An improved fatigue accumulation damage model based on load interaction and strength degradation

Zhao, Gongwei; Liu, Yating; Ye, Nanhai

doi:10.1016/j.ijfatigue.2021.106636

Cited by 23 publications

(10 citation statements)

References 16 publications

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“…Based on M-H mathematical model, 43 under the stress level σ 1 , the damage amount caused to the part after n 1 cycles is H A . During the second loading, the damage H A caused by the first loading is equivalent to the damage H B caused to the part after n ′ 2 cycles under the second loading stress σ 2 in the Figure 2.…”

Section: Contact Fatigue Initiation Life Predictionmentioning

confidence: 99%

A rolling contact fatigue health prediction model based on load interaction and damage energy accumulation

Hao

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Rolling contact is one of the main contact modes of all kinds of mechanical equipment at present. This investigation studied the rolling contact fatigue behaviors under various slip ratios and surface roughness with the consideration of loading history, loading sequence, and mutual influence between different load levels. In this paper, a fatigue crack initiation life prediction model based on strain energy accumulation caused by slip dislocations is proposed. The effect of increasing slip dislocation density and friction resistance on strain energy accumulation under alternating load is studied. The experimental results show that compared with the existing models, the proposed model can effectively improve the prediction accuracy of contact fatigue life under variable stress loading.

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Section: Contact Fatigue Initiation Life Predictionmentioning

confidence: 99%

A rolling contact fatigue health prediction model based on load interaction and damage energy accumulation

Hao

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…4 The fatigue strength is constantly reduced with the accumulated fatigue damage, and the damage increases with the applied number of loading cycles. 4 Therefore, fatigue damage accumulation and life prediction are crucial design parameters. The Miner's rule is classical and has been widely applied in practice.…”

Section: Introductionmentioning

confidence: 99%

“…Fatigue failure is the primary cause of degradation in the properties of most mechanical components and structures 4 . The fatigue strength is constantly reduced with the accumulated fatigue damage, and the damage increases with the applied number of loading cycles 4 . Therefore, fatigue damage accumulation and life prediction are crucial design parameters.…”

Section: Introductionmentioning

confidence: 99%

A Miner's rule based fatigue life prediction model for combined high and low cycle fatigue considering loading interaction effect

Wang,

Hou,

Guo

et al. 2023

Fatigue Fract Eng Mat Struct

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The key components in service, such as aero‐engine turbine blades, are generally bearing complex interactions of high and low cycle fatigue loading. It is essential to make accurate fatigue life predictions for these components. In this paper, based on experimental analysis and the Miner's rule, a combined cycle fatigue life prediction model is proposed. The effect of the loading interaction of the high and low cycle fatigue is considered through the coupled damage, which is proposed based on the investigation of the fatigue test results and does not require additional material constants except for the S‐N curve parameters. The applicability of the proposed model is validated by the experimental data of three materials and the turbine blade. Compared with the T‐K model and Miner's rule, the results demonstrate that the proposed model provides high precision accuracy.

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“…Manson and Halford refined the damage curve by linearization and proposed a double linear damage rule (DLDR) [8], according to which two damage lines were utilized to describe the crack initiation and propagation stages, respectively. To some extent, the DLDR or improved DLDR maintains both the simplicity of Miner's rule and some physical basis, greatly improving the accuracy of life prediction [9][10][11]. Moreover, Miller and Zachariah developed the double exponential law based on the idea of the DLDR [12].…”

Section: Introductionmentioning

confidence: 99%

Damage Distribution Map Based Damage Accumulation Calculation Approach for Welded Joints

Duan

Dang

Wei

2023

Metals

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Fatigue damage accumulation under variable amplitude loadings is vital for the life prediction of welded structures. An approach based on damage distribution mapping is presented. S-N curves of welded joints are utilized to construct fatigue damage zones, and a corresponding polynomial fitting function is derived from the heat transfer FEA solution. Experimental results for cruciform and T joints under tensile and three-point bending are employed for validation. Compared with four existing damage models, the proposed approach shows greater accuracy and provides a better description for the early stage of fatigue.

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An improved fatigue accumulation damage model based on load interaction and strength degradation

Cited by 23 publications

References 16 publications

A rolling contact fatigue health prediction model based on load interaction and damage energy accumulation

A rolling contact fatigue health prediction model based on load interaction and damage energy accumulation

A Miner's rule based fatigue life prediction model for combined high and low cycle fatigue considering loading interaction effect

Damage Distribution Map Based Damage Accumulation Calculation Approach for Welded Joints

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