A novel model for low-cycle multiaxial fatigue life prediction based on the critical plane-damage parameter

Liu, Jianhui; Lv, Xin; Wei, Yun; Pan, Xuemei; Jin, Y.; Wang, Youliang

doi:10.1177/0036850420936220

Cited by 11 publications

(7 citation statements)

References 26 publications

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“…Fatigue life prediction has an important impact on the design, use and maintenance of parts. [41][42][43][44] It is the key to ensuring safety. Before the life estimation of the lower arm, the fatigue life corresponding to the onedimensional load spectrum needs to be found first.…”

Section: Fatigue Life Prediction Of Lower Armmentioning

confidence: 99%

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Random fatigue life prediction of automobile lower arm via modified Corten–Dolan model

Yang

Liu

Wang

2022

Fatigue Fract Eng Mat Struct

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The fatigue life for the rear suspension lower arm of the passenger car is investigated. The road load signals collected by the sextant force measuring instrument are processed. And the frequency histogram of it is plotted and its distribution characteristics are analyzed. The load signal is extrapolated to a cumulative frequency of 10 6 using the parametric method, and the onedimensional load spectrum of the lower arm is compiled. Based on the nonlinear fatigue cumulative damage theory, Corten-Dolan model is modified by introducing the kth power of the stress ratio between two adjacent levels. The improved fatigue life prediction model is established and the validity of the model was determined by experimental data. And the improved Corten-Dolan and the linear cumulative damage model are used to predict the life of the lower arm under one-dimensional load spectrum respectively.

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Section: Fatigue Life Prediction Of Lower Armmentioning

confidence: 99%

“…Fatigue life prediction has an important impact on the design, use and maintenance of parts 41–44 . It is the key to ensuring safety.…”

Section: Fatigue Life Prediction Of Lower Armmentioning

confidence: 99%

Random fatigue life prediction of automobile lower arm via modified Corten–Dolan model

Yang

Liu

Wang

2022

Fatigue Fract Eng Mat Struct

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“…Currently, most multiaxial fatigue life prediction models can accurately predict fatigue life under proportional loading (Brown and Miller, 1973;Sun et al, 2022;Branco et al, 2022;Nourian-Avval and Khonsari, 2021;Guechichi et al, 2011), while the prediction results for fatigue life under non-proportional loading conditions are often not accurate enough (Ma and Liu, 2022). This is due to the constant rotation of the principal strain axis under non-proportional loading conditions, and the material does not easily produce a stable dislocation structure internally, leading to non-proportional additional hardening phenomena (Liu et al, 2020). Liu et al (2022) found that the larger the phase difference, the more obvious the additional hardening effect, and the most serious additional hardening phenomenon was observed when the phase difference was 908.…”

Section: Introductionmentioning

confidence: 99%

“…, 2011), while the prediction results for fatigue life under non-proportional loading conditions are often not accurate enough (Ma and Liu, 2022). This is due to the constant rotation of the principal strain axis under non-proportional loading conditions, and the material does not easily produce a stable dislocation structure internally, leading to non-proportional additional hardening phenomena (Liu et al. , 2020).…”

Section: Introductionmentioning

confidence: 99%

Critical plane-based fatigue life model under multiaxial random loading

Wang

Liu

Hua

et al. 2022

IJSI

Self Cite

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PurposeEngineering components/structures are usually subjected to complex and variable loads, which result in random multiaxial stress/strain states. However, fatigue analysis methods under constant loads cannot be directly applied to fatigue life prediction analysis under random loads. Therefore, the purpose of this study is how to effectively evaluate fatigue life under multiaxial random loading.Design/methodology/approachFirst, the average phase difference is characterized as the ratio of the number of shear strain cycles to the number of normal strain cycles, and the new non-proportional additional hardening factor is proposed. Then, the determined random typical load spectrum is processed into a simple variable amplitude load spectrum, and the damage in each plane is calculated according to the multiaxial fatigue life prediction model and Miner theory. Meanwhile, the cumulative damage can be calculated separately by projection method. Finally, the maximum projected cumulative damage plane is defined as the critical plane of multiaxial random fatigue.FindingsThe fatigue life prediction capability of the method is verified based on test data of TC4 titanium alloy under random multiaxial loading. Most of the predicting results are within double scatter bands.Originality/valueThe objective of this study is to provide a reference for the determination of critical plane and non-proportional additional hardening factor under multiaxial random loading, and to promote the development of multiaxial fatigue from experimental studies to practical engineering applications.

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“…It is worth noticing that a fatigue criterion cannot accurately estimate fatigue life by only considering the stress/strain state inside a material in terms of the computation of a suitable damage parameter. Among the criteria available in the literature for such an evaluation, both strain-and energy-based criteria are widely used [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

A Novel Multiaxial Strain-Based Criterion Considering Additional Cyclic Hardening

Vantadori

2021

Materials

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The present paper is dedicated to the theoretical evaluation of a loading feature, that may have a significant influence on fatigue phenomenon: non-proportionality. As a matter of fact, considerable interactions between dislocations, leading to the formation of dislocation cells, cause additional cyclic hardening of material. Such a phenomenon is experimentally observed for materials sensitive to non-proportionality. In such a context, the present paper is aimed to propose a novel multiaxial strain-based criterion, the refined equivalent deformation (RED) criterion, which allows to take into account, in fatigue life estimation, both strain amplitude and additional cyclic hardening. The accuracy of the novel criterion is evaluated by considering experimental tests, performed on Ti-6Al-4V specimens, subjected to multiaxial LCF loading.

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A novel model for low-cycle multiaxial fatigue life prediction based on the critical plane-damage parameter

Cited by 11 publications

References 26 publications

Random fatigue life prediction of automobile lower arm via modified Corten–Dolan model

Random fatigue life prediction of automobile lower arm via modified Corten–Dolan model

Critical plane-based fatigue life model under multiaxial random loading

A Novel Multiaxial Strain-Based Criterion Considering Additional Cyclic Hardening

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