Representative contact element size determination for micromechanical contact analysis of self-affine topographies

Carneiro, A.M. Couto; Carvalho, R. Pinto; Pires, F.M. Andrade

doi:10.1016/j.ijsolstr.2020.09.006

Cited by 15 publications

(8 citation statements)

References 54 publications

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“…Therefore, to address the deficiencies in existing methods, some relevant issues need to be dealt with in future research work of modeling adhesive wear to come closer to the physical mechanism and, hence, accurate prediction. These include the use of more realistic factors, such as the geometry of asperity (dimensions, scales, and profile), material properties with elastic-plastic behavior, and representativeness of rough surfaces [ 86 ]. In addition, improving the computing efficiency is of a great importance in almost every numerical method.…”

Section: Discussionmentioning

confidence: 99%

Modeling Adhesive Wear in Asperity and Rough Surface Contacts: A Review

2022

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Wear is one of the most fundamental topics in tribology and adhesive wear is argued as the least avoidable wear type. Numerical techniques have allowed advances in more realistic simulations of adhesive wear mechanisms and promoted our understanding of it. This paper reviews the classic work on wear modeling by Archard and Rabinowicz, followed by a comprehensive summary of the adhesive wear numerical models and techniques based on physical parameters. The studies on wear mechanisms at the asperity level and rough surfaces are separately presented. Different models and their key findings are presented according to the method type. The advantages and deficiencies of these models are stated and future work, such as considering more realistic geometries and material properties for adhesive wear modeling, is suggested.

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Section: Discussionmentioning

confidence: 99%

Modeling Adhesive Wear in Asperity and Rough Surface Contacts: A Review

2022

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“…Therefore, some methods for accurately calculating the real contact area by relatively sparse elements are proposed [19,64]. Based on the distribution law of discrete mesh calculation error, Yastrebov [65,66] proposes a correction formula for calculating the real contact area.…”

Section: Methodsmentioning

confidence: 99%

“…The true or real contact area between two rough surfaces, which is much smaller than the nominal contact area, is the basis for studying the contact mechanics of the rough surface and affects the dynamic properties of the contact surface [19]. Therefore, the study of the calculation method for real contact area has aroused the wide interest of the scientific community [20][21][22][23][24][25].…”

Section: Graphical Abstractmentioning

confidence: 99%

An equivalent calculation method for 3D contact area between two rough surfaces based on 2D profiles

Jing

Meng

Dai

et al. 2022

Preprint

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The calculation of the real contact area between rough surfaces is an important prerequisite for studying the contact characteristics of mechanical joints. However, it is challenging to accurately calculate the real contact area between rough surfaces by existing theoretical and experimental methods. Therefore, an efficient and practical equivalent calculation method for the real contact area between three-dimensional(3D) rough surfaces based on two-dimensional(2D) profiles is presented in this paper. The main advantage of the presented method as compared with those available in the literature is that the real contact area can be predicted only by the section of the 3D rough surfaces in contact, which greatly reduces the computational cost. The sampling strategy of sections is studied to improve the accuracy of the proposed method. The accuracy of the proposed equivalent calculation method is verified by numerical simulation. The results show that the proposed equivalent calculation method can efficiently predict the real contact area between rough surfaces within the scope of engineering application.

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“…On the contrary, a refined approach to contact area computation, based on summing up for each element contribution to the contact area only from a Gauss point nearest to an active node (39), leads to a virtually mesh-independent calculation of the real contact area. For additional comparison, we plot for each of the simulations the contact area obtained using the correction technique based on post-processing of the contact area using the data on the contact perimeter, proposed in (Yastrebov et al, 2017) and recently applied in (Carneiro et al, 2020). The results of this calculation also demonstrate convergence towards the curve corresponding to the refined approach of the contact area computation.…”

Section: Real Contact Area Computationmentioning

confidence: 99%