performances than the others. Moreover, the proposed model and its modifications are ease of implementation with the use of S–N curve.

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“…Recently, Aid et al presented a fatigue cumulative damage model to connect the damage evolution at different load levels. Aghoury et al proposed a stress‐life damage accumulation model by introducing a time dimension to the S‐N curve. Particularly, it has shown the advantage of simulating the influence of non‐uniform fatigue loads.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear fatigue damage accumulation and life prediction of metals: A comparative study

Zhu

Hao

Correia

et al. 2018

Fatigue Fract Eng Mat Struct

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Fatigue damage modelling and life prediction of engineering components under variable amplitude loadings are critical for ensuring their operational reliability and structural integrity. In this paper, five typical nonlinear fatigue damage accumulation models are evaluated and compared by considering the influence of load sequence and interaction on fatigue life of P355NL1 steels. Moreover, a new nonlinear fatigue damage accumulation model is proposed to account for these two effects. Experimental datasets of pressure vessel steel P355NL1 and four other materials under two‐block loadings are used for model comparative study. Results indicate that the proposed model yields more accurate fatigue life predictions for the five materials than the other models.

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A fatigue stress-life damage accumulation model for variable amplitude fatigue loading based on virtual target life

Cited by 28 publications

References 10 publications

Performance of Repaired Concrete under Cyclic Flexural Loading

Performance of Repaired Concrete under Cyclic Flexural Loading

A fatigue driving energy approach to high‐cycle fatigue life estimation under variable amplitude loading

Nonlinear fatigue damage accumulation and life prediction of metals: A comparative study

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