Energy-based method of fatigue damage cumulation

Mroziński, Stanisław

doi:10.1016/j.ijfatigue.2018.12.008

Cited by 45 publications

(21 citation statements)

References 15 publications

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“…There are many energy-based models of fatigue, in which, apart from the plastic strain energy, other energies (total energy, elastic strain energy) are taken into account (see [ 15 ]). In the following work, attention is focused on the description of low-cycle fatigue, in which only the plastic strain energy is taken into account.…”

Section: Methodsmentioning

confidence: 99%

Energy Dissipated in Fatigue and Creep Conditions

2021

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The paper presents the results of tests performed on samples made of P91 steel under combined variable and constant load conditions, at temperature T = 600 °C. The analysis of the test results was carried out with the use of the energetic description of the fatigue process. It was shown that the order of occurrence of the fatigue load and creep in the load program influences the fatigue life and the value of the energy cumulated in the sample until fracture.

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Section: Methodsmentioning

confidence: 99%

Energy Dissipated in Fatigue and Creep Conditions

2021

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“…This parameter can be successfully used when summing fatigue damage in terms of energy. The above issue is discussed in more detail in the paper [9] .…”

Section: Experimental Testingmentioning

confidence: 99%

Experimental and numerical modeling approach for thermomechanical low cycle fatigue analysis of cyclically non-stabilized steels

et al. 2021

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The widely used fatigue life prediction models, such as the Coffin–Manson model or S–N curve related models are based on the assumption that the response of a material experiencing low cycle fatigue loading is stabilized during some period. However, for many materials such a stabilized state is hardly observed, and the activated mechanisms for cyclic hardening or softening depend on test conditions. In general, the selected test conditions (stress or strain control) should depend on the intended use of the obtained material data. If testing conditions do not correspond to the operation mode of the considered mechanical facilities, the above mentioned life prediction models will produce inaccurate results. Hence, selecting and identifying proper fatigue parameters, which would represent the state of a material during the whole fatigue life, is extremely important in reliability evaluation of structures. In the case of non-stabilizing steels, the common challenges are: Selecting and performing a suitable set of experimental tests to recognize various aspects of the material behavior under low-cycle thermomechanical fatigue; Adjusting a proper constitutive modelling, reflecting the real physical phenomena taking place in the material microstructure; Effective numerical implementation and optimal parameter identification.

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“…In order to make up for the deficiencies of Miner's rule, much effort has been made to simulate the nonlinear fatigue damage process, including energy‐based methods, 13,14 damage curve approaches, 15–17 continuum damage mechanics–based approaches, 18–23 fatigue driving stress approach, 24 static toughness exhaustion models, 25–27 and S‐N curve‐based models 28,29 . Especially, Rege and Pavlou 30 proposed a cumulative fatigue damage model based on the concept of isodamage curves, which is described using one parameter and S‐N curve of the material.…”

Section: Introductionmentioning

confidence: 99%

A modified nonlinear fatigue damage accumulation model for life prediction of rolling bearing under variable loading conditions

Huang

et al. 2022

Fatigue Fract Eng Mat Struct

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During the use of rolling bearings in wind turbines, aero engines, and other equipment, they often operate under variable operating and loading conditions. The practice has shown that the sequence of these loads and their interaction has a significant impact on the fatigue life of rolling bearings. In order to better understand this issue, a modified nonlinear fatigue damage accumulation model, which considers the influences of both load sequence and load interaction, is proposed in this paper and verified using the fatigue testing data for six materials. Then, the verified model was applied to evaluate the fatigue damage accumulation and fatigue life of a rolling bearing. The results have shown that, compared with the existing models, the proposed model can more accurately predict the damage accumulation and fatigue life of the rolling bearing under variable loading conditions.

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Energy-based method of fatigue damage cumulation

Cited by 45 publications

References 15 publications

Energy Dissipated in Fatigue and Creep Conditions

Energy Dissipated in Fatigue and Creep Conditions

Experimental and numerical modeling approach for thermomechanical low cycle fatigue analysis of cyclically non-stabilized steels

A modified nonlinear fatigue damage accumulation model for life prediction of rolling bearing under variable loading conditions

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