Investigation on thermal response in fretting sliding with the consideration of plastic dissipation, surface roughness and wear

Shen, Fei; Zhou, Kun

doi:10.1016/j.ijmecsci.2018.08.004

Cited by 26 publications

(8 citation statements)

References 39 publications

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“…The welding simulation procedure is developed in the FE software ABAQUS. In the thermal analysis, the temperature distribution is calculated on the basis of the heat conduction equation . The expression, which includes the material parameter heat conductivity λ , is written as

italicρc \frac{\partial T}{\partial t} ((),,,, x, y, z, t) = \nabla \cdot ([], λ \nabla T ((),,,, x, y, z, t)) + \frac{\partial Q_{V}}{\partial t} ((),,,, x, y, z, t),

where c and ρ are the specific heat capacity and density of the material, respectively.…”

Section: Basic Methods and Theoriesmentioning

confidence: 99%

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Fatigue life prediction for butt‐welded joints considering weld‐induced residual stresses and initial damage, relaxation of residual stress, and elasto‐plastic fatigue damage

Wang

Meng

2019

Fatigue Fract Eng Mat Struct

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Fatigue damage of butt‐welded joints is investigated by a damage mechanics method. First, the weld‐induced residual stresses are determined by using a sequentially coupled thermo‐mechanical finite element analysis. The plastic damage of material is then calculated with the use of Lemaitre's plastic damage model. Second, during the subsequent fatigue damage analysis, the residual stresses are superimposed on the fatigue loading, and the weld‐induced plastic damage is considered as the initial damage via an elasto‐plastic fatigue damage model. Finally, the fatigue damage evolution, the relaxation of residual stress, and the fatigue lives of the joints are evaluated using a numerical implementation. The predicted results agree well with the experimental data.

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italicρc \frac{\partial T}{\partial t} ((),,,, x, y, z, t) = \nabla \cdot ([], λ \nabla T ((),,,, x, y, z, t)) + \frac{\partial Q_{V}}{\partial t} ((),,,, x, y, z, t),

where c and ρ are the specific heat capacity and density of the material, respectively.…”

Section: Basic Methods and Theoriesmentioning

confidence: 99%

“…In the thermal analysis, the temperature distribution is calculated on the basis of the heat conduction equation. 37,38 The expression, which includes the material parameter heat conductivity λ, is written as…”

Section: Temperature Distributionmentioning

confidence: 99%

Fatigue life prediction for butt‐welded joints considering weld‐induced residual stresses and initial damage, relaxation of residual stress, and elasto‐plastic fatigue damage

Wang

Meng

2019

Fatigue Fract Eng Mat Struct

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“…The main heat source is the Joule heating due to the current flowing through contact surfaces. The energy dissipation due to friction and plastic deformation of materials can also cause an increase in material temperature [33]. However, it is much smaller than the Joule heating energy in electrical contacts.…”

Section: Transient Heat Transfer Modelmentioning

confidence: 99%

Numerical Study of Coupled Electrical-Thermal-Mechanical-Wear Behavior in Electrical Contacts

Shen

2021

Metals

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Electrical contacts involve complicated electrical, thermal, and mechanical phenomena. Fretting wear as a surface damage mechanism significantly weakens the performance of electrical contact components. In this study, a numerical approach is developed to investigate the electrical-thermal-mechanical-wear coupling behavior of electrical contacts. An electrical contact conductance law is used with the current conservation model to evaluate the electrical behavior. A transient heat transfer model, including the Joule heating behavior and a thermal contact conductance law, is employed to calculate the temperature field. Both contact conductance laws are related to the contact pressure distribution obtained by the contact stress analysis. Based on the predicted contact stress and relative slip on contact surfaces, the energy wear model is used to study the evolution of fretting wear depth and contact surface geometry. The material properties in these models are temperature-dependent. The proposed numerical approach is implemented in a finite element modeling of electrical contacts, which is validated by comparing the predicted and experimental results of the wear scar profile. The effects of the fretting wear on the electric potential, current density, contact resistance, temperature, and contact pressure are numerically studied.

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“…Several fatigue damage models [15][16][17] are proposed to predict fatigue life and better describe the fatigue damage evolution of materials under fatigue loads. These models have been effectively employed in such fatigue fields as impact, 18 fretting, 19 additive manufacturing, and welding. [20][21][22][23] Recently, some researchers have devoted their efforts to assessing the fatigue behaviour of welded joints by CDM-based approaches.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of low cycle fatigue for welded joints considering welding residual stress and plastic damage under combined bending and local compressive loads

Wang

Meng

2020

Fatigue Fract Eng Mat Struct

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The numerical analysis of low cycle fatigue of HTS‐A steel welded joints under combined bending and local compressive loads are implemented using the damage mechanics approach. First, a finite element numerical simulation of the welding process is employed to extract the welding residual stresses, which are then imported as initial stresses in the subsequent fatigue analysis. Second, a multiaxial fatigue damage model including damage coupled elasto‐plastic constitutive equations and plastic damage evolution formulation is applied to evaluate the mechanical degradation of the material under biaxial fatigue loads. Further, the fatigue lives of the HTS‐A steel welded joints are computed and compared with the experimental results from literature. A series of predicted load‐life curves clearly illustrates the variation of fatigue lives along with the combined loadings. Finally, the effects of local compression on accumulated plastic strain and fatigue damage are studied in detail. It is revealed that the local compression induces a damage competition between two critical zones.

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Investigation on thermal response in fretting sliding with the consideration of plastic dissipation, surface roughness and wear

Cited by 26 publications

References 39 publications

Fatigue life prediction for butt‐welded joints considering weld‐induced residual stresses and initial damage, relaxation of residual stress, and elasto‐plastic fatigue damage

Fatigue life prediction for butt‐welded joints considering weld‐induced residual stresses and initial damage, relaxation of residual stress, and elasto‐plastic fatigue damage

Numerical Study of Coupled Electrical-Thermal-Mechanical-Wear Behavior in Electrical Contacts

Numerical analysis of low cycle fatigue for welded joints considering welding residual stress and plastic damage under combined bending and local compressive loads

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