2023
DOI: 10.22541/au.167826709.92307535/v1
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Fatigue reliability analysis of composite material considering the growth of effective stress and critical stiffness

Abstract: Fatigue damage accumulation will not only cause the degradation of material performance, but also lead to the growth of effective stress and critical stiffness. However, the existing fatigue reliability models usually ignore the effective stress growth and its influence on critical stiffness of composite material. This study considers the combined effects of performance degradation and effective stress growth, and a pair of fatigue reliability models for composite material is presented. Firstly, the fatigue da… Show more

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Cited by 11 publications
(10 citation statements)
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“…For notched components under complex loading, the fatigue life changes due to the multiaxial stress-strain state, and therefore, fatigue failure analysis is particularly important to the reliability of the structure. [1][2][3] At present, an increasing number of researchers focus on developing various effective methods to conduct fatigue failure analysis. In particular, it is a major research trend to determine a feasible damage parameter.…”
Section: Introductionmentioning
confidence: 99%
“…For notched components under complex loading, the fatigue life changes due to the multiaxial stress-strain state, and therefore, fatigue failure analysis is particularly important to the reliability of the structure. [1][2][3] At present, an increasing number of researchers focus on developing various effective methods to conduct fatigue failure analysis. In particular, it is a major research trend to determine a feasible damage parameter.…”
Section: Introductionmentioning
confidence: 99%
“…Carbon fiber reinforced polymers (CFRPs) are widely used in large structures such as aircraft due to their excellent material performance 1,2 . These large mechanical structures are often composed of numerous small parts that are held together in mechanical connections to form the final assembly.…”
Section: Introductionmentioning
confidence: 99%
“…8 Gao et al presented a composite material fatigue reliability model considering the performance, which considers the comprehensive effects of performance degradation and effective stress growth, which can realize the fatigue reliability analysis of composites based on strength and stiffness. 9 Liu et al proposed a fatigue reliability assessment approach for wind turbine blades that combines finite element analysis to identify critical regions and quantify uncertainties with a continuous time Bayesian network model to analyze failure probabilities and relationships between blade components. 10 When estimating the structural reliability of fatigue crack growth in aero-disks, the probabilistic model of the aero-disk is typically integrated with reliability analysis methods, such as First Second Moment Method (FORM), Monte Carlo Simulation (MCS) and Kriging Surrogate Model and others.…”
Section: Introductionmentioning
confidence: 99%
“…Gao et al. presented a composite material fatigue reliability model considering the performance, which considers the comprehensive effects of performance degradation and effective stress growth, which can realize the fatigue reliability analysis of composites based on strength and stiffness 9 . Liu et al.…”
Section: Introductionmentioning
confidence: 99%