Analysis of Biaxial Non-Proportional Low-Cycle Fatigue Crack Propagation Behavior of Hull Plate with an Inclined Crack Based on Accumulative Plasticity

Deng, Junlin; Tu, Wenling; Xiong, Kang; Pan, Yang; Dong, Qi

doi:10.1007/s11668-021-01179-7

Cited by 4 publications

(1 citation statement)

References 26 publications

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“…The values of G th / G c and G pl / G C are the default values set in Abaqus, and the values of C and m can be obtained by consulting the literature. 18 According to the literature review 19,20 and simulation calculation, the initial setting values of parameters C 1 , C 2 , G 1c , G 2c , and G 3c are obtained, respectively, used as prior parameter values. C 3 and C 4 need to be converted by the parameters C and m of the Paris Law.…”

Section: The Dynamic Bayesian Network For Crack Propagationmentioning

confidence: 99%

Prediction of fatigue crack propagation based on dynamic Bayesian network

Wang

Yang

et al. 2022

Advances in Mechanical Engineering

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To address the problem of low prediction accuracy in the current research on fatigue crack propagation prediction, a prediction method of fatigue crack propagation based on a dynamic Bayesian network is proposed in this paper. The Paris Law of crack propagation and the extended finite element method (XFEM) are combined to establish the state equation of crack propagation. The uncertain factors of crack propagation are analyzed, and the prediction model of fatigue crack propagation based on the dynamic Bayesian network is constructed. A Bayesian inference algorithm based on the combination of Gaussian particle filter and firefly algorithm is proposed. The fatigue experiment of the specimen with the pre-cracks is carried out to test the correlation between the fatigue load cycles and the crack propagation depth. The experimental results show that the crack propagation prediction method proposed in this paper can effectively improve the prediction accuracy of crack propagation depth.

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Section: The Dynamic Bayesian Network For Crack Propagationmentioning

confidence: 99%

Prediction of fatigue crack propagation based on dynamic Bayesian network

Wang

Yang

et al. 2022

Advances in Mechanical Engineering

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Analysis of biaxial proportional low-cycle fatigue crack propagation for hull inclined-crack plate based on accumulative plasticity

Deng

Dong

et al. 2022

SN Appl. Sci.

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Fracture failures of ship plates subjected to in-plane biaxial low-cycle fatigue loading are generally the coupling result of accumulative plasticity and biaxial low-cycle fatigue damage. A biaxial low-cycle fatigue crack growth analysis of hull structure that accounts for the accumulative plasticity effect can be more suitable for the actual evaluation of the overall fracture performance of the hull structure in severe sea conditions. An analytical model of biaxial low-cycle fatigue crack propagation with a control parameter for ∆CTOD is presented for hull inclined-crack plate. A test was conducted for cruciform specimens made of Q235 steel with an inclined crack to validate the presented analysis. The biaxial accumulative plasticity behavior and the effects of biaxiality and stress ratios were investigated. The results of this study reveal a strong dependence of biaxial low-cycle fatigue crack propagation on biaxial accumulated plasticity.

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Analysis of biaxial proportional low-cycle fatigue and biaxial accumulative plasticity of hull inclined-crack plate

Deng

Xiong

et al. 2022

International Journal of Naval Architecture and Ocean Engineeri

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Analysis of Biaxial Non-Proportional Low-Cycle Fatigue Crack Propagation Behavior of Hull Plate with an Inclined Crack Based on Accumulative Plasticity

Cited by 4 publications

References 26 publications

Prediction of fatigue crack propagation based on dynamic Bayesian network

Prediction of fatigue crack propagation based on dynamic Bayesian network

Analysis of biaxial proportional low-cycle fatigue crack propagation for hull inclined-crack plate based on accumulative plasticity

Analysis of biaxial proportional low-cycle fatigue and biaxial accumulative plasticity of hull inclined-crack plate

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