Micromechanical Gurson-based continuum damage under the context of fretting fatigue: Influence of the plastic strain field

Sandoval, C.F.B.; Malcher, L.; Canut, Felipe Azevedo; Araújo, L.M.; Doca, T.; Araújo, J.A.

doi:10.1016/j.ijplas.2019.09.012

Cited by 22 publications

(5 citation statements)

References 27 publications

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“…In this sense, the so-called incremental damage has gained another field of application, where can be observed in Mareau and Morel (2018) and Sandoval et al (2020), in addition to the monotonic conditions, already well established in the literature. This approach has two main formulations: models based on the micromechanics of defect and models based on the Continuous Damage Mechanics (CDM).…”

Section: Introductionmentioning

confidence: 98%

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An improved continuous damage model to estimate multiaxial fatigue life under strain control problems

Ferreira

Campos

Neves

et al. 2022

International Journal of Damage Mechanics

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In this contribution, a modification and application of the Lemaitre damage evolution law is proposed for the problem of fatigue life estimate under low number of cycles. For this, the denominator of damage, considered constant for Lemaitre, was replaced by a function dependent on the stress triaxiality. The new function has a nonlinear and thermodynamically consistent behavior. In addition, the evolution law of the backstress tensor is adopted as proposed by Desmorat, where there is no saturation of the limit value. The formulation is implemented in an academic tool for analysis at one Gauss point, through an implicit integration strategy of the flow equations. The Newton-Raphson method is used to solve a system of nonlinear equations, with two tensor and two scalar equations. Thus, in order to demonstrate the robustness of the model, experimental data from the literature for SAE 1045 and S460N steels are adopted. Proportional and nonproportional axial, torsional and multiaxial loading paths are simulated. Finally, the results have shown that the modification formulation is a good strategy to control the damage evolution in predicting fatigue life. In this sense, the calculated lives by the new proposal are within a scatter band of factor three, both under normal or torsional uniaxial loading conditions, as well as proportional or nonproportional multiaxial conditions.

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Section: Introductionmentioning

confidence: 98%

“…In this sense, the so-called incremental damage has gained another field of application, where can be observed in Mareau and Morel (2018) and Sandoval et al. (2020), in addition to the monotonic conditions, already well established in the literature.…”

Section: Introductionmentioning

confidence: 98%

An improved continuous damage model to estimate multiaxial fatigue life under strain control problems

Ferreira

Campos

Neves

et al. 2022

International Journal of Damage Mechanics

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“…The developments and the applications of coupled Gurson-type damage laws are now addressing yield criteria such as von Mises [30], Hill 48 [31], Hosford [32], CPB06 [33,34] and CPB06ex2 [35]. More specialized developments oriented towards modelling of coupled damage prediction under cyclic fatigue loadings using Chaboche-type constitutive models can also be found [36].…”

Section: Introductionmentioning

confidence: 99%

Accurate numerical prediction of ductile fracture and micromechanical damage evolution for Ti6Al4V alloy

et al. 2023

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A CPB06-based Stewart-Cazacu micromechanical damage model is implemented and validated for Ti6Al4V material. It provides accurate numerical predictions in terms of macromechanical material response and damage accumulation. The SC11−TNT damage model is implemented in the finite element (FE) software Lagamine following a semi-implicit cutting plane algorithm and a well-chosen flow rule approach. The damage of the material is characterized by the porosity ratio contained within the material. It is modelled by void nucleation, growth and coalescence mechanisms. The onset of the coalescence is established by a criterion based onThomason's approach. The macroscopic results obtained by the implemented model demonstrate a strong ability to predict the experimental elastoplastic mechanical behaviour of the material across a full deformation range and different types of loadings. At the microscopic level, the predicted accumulated porosity ratio of the material matrix at fracture exhibits a good correlation with the experimental observations. The element deletion feature, activated when a certain damage threshold is reached, provides a physical description of the loss of load-carrying capacity of the material during fracture.

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“…Under gross slip, it is well known that surface wear plays a dominant effect in increasing contact area [7,8]. Under partial slip, wear is not activated; however, cumulated plasticity can also induce large extension of the contact area depending on contact conditions [9]. Ambrico and Begley [10,11] first proposed loading maps describing the cyclic elastoplastic response of 2D cylinder/plane interfaces enduring fretting stressing.…”

Section: Introductionmentioning

confidence: 99%

Fretting tests for cyclic plastic law identification: Application to a 1XXX aluminium crossed wire contact

Arnaud¹,

Maurel²,

Fouvry

et al. 2023

Tribology International

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Micromechanical Gurson-based continuum damage under the context of fretting fatigue: Influence of the plastic strain field

Cited by 22 publications

References 27 publications

An improved continuous damage model to estimate multiaxial fatigue life under strain control problems

An improved continuous damage model to estimate multiaxial fatigue life under strain control problems

Accurate numerical prediction of ductile fracture and micromechanical damage evolution for Ti6Al4V alloy

Fretting tests for cyclic plastic law identification: Application to a 1XXX aluminium crossed wire contact

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