An improved kinematic hardening rule describing the effect of loading history on plastic modulus and ratcheting strain

Bai, Jiawei; Jin, Ke; Kou, Yong

doi:10.1007/s00707-022-03469-z

Cited by 4 publications

(3 citation statements)

References 57 publications

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“…where σ 0 is the initial yield stress and R is the isotropic hardening variable. The variable R is used to describe the expansion or contraction of the yield surface and is represented by the isotropic hardening rule [47]:…”

Section: Cyclic Plasticitymentioning

confidence: 99%

“…For example, the Ohno-Wang model [40] cannot describe the plastic modulus of monotonic and cyclic loading stages simultaneously [46]. Bai et al [47] established linear relationships between plastic modulus parameter and loading history. Although it reflects the evolution of the plastic modulus with the loading history, more variables and parameters are introduced at the same time [48].…”

Section: Introductionmentioning

confidence: 99%

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Modeling on magnetization behavior of ferromagnetic material during cyclic deformation

Bai

Jin

Kou

2023

J. Phys. D: Appl. Phys.

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In this paper, a nonlinear magneto-mechanical coupling constitutive model is established to describe the magnetization behavior of ferromagnetic materials under cyclic elastoplastic deformation. The critical state is introduced into the hysteretic magneto-mechanical model. In the critical state, the magnetization rates of loading and unloading are different. A new nonlinear plastic equivalent magnetic field is proposed by considering the effect of pinning sites caused by cross slip dislocation to describe the magnetization behavior under asymmetric cyclic loading. The softening factor and activation condition of plastic modulus parameter are introduced based on the cyclic plastic constitutive model to describe the decrease of plastic modulus. A new magnetization model for ferromagnetic materials under cyclic plastic deformation is established by combining the magneto-mechanical coupling model with the cyclic plastic constitutive model. Compared with the experiments and existing models, it is shown that the proposed model can capture the deformation and magnetization behavior well under cyclic loading.

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Section: Cyclic Plasticitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling on magnetization behavior of ferromagnetic material during cyclic deformation

Bai

Jin

Kou

2023

J. Phys. D: Appl. Phys.

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“…Conducting research on ratcheting behavior is very important in structural component design and mechanical engineering and has important engineering significance and academic value. Many researchers have conducted comprehensive and in-depth research on the ratcheting effect from both experimental and theoretical perspectives, as reviewed by Ohno [1,2], Kang [3], Chaboche [4], and Sun [5], and more recently by Zhao [6], Kan [7], Kang [8], Xu [9], MOSLEMI [10], Bai [11], and Xu L [12] et al…”

Section: Introductionmentioning

confidence: 99%

Study on the Microscopic Mechanism of Axle Steel EA4T during Uniaxial Cyclic Deformation Process

Ren

Yang

Zhao

et al. 2023

Metals

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In order to reveal the dislocation evolution law of body-centered cubic axle steel EA4T during cyclic deformation and provide an experimental basis for the subsequent construction of cyclic constitutive models based on microscopic physical mechanisms, macroscopic deformation experiments were first conducted on axle steel EA4T, including monotonic tensile experiments under different deformation amounts, symmetric strain cycling experiments under a different number of cycles, and ratcheting deformation experiments under a different number of cycles. Then, systematic observations of different samples at different deformation stages were conducted using a Transmission Electron Microscope (TEM) to investigate the dislocation configuration and evolution during strain cycling and ratcheting deformation. The observed results show that the dislocation evolution law of axle steel EA4T during the uniaxial tensile experiment, symmetrical strain cycling, and ratcheting deformation is basically the same, and the dislocation density increases with the increase in plastic deformation and number of cycles. The dislocation configuration gradually develops from low-density dislocation configurations such as dislocation lines and dislocation pileups to high-density dislocation configurations such as severe dislocation tangles and dislocation walls. The microscopic mechanism of the uniaxial ratcheting evolution of axle steel EA4T can be qualitatively explained by the dislocation configuration and evolution.

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Loading history effect on ratcheting behavior: Modelling and simulation

Bai

Jin

Kou

2023

International Journal of Mechanical Sciences

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An improved kinematic hardening rule describing the effect of loading history on plastic modulus and ratcheting strain

Cited by 4 publications

References 57 publications

Modeling on magnetization behavior of ferromagnetic material during cyclic deformation

Modeling on magnetization behavior of ferromagnetic material during cyclic deformation

Study on the Microscopic Mechanism of Axle Steel EA4T during Uniaxial Cyclic Deformation Process

Loading history effect on ratcheting behavior: Modelling and simulation

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