Modelling adhesive contact problems involving a layered elastic solid and cylindrical indenter using Lennard Jones potential

Chong, William Woei Fong; Chidlow, S.J.

doi:10.1016/j.mechmat.2015.01.006

Cited by 8 publications

(4 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Consideration of the contact pressure and surface deflection in isolation describe the interfacial contact behaviour but the sub-surface stress fields must be determined to fully understand the characteristic of the contact throughout the depth of the layered solid. In this study, the maximum principal stress is computed as previous investigations by [21] and [27] have used these stresses so an easy comparison with these investigations can be made. Throughout this section, we produce results for two different types of coatings: hard (µ 1 /µ 0 = 2) and soft (µ 1 /µ 0 = 0.5).…”

Section: Investigating the Full Contact Problem Combining Adhesion Anmentioning

confidence: 99%

“…Sergici et al [19] applied a Maugis type adhesive model to investigate the contact between a spherical indenter and an elastic layered solid. More recently, Chidlow et al [20] and Chong and Chidlow [21] introduced surface adhesion via the Dugdale and Lennard-Jones potential respectively to simulate a rigid cylindrical geometry indenting a graded elastic layered solid comprising a FGM perfectly bonded to a homogeneous substrate.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysing the effects of sliding, adhesive contact on the deformation and stresses induced within a multi-layered elastic solid

Chong

Chidlow

2016

Mechanics of Materials

Self Cite

View full text Add to dashboard Cite

Chong, WWF and Chidlow, SJAnalysing the effects of sliding, adhesive contact on the deformation and stresses induced within a multi-layered elastic solid http://researchonline.ljmu.ac.uk/7045/ Article LJMU has developed LJMU Research Online for users to access the research output of the University more effectively. Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Users may download and/or print one copy of any article(s) in LJMU Research Online to facilitate their private study or for non-commercial research. You may not engage in further distribution of the material or use it for any profit-making activities or any commercial gain.The version presented here may differ from the published version or from the version of the record. Please see the repository URL above for details on accessing the published version and note that access may require a subscription. AbstractThis paper presents a mathematical model of sliding, adhering contact between a rigid parabolic indenter and a multi-layered elastic solid, which is assumed to comprise of a homogeneous coating bonded through a functionallygraded transitional layer to a homogeneous substrate. The adhesive forces in this investigation are modelled using Lennard-Jones potential and an iterative algorithm is proposed that solves for the contact pressure, surface displacement and sub-surface stresses resultant within the layered solid. The effects of surface adhesion and different material properties such as varying coating/transition layer thickness and coating hardness on the solution of the contact problem are subsequently investigated in detail. The numerical approach presented in this paper demonstrates the significance of having a suitable mathematical representation for the traction distribution along the sliding, adhering contact. It is found that under weakly adhering conditions, the assumption of only Coulombic traction suffices to determine the displacements and subsurface stresses within the multi-layered solid. However, it is noted that stress concentrations within the material begin to propagate through all three layers of the elastic solid with increased surface adhesion, which could potentially induce plasticity and lead to material ploughing under sliding. The proposed model allows us to further investigate and improve our understanding of the combined effects of traction and boundary adhesion in sliding contacts, which can be used to inform the design of materials needed in such conditions.

show abstract

Section: Investigating the Full Contact Problem Combining Adhesion Anmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysing the effects of sliding, adhesive contact on the deformation and stresses induced within a multi-layered elastic solid

Chong

Chidlow

2016

Mechanics of Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…El obtener una óptima resistencia al desgaste [5], depende de la morfología de la superficie [6], la estructura física, la composición química y la rugosidad [7]. Estos tratamientos mejoran las propiedades tribológicas [8,9,10], logrando extender la vida útil en las piezas de acero utilizadas en los sistemas mecánicos; lo que ha llevado a reconocer el valor del análisis de las superficies en donde se aplicó un tratamiento termoquímico [11].…”

Section: Introductionunclassified

Análisis experimental y teórico del ensayo de adherencia capa – sustrato en un acero DIN UC1 tratado termoquímicamente por borurización

Martínez-Vázquez¹,

Pérez-Pérez²,

Rodríguez-Ortiz³

et al. 2020

JSI

View full text Add to dashboard Cite

In this work, the effect of the boronizing thermochemical treatment on the adherence and surface morphology of the boride layer formed in DIN UC1 steel was evaluated. The process was carried out by packing at the temperature of 1273 K, at the times of 4800, 6000, 7200 and 14400 seconds. The HRC adherence test based on the VDI 1398 standard, was simulated in COMSOL 5.0®; analysing the effect of the thickness of the boride layer and the roughness on the Von Mises stress, in addition to the stress on the indentation footprint; in which it was observed that by increasing the thickness of the layer from 22.2 to 37.8 µm the stresses increased, and therefore the adhesion of the layer on the substrate improved, which causes only the formation of microcracks. On the other hand, in the greater layer thickness (60.04 µm) the layer delaminates. Therefore, for an industrial application of DIN UC1 steel treated thermochemically by borurization, layer thicknesses up to 37.8 µm are recommended.

show abstract

“…To simulate the adhesion phenomenon, the potential function is incorporated into the FEM. 10–14 A more widely used potential function is LJ potential function because of its simplicity. Bortoleto et al.…”

Section: Introductionmentioning

confidence: 99%

Adhesive contact of a diamond sphere with an iron substrate caused by interatomic interaction

Zeng

Wang

Qin

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

By incorporating the adhesive force as a body force in the finite element method, the adhesive contact between a diamond sphere and the iron substrate is studied. The adhesive force is derived from Morse potential by integrating the pair potential function over the spherical domain. Based on the tensile behaviors of iron nanowires, the elastic and elastoplastic material parameters are obtained for the substrate. As the radius of the sphere is larger than 320 nm and the maximum depth of indentation is one-tenth of the radius of the sphere, the adhesion caused by interatomic interaction between diamond and iron is small enough to ignore. Then take the sphere whose radius is 20 nm as an example, the results of a single load–unload cycle and multiple load–unload cycles are discussed. In the contact process between the sphere and the surface, the phenomena jump-to-contact and jump-off-contact were observed. Further, the stress distributions inside the substrate and the pressure distribution are investigated. With the analysis of the results, the proposed method can be used to simulate the mechanical behaviors under micro-nano scale contact.

show abstract

Modelling adhesive contact problems involving a layered elastic solid and cylindrical indenter using Lennard Jones potential

Cited by 8 publications

References 35 publications

Analysing the effects of sliding, adhesive contact on the deformation and stresses induced within a multi-layered elastic solid

Analysing the effects of sliding, adhesive contact on the deformation and stresses induced within a multi-layered elastic solid

Análisis experimental y teórico del ensayo de adherencia capa – sustrato en un acero DIN UC1 tratado termoquímicamente por borurización

Adhesive contact of a diamond sphere with an iron substrate caused by interatomic interaction

Contact Info

Product

Resources

About