Cyclic hardening and softening behavior of the low yield point steel BLY160: Experimental response and constitutive modeling

Xu, Lihua; Nie, Xin; Fan, Jian‐Sheng; Tao, Mu‐Xuan; Ding, Ran

doi:10.1016/j.ijplas.2015.10.009

Cited by 109 publications

(44 citation statements)

References 48 publications

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“…The strain‐range dependence of cyclic hardening has also been observed in other metals (e.g. ). Therefore, the strain‐range dependence of cyclic hardening must be considered in the constitutive modeling of cyclic plasticity.…”

Section: Introductionmentioning

confidence: 54%

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Resetting scheme for plastic strain surface in constitutive modeling of cyclic plasticity

et al. 2017

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Key wordsCyclic plasticity, constitutive model, cyclic hardening, strain range dependence, plastic strain surface.A resetting scheme is proposed for correctly evaluating the plastic strain range to analyze structural components subjected to regular cyclic loading following pre-loading. In this scheme, a plastic strain surface, referred to as the plastic-strainrange surface in the present paper, is reset to a point and re-evolves every cycle, with its size at the end of the last cycle considered to be the plastic strain range of the current cycle. This resetting scheme provides a definite value for the evolution parameter of the plastic-strain-range surface irrespective of the amounts of cyclic hardening, pre-straining, and ratcheting. The resetting scheme is implemented in a cyclic viscoplastic model in finite element methods, and is applied to analyze a notched bar subjected to cyclic loading at its ends. Furthermore, the validity of the resetting scheme for non-proportional cyclic loading is examined by analyzing the cyclic behavior along elliptic and rhombic strain paths. It is shown that the resetting scheme allows the use of a definite value for the evolution parameter of the plastic-strain-range surface in the presence of any cyclic hardening and/or ratcheting. Moreover, it is shown that the resetting scheme can be valid for cyclic loading with a certain degree of non-proportionality.

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Section: Introductionmentioning

confidence: 54%

“…However, currently, no definite approach is available to identify the evolution parameters. Consequently, various values of the evolution parameters have been selected or assumed . It is therefore worthwhile to develop a scheme that can provide definite values of the evolution parameters.…”

Section: Introductionmentioning

confidence: 99%

Resetting scheme for plastic strain surface in constitutive modeling of cyclic plasticity

et al. 2017

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“…Although the Chaboche's isotropic‐kinematic hardening (CIKH) model has been used to predict the ratcheting behaviour of cyclic hardening/softening materials, its applicability to model CS materials is not systematically examined. The IH parameters for CS materials cannot be evaluated from the change in stress amplitudes with fatigue cycles for cyclic hardening (or softening) materials.…”

Section: Introductionmentioning

confidence: 99%

Prediction of asymmetric cyclic‐plastic behaviour for cyclically stable non‐ferrous materials

Nath

Barai

Ray

2019

Fatigue Fract Eng Mat Struct

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Investigation on asymmetric cyclic‐plastic or ratcheting behaviour of non‐ferrous materials has received relatively little attention compared with ferrous materials. Ratcheting behaviour of materials is generally simulated using isotropic‐kinematic hardening models; however, for materials showing cyclically stable response, isotropic hardening is often not accounted for the constitutive modelling. A methodology based on Chaboche's isotropic‐kinematic hardening (CIKH) model with the consideration of genetic algorithm for optimization of initial estimates of the CIKH parameters is used in this study. The investigated plastic responses incorporate both symmetric strain‐controlled hysteresis loops and ratcheting behaviour. The suggested approach satisfactorily predicts the reported plastic response of cyclically stable non‐ferrous alloys based on aluminum, zirconium, and titanium.

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“…Several material models addressing the specific requirements of cyclic plasticity behavior have been proposed in the literature . These models utilize different flow rules for kinematic and isotropic hardening and show good agreement with material tests for prediction of ratcheting rate and calculation of a stabilized stress strain state under cyclic softening or hardening.…”

Section: Introductionmentioning

confidence: 99%

High cycle fatigue analysis in the presence of autofrettage compressive residual stress

Okorokov

Mackenzie

Gorash

et al. 2018

Fatigue Fract Eng Mat Struct

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An experimental and numerical investigation of the effect of residual compressive stress on the high cycle fatigue life of notched low carbon steel test specimens is presented. Experimentally determined cyclic stress strain curves for S355 low carbon steel are utilized in a finite element analysis plasticity modelling framework incorporating a new cyclic plasticity material model representative of cyclic hardening and softening, cyclic mean stress relaxation, and ratcheting behaviors. Fatigue test results are presented for standard tensile fatigue test specimens and novel double notch specimens. Double notch specimens are tested with and without compressive residual stress prior‐induced through tensile overload. It is shown that cyclic plasticity phenomena have a significant influence on the induced residual stress distribution and also on material behavior when fatigue tested in the high cycle regime. It is observed that higher initial compressive residual stresses magnitude does not necessarily lead to a longer fatigue life. Finite element analysis using the new cyclic plasticity material model shows this behavior is due to combined residual stress redistribution under fatigue test cyclic loading and cyclic hardening effects. A fatigue life methodology based on the stress‐life approach augmented by a critical distance method is proposed and shown to give good agreement with experimental results for test specimens with no induced residual stress. The results obtained for specimens with induced residual stress are more conservative, but the degree of conservatism is significantly lower than that in the conventional stress life approach. The proposed methodology is therefore suitable for analysis and design assessment of components with pre‐service induced compressive residual stress, such as autofrettaged pressure components.

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Cyclic hardening and softening behavior of the low yield point steel BLY160: Experimental response and constitutive modeling

Cited by 109 publications

References 48 publications

Resetting scheme for plastic strain surface in constitutive modeling of cyclic plasticity

Resetting scheme for plastic strain surface in constitutive modeling of cyclic plasticity

Prediction of asymmetric cyclic‐plastic behaviour for cyclically stable non‐ferrous materials

High cycle fatigue analysis in the presence of autofrettage compressive residual stress

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