Numerical simulation of cyclic behavior of ductile metals with a coupled damage–viscoplasticity model

Khoei, A.R.; Eghbalian, Mahdad

doi:10.1016/j.commatsci.2011.12.008

Cited by 14 publications

(4 citation statements)

References 35 publications

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“…Enaki and Macovei 15 proposed an RICC model and a new method to evaluate fatigue crack closure, simulate fatigue crack closure, perform crack closure, and evaluate real cracks in use. Khoei and Eghbalian 16 studied the evolution pattern of the damage and destruction of ductile metals in cyclic loading; their case study analyzed the fatigue behavior and life assessment of the alloy and compared the results with the experimental data. Aktaaet al 17 developed a new fracture mechanics method to determine the mode varying crack loading and to predict the crack expansion capacity.…”

Section: Literature Reviewmentioning

confidence: 99%

Residual life evaluation of remanufacturing blanks considering the crack closure

Hua

Fang

Zhou

et al. 2022

Advances in Mechanical Engineering

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The nonlinear continuous fatigue cumulative damage model proposed by Chaboche was modified considering the effect of crack closure on fatigue damage, and the fatigue cumulative damage and residual life evaluation model of remanufactured blanks was obtained. The related parameters of the modified model were obtained from the data of symmetric cyclic tensile and compression fatigue tests. The residual life evaluation model of remanufactured blanks was verified by the two-stage loading (high and low loading and low and high loading) tensile and compressive fatigue test. The results show that the calculated values of the model are in good agreement with the test values, which proves that the modified model can accurately predict the residual life of remanufactured blanks.

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Section: Literature Reviewmentioning

confidence: 99%

Residual life evaluation of remanufacturing blanks considering the crack closure

Hua

Fang

Zhou

et al. 2022

Advances in Mechanical Engineering

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“…Numerous nonlinear constitutive models of elastoviscoplastic behavior have been established to study creep and fatigue behavior, and a detailed description of these is given in Aubertin et al (1991). Chaboche's constitutive model is suitable for analysis of a range of small inelastic strains in metals at high temperatures (Khoei and Eghbalian, 2012). Some studies (Ambroziak, 2000;Ambroziak and Klosowski, 2005;Ambroziak et al, 2006) further examined the Chaboche model in the context of damage and implemented the continuum damage in the elastoviscoplastic constitutive equations into a finite-element model to provide numerical examples.…”

Section: Introductionmentioning

confidence: 99%

Study of creep–fatigue behavior in a 1000 MW rotor using a unified viscoplastic constitutive model with damage

Buhl

Klenk

et al. 2015

International Journal of Damage Mechanics

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A unified viscoplastic constitutive model with damage is presented to describe creep–fatigue deformation behavior. Creep and fatigue tests under different temperature and loading conditions were conducted to validate the material model. Good agreement was achieved between the simulated and measured values. The material model was further applied to a specific part of a steam turbine rotor for numeric investigation of the creep–fatigue behavior. The multiaxial mechanical behavior of the rotor was studied in detail in terms of temperature, von Mises stress, equivalent strain, accumulated plastic strain, and damage. The results illustrate that the stress is concentrated on the notch of the groove. In addition, although the accumulation of damage at the rotor locations is dominated by creep behavior, the results actually disclose that the combination of creep and fatigue deformation behavior further accelerate the damage.

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“…As these two goals of component design suggest, an internal damage variable needs to be included in the description of strain versus time or cycles at any location in the component. A detailed literature survey of damage applications in stress–strain behavior is provided in paper (Khoei and Eghbalian, 2012). The existing research includes studies that have modeled fatigue and creep damage by coupling two separate damage variables (Xiao, 2004), developed a coupled damage-visco-plastic constitutive model (Gomez and Basaran, 2005), and explored the relationship between the continuum damage mechanics (CDM) and porous metal plasticity models (Steglich et al., 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Other studies (Ambroziak, 2005; Ambroziak and Klosowski, 2007; Ambroziak et al., 2006) have further examined the Chaboche model with damage and implemented the continuum damage in the elasto-viscoplastic constitutive equations into the FE model to provide numerical examples. Recently, Khoei and Eghbalian (2012) established a coupled damage-viscoplasticity model to numerically investigate the evolution of ductile damage leading to failure, wherein the damage variable was derived based on the plastic strain behavior. Remy et al.…”

Section: Introductionmentioning

confidence: 99%

A unified viscoplastic constitutive model with damage for multi-axial creep–fatigue loading

Buhl

Klenk

2014

International Journal of Damage Mechanics

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A unified viscoplastic constitutive model with damage is presented to describe creep–fatigue deformation behavior. The primary improvement on the existing models is to introduce creep and fatigue damage variables into the constitutive equations of adapted complexity. The material model, which is developed from the thermodynamic framework, combines nonlinear isotropic and kinematic hardening variables, and is implemented using a user-defined subroutine. A standard specimen and a hollow cylinder are used to carry out uniaxial and multi-axial creep–fatigue tests to validate the material model. Good agreement is obtained between the simulation and the measurement under various thermo-mechanical loading paths.

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Numerical simulation of cyclic behavior of ductile metals with a coupled damage–viscoplasticity model

Cited by 14 publications

References 35 publications

Residual life evaluation of remanufacturing blanks considering the crack closure

Residual life evaluation of remanufacturing blanks considering the crack closure

Study of creep–fatigue behavior in a 1000 MW rotor using a unified viscoplastic constitutive model with damage

A unified viscoplastic constitutive model with damage for multi-axial creep–fatigue loading

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