Some further validations and comparison of the Bearing Area Model (BAM)\n for adhesion of rough surfaces

2018/01/02 by Ciavarella, M., M. Ciavarella
Engineering · #Adhesion, Friction, and Surface Interactions #Advanced Measurement and Metrology Techniques #Composite Material Mechanics #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Surface Roughness and Optical Measurements

paper · pdf · doi:10.48550/arxiv.1801.00717

openalex publication_date 2018/01/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In the present short note, we attempt further validations and comparisons of\na recent simple model for the estimate for adhesion between elastic (hard)\nrough solids with Gaussian multiple scales of roughness, BAM (Bearing Area\nModel) belonging to a DMT class of models. In one case, we use the GJP\n(Generalized Johnson Parameter) model, which is an empirical fit validated on\nthe same (and so far most extensive) set of data on which BAM was validated,\nnamely that of Pastewka and Robbins. In the second case, we compare with\nanother approximate DMT theory, that of Persson and Scaraggi, which turns out\nextremely close to the BAM model, despite much more complex: GJP however can\nlead to significant discrepancies.\n

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