Modelling coupled normal and tangential tractions in adhesive contacts

Salehani, Mohsen Khajeh; Irani, Nilgoon; Müser, Martin H.; Nicola, Lucia

doi:10.1016/j.triboint.2018.03.022

Cited by 20 publications

(7 citation statements)

References 36 publications

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“…In this study, only the purely normal contact problem associated with mode-I crack is modeled. The present model can also be extended to other complex cases in mode-I, II, and III and/or with bi-material interface cracks, e.g., the purely normal contact considering the interfacial friction (Khajeh Salehani et al, 2018) and adhesive friction (Khajeh Salehani et al, 2019). The calculation of tangential surface displacement, as well as new crack propagation and nucleation criterion, must be added to the present model.…”

Section: Discussionmentioning

confidence: 99%

Adhesive Boundary Element Method Using Virtual Crack Closure Technique

Zhou

2021

Front. Mech. Eng.

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In this study, a new adhesive contact model is built upon a boundary element method (BEM) model developed by Pohrt and Popov (2015). The strain energy release rate (SERR) on the edge of the bonding interface is evaluated using Virtual Crack Closure Technique (VCCT) which is shown to have better accuracy and weaker mesh-size dependency than the closed-form SERR formula derived by Pohrt and Popov. A composite delamination criterion is proposed for crack nucleation and propagation. Numerical results predicted by the present model are in good agreement with the analytical solutions of two classic problems, namely, the axisymmetric parabolic contact and the sinusoidal waviness contact in the plane strain condition. The model of Pohrt and Popov can achieve a similar accuracy for the axisymmetric parabolic contact where the mesh grid is non-conforming to the crack front. Once the conforming mesh grid is used, the accuracy of their model is significantly deteriorated, especially at high work of adhesion and high mesh density. In both BEM models, however, the crack nucleation is found to be mesh-dependent which may be solved by introducing an upper limit for the tensile normal traction.

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Section: Discussionmentioning

confidence: 99%

Adhesive Boundary Element Method Using Virtual Crack Closure Technique

Zhou

2021

Front. Mech. Eng.

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“…The sealing interface is formed when two contact surfaces approached each other under the act of tightening torque. The effect of normal force on the average separation is much larger than the tangential force [33]. Thus, in this paper, only the normal contact force is taken into account.…”

Section: Normal Contact Forcementioning

confidence: 99%

“…However, few of the existing methods considering the yield hardening effect, most of them adopted the elastic-perfectly plastic material assumption instead when studying plastic contact mechanism [29][30][31]. Although several studies considering the yield hardening effect were conducted to reveal surface properties, such as stiffness and indentation depth, [32,33], it's still not clear how to include yield hardening in the Persson contact mechanic approach and the support for leakage rate prediction remains limited. All above make the results that the existing models are not suitable to predict the leakage rate under the effect of yield hardening.…”

Section: Introductionmentioning

confidence: 99%

A novel analytic model for sealing performance of static metallic joint considering the yield hardening effect

Deng

Luo

Zhang

et al. 2023

Int J Adv Manuf Technol

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The static metallic joints' sealing performance is deeply impacted by the plastic deformation and the interfacial separation of the contact surfaces with self-affine roughness. The yield hardening effect, unavoidable at the contact interface, is of vital importance to the plastic deformation and the distribution of the interfacial separation. However, most of the previous research ignores the effect of the yield hardening, assuming that the contact surfaces are elastic-perfectly plastic. To address the problem, a novel analytic model for investigating the sealing performance under the effect of yield hardening has been developed in this paper. Utilizing the measured data of contact surfaces as input, the corresponding leakage rates are calculated. Besides, the contact stress distribution as well as the real contact area at the interface are also discussed. The sealing experiments are carried out accordingly, verifying that the proposed model owns the ability to predict the leakage rate under the effect of yield hardening.

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“…In particular, it was shown that roughness can both reduce and increase the adhesion of surfaces, which can be used for developing systems with controllable adhesive properties. Furthermore, adhesive contact has been investigated by taking other effects into account such as surface tension (Karpitschka et al, 2016) or adhesion in presence of a liquid (Charlaix and Crassous, 2005), as well in tangential motion (Waters and Guduru, 2010;Salehani et al, 2018;Papangelo et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Influence of Chemical Heterogeneity and Third Body on Adhesive Strength: Experiment and Simulation

Lyashenko

Popov

2021

Front. Mech. Eng.

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We investigate experimentally and numerically the influence of chemical heterogeneity and of third-body particles on adhesive contact. Chemical heterogeneity is generated by chemical treatment of the contacting bodies changing locally the surface energy. For studying the influence of the third body, two types of particles are used: sand particles with various geometrical shapes and sizes, and steel spheres of equal radius. Dependencies of the normal force on the indentation depth at both indenting and pull-off as well as the evolution of the contact configuration are investigated. Corresponding numerical simulations are carried out using the boundary element method (BEM).

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Modelling coupled normal and tangential tractions in adhesive contacts

Cited by 20 publications

References 36 publications

Adhesive Boundary Element Method Using Virtual Crack Closure Technique

Adhesive Boundary Element Method Using Virtual Crack Closure Technique

A novel analytic model for sealing performance of static metallic joint considering the yield hardening effect

Influence of Chemical Heterogeneity and Third Body on Adhesive Strength: Experiment and Simulation

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