An improved nonproportional cyclic plasticity model for multiaxial low-cycle fatigue and ratcheting responses of 304 stainless steel

Khutia, Niloy; Dey, Partha Pratim; Hassan, Tasnim

doi:10.1016/j.mechmat.2015.05.011

Cited by 55 publications

(18 citation statements)

References 69 publications

(80 reference statements)

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“…Microstructure observations reveal a close relationship between the change of dislocation pattern and ratcheting evolution . Accurate constitutive modeling of ratcheting is necessary in design and life assessment of components subjected to asymmetric cyclic stressing; therefore, efforts have been devoted in developing constitutive models and improving their prediction capability, such as works performed by several research groups, Chaboche, Ohno and Wang, McDowell, Hassan, Chen, Kang, and Varvani‐Farahani, who took different considerations in kinetic hardening rule and yield surface shape change. Progresses in phenomenon observation, constitutive modeling, and application regarding ratcheting have been reviewed by Ohno and Kang …”

Section: Introductionmentioning

confidence: 99%

Ratcheting‐fatigue behaviour of bainite 2.25Cr1MoV steel with tensile and compressed hold loading at 455°C

Zhao

Chen

et al. 2019

Fatigue Fract Eng Mat Struct

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The ratcheting behaviour of a bainite 2.25Cr1MoV steel was studied with various hold periods at 455°C. Particular attention was paid to the effect of stress hold on whole‐life ratcheting deformation, fatigue life, and failure mechanism. Results indicate that longer peak hold periods stimulate a faster accumulation of ratcheting strain by contribution of creep strain, while double hold at peak and valley stress has an even stronger influence. Creep strains produced in peak and valley hold periods are noticeable and result in higher cyclic strain amplitudes. Dimples and acquired defects are found in failed specimen by microstructure observation, and their number and size increase under creep‐fatigue loading. Enlarged cyclic strain amplitude and material deterioration caused by creep lead to fatigue life reduction under creep‐fatigue loading. A life prediction model suitable for asymmetric cycling is proposed based on the linear damage summation rule.

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Section: Introductionmentioning

confidence: 99%

Ratcheting‐fatigue behaviour of bainite 2.25Cr1MoV steel with tensile and compressed hold loading at 455°C

Zhao

Chen

et al. 2019

Fatigue Fract Eng Mat Struct

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“…Therefore, an incremental cyclic plasticity model is usually required to predict the stress-strain response of a material subjected to multiaxial loading. Many plasticity models have been developed and have been reviewed [1][2][3][4][5][6]. Totally speaking, researchers dealing with multiaxial plasticity models have con-tinued to develop sophisticated models that attempt to reproduce the detailed material response including transient hardening effects due to non-proportional loading.…”

Section: Introductionmentioning

confidence: 99%

“…A simplified Armstrong-Frederick style plasticity model is pro-posed based on the assumption of Masing material behavior and a newly proposed transient hardening formulation [5]. The Chen-Jiao model is modified to better simulate the cyclic and ratcheting responses of 304 stainless steel under various multiaxial loadings [2,20]. In this modification, the nonproportional parameter of Tanaka and strain memory surface are introduced for modelling the cyclic hardening / softening and isotropic hardening [14,19].…”

Section: Introductionmentioning

confidence: 99%

Stabilized cyclic stress‐strain calculation for metals under multiaxial loading

Qiu

Wang³

et al. 2020

Materialwissenschaft Werkst

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A simple plasticity model for modeling the stabilized cyclic stress-strain responses is developed to consider the effect of non-proportional additional hardening. In the proposed model, the plastic modulus for uniaxial loading is extended to multiaxial loading by introducing the non-proportionality factor and the additional hardening coefficient. The two introduced factors take into account the effects of non-proportional additional hardening, not only on the shape of the loading path, but also on the material and its microstructure. And then, the basic Armstrong-Frederick nonlinear hardening rule is modified to model the evolution of the back stress. The consistency condition is enforced to obtain the relationship between the back stress and plastic modulus. The proposed model requires only six material constants for estimating the stabilized responses. Comparisons between the test results (30CrNiMo8HH steel, SA 333 Gr.6 steel, and 1 %CrMoV steel) and model predictions show that the proposed model predicts relatively accurate stress responses under both proportional and non-proportional loading paths. Keywords: Stabilized response / multiaxial fatigue / plastic constitutive model / nonproportionality factor / additional hardening coefficient Schlüsselwörter: Stabilisierende Resonanz / mehraxiale Belastung / plastisch konstitutives Model / Nichtproportionalitätsfaktor / zusätzlicher Härtungskoeffizient

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“…Khutia el al. 17 presented the dependency of kinematic hardening parameters on the plastic strain surface within the model proposed by Ohno and Wang, 18,19 which presents another alternative to the approach developed by Chaboche et al 6 Abdel-Karim 20 modified the model proposed by Ohno and Wang 18,19 by introducing the radial evanescence term into the model as presented by Burlet and Cailletaud 9 earlier. Another modification to the model was made by Abdel-Karim 21 in order to incorporate the isotropic hardening associated with the kinematic one in the constitutive equations, where the activation of respective hardening was governed by a specific parameter.…”

Section: Introductionmentioning

confidence: 99%

Automated calibration of advanced cyclic plasticity model parameters with sensitivity analysis for aluminium alloy 2024-T351

Peč

Zapletal

Hassan

et al. 2019

Advances in Mechanical Engineering

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The plasticity models in finite element codes are often not able to describe the cyclic plasticity phenomena satisfactorily. Developing a user-defined material model is a demanding process, challenging especially for industry. Open-source Code_Aster is a rapidly expanding and evolving software, capable of overcoming the above-mentioned problem with material model implementation. In this article, Chaboche-type material model with kinematic hardening evolution rules and non-proportional as well as strain memory effects was studied through the calibration of the aluminium alloy 2024-T351. The sensitivity analysis was performed prior to the model calibration to find out whether all the material model parameters were important. The utilization of built-in routines allows the calibration of material constants without the necessity to write the optimization scripts, which is time consuming. Obtaining the parameters using the built-in routines is therefore easier and allows using the advanced modelling for practical use. Three sets of material model parameters were obtained using the built-in routines and results were compared to experiments. Quality of the calibration was highlighted and drawbacks were described. Usage of material model implemented in Code_Aster provided good simulations in a relatively simple way through the use of an advanced cyclic plasticity model via built-in auxiliary functions.

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An improved nonproportional cyclic plasticity model for multiaxial low-cycle fatigue and ratcheting responses of 304 stainless steel

Cited by 55 publications

References 69 publications

Ratcheting‐fatigue behaviour of bainite 2.25Cr1MoV steel with tensile and compressed hold loading at 455°C

Ratcheting‐fatigue behaviour of bainite 2.25Cr1MoV steel with tensile and compressed hold loading at 455°C

Stabilized cyclic stress‐strain calculation for metals under multiaxial loading

Automated calibration of advanced cyclic plasticity model parameters with sensitivity analysis for aluminium alloy 2024-T351

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