Optimization of Chaboche kinematic hardening parameters by using an algebraic method based on integral equations

Liu, Shijie; Liang, Gengchiau

doi:10.2140/jomms.2017.12.439

Cited by 7 publications

(3 citation statements)

References 20 publications

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“…Figure 12. The comparison between experimental and numerically-generated curves for the procedure proposed by Santus et al [40] for 𝜀𝜀 = ±1% (a) and the fitting to the last stabilized cycle (b) methods has been tested [53][54][55][56]. The optimization technique using the least-square approach is proposed here.…”

Section: Optimization Proceduresmentioning

confidence: 99%

Computational Methods of the Identification of Chaboche Isotropic-Kinematic Hardening Model Parameters Derived from the Cyclic Loading Tests

Wójcik,

Gontarz,

Skrzat

et al. 2024

Adv. Sci. Technol. Res. J.

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The Chaboche-Lemaitre combined isotropic-kinematic hardening model (CKIH) gives an overall information about the material behaviour under cyclic loading. The identification of hardening parameters is a difficult and time-consuming problem. The procedure of the parameters identification using the experimental hysteresis curve obtained in a cyclic loading test under strain control is presented in details here for a S235JR construction steel. The last stabilized cycle extracted from the hysteresis curve is required for the identification of hardening parameters. The model with three backstresses is tested here. The optimization algorithm is also used for the improvement of the agreement between experimental and numerical data. In order to include some uncertainty of experiment and the identification procedure, the authorial algorithm written on the basis of the fuzzy logic soft-computing method is applied here. The results obtained show that the identification procedure presented in this paper ensures the good agreement between the experimental tests and numerical calculations. The correct selection of parameters associated with the hardening is essential for the right description of material behaviour subject to loading in different engineering problems, including in metal forming processes.

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Section: Optimization Proceduresmentioning

confidence: 99%

Computational Methods of the Identification of Chaboche Isotropic-Kinematic Hardening Model Parameters Derived from the Cyclic Loading Tests

Wójcik,

Gontarz,

Skrzat

et al. 2024

Adv. Sci. Technol. Res. J.

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“…Chaboche et al (1979) suggested that the Chaboche hardening model should contain at least three AF hardening laws, which could improve the prediction accuracy of the model at different strain ranges. Liu and Guozhu (2017) used the Levenberg Marquardt nonlinear optimization algorithm to identify the parameters of the CHK-3 Chaboche hybrid hardening model for 304SS, and the model can well recover the stable hysteresis loop of 304SS. Current research on chromium bronze mainly focuses on unidirectional tensile and compressive responses, while little research has been reported on the deformation behavior of the alloy under cyclic loading.…”

Section: Introductionmentioning

confidence: 99%

An investigation on the cyclic deformation and service life of a reusable liquid rocket engine thrust chamber wall

Gao¹,

Zhang²,

Huo³

2023

MMMS

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PurposeRegeneratively cooled thrust chamber is a key component of reusable liquid rocket engines. Subjected to cyclic thermal-mechanical loadings, its failure can seriously affect the service life of engines. QCr0.8 copper alloy is widely used in thrust chamber walls due to its excellent thermal conductivity, and its mechanical and fatigue properties are essential for the evaluation of thrust chamber life. This paper contributes to the understanding of the damage mechanism and material selection of regeneratively cooled thrust chambers for reusable liquid rocket engines.Design/methodology/approachIn this paper, tensile and low-cycle fatigue (LCF) tests were conducted for QCr0.8 alloy, and a Chaboche combined hardening model was established to describe the elastic-plastic behavior of QCr0.8 at different temperatures and strain levels. In addition, an LCF life prediction model was established based on the Manson–Coffin formula. The reliability and accuracy of models were then verified by simulations in ABAQUS. Finally, the service life was evaluated for a regenerative cooling thrust chamber, under the condition of cyclic startup and shutdown.FindingsIn this paper, a Chaboche combined hardening model was established to describe the elastoplastic behavior of QCr0.8 alloy at different temperatures and strain levels through LCF experiments. The parameters of the fitted Chaboche model were simulated in ABAQUS, and the simulation results were compared with the experimental results. The results show that the model has high reliability and accuracy in characterizing the viscoplastic behavior of QCr0.8 alloy.Originality/value(1)The parameters of a Chaboche combined hardening constitutive model and LCF life equation were optimized by tensile and strain-controlled fatigue tests of QCr0.8 copper alloy. (2) Based on the Manson–Coffin formula, the reliability and accuracy of constitutive model were then verified by simulations in ABAQUS. (3)Thermal-mechanical analysis was carried out for regeneratively cooled thrust chamber wall of a reusable liquid rocket engine, and the service life considering LCF, creep and ratcheting damage was analyzed.

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“…The Chaboche model can deal with macroscopic and micromechanical problems in order to identify material parameters using the inverse technique. Liu et al [29], used the Chaboche material model for optimising material parameters and concluded that initial yield stress plays an important role in this optimisation and recommended to ignore the elastic part from the experimental stress-strain curve for the optimisation. In another study, Bari and Hassan [30] compared the performance of five different constitutive models based on their ability to simulate the ratcheting effect and concluded that the Chaboche model performed quite well in capturing the uniaxial ratcheting response.…”

Section: Introductionmentioning

confidence: 99%

Modelling Cyclic Behaviour of Martensitic Steel with J2 Plasticity and Crystal Plasticity

et al. 2019

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In order to capture the stress-strain response of metallic materials under cyclic loading, it is necessary to consider the cyclic hardening behaviour in the constitutive model. Among different cyclic hardening approaches available in the literature, the Chaboche model proves to be very efficient and convenient to model the kinematic hardening and ratcheting behaviour of materials observed during cyclic loading. The purpose of this study is to determine the material parameters of the Chaboche kinematic hardening material model by using isotropic J2 plasticity and micromechanical crystal plasticity (CP) models as constitutive rules in finite element modelling. As model material, we chose a martensitic steel with a very fine microstructure. Thus, it is possible to compare the quality of description between the simpler J2 plasticity and more complex micromechanical material models. The quality of the results is rated based on the quantitative comparison between experimental and numerical stress-strain hysteresis curves for a rather wide range of loading amplitudes. It is seen that the ratcheting effect is captured well by both approaches. Furthermore, the results show that concerning macroscopic properties, J2 plasticity and CP are equally suited to describe cyclic plasticity. However, J2 plasticity is computationally less expensive whereas CP finite element analysis provides insight into local stresses and plastic strains on the microstructural length scale. With this study, we show that a consistent material description on the microstructural and the macroscopic scale is possible, which will enable future scale-bridging applications, by combining both constitutive rules within one single finite element model.

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Optimization of Chaboche kinematic hardening parameters by using an algebraic method based on integral equations

Cited by 7 publications

References 20 publications

Computational Methods of the Identification of Chaboche Isotropic-Kinematic Hardening Model Parameters Derived from the Cyclic Loading Tests

Computational Methods of the Identification of Chaboche Isotropic-Kinematic Hardening Model Parameters Derived from the Cyclic Loading Tests

An investigation on the cyclic deformation and service life of a reusable liquid rocket engine thrust chamber wall

Modelling Cyclic Behaviour of Martensitic Steel with J2 Plasticity and Crystal Plasticity

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