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Multi-stage contact model between fractal rough surfaces based on ellipsoidal asperity deformation

  • 19-08-2025
  • Research
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Abstract

This article delves into the complexities of contact mechanics between fractal rough surfaces, introducing a groundbreaking multi-stage contact model that focuses on the deformation of ellipsoidal asperities. The study highlights the limitations of traditional models, such as the GW model and Persson's theory, which either oversimplify the contact area shape or fail to account for the actual deformation of asperities under varying loads. The proposed model addresses these issues by considering the actual deformation of ellipsoidal asperities and incorporating the distribution function of the eccentricity of these asperities, providing a more accurate representation of real-world contact mechanics. The article also explores the influence of fractal parameters and contact shape on contact characteristics, offering valuable insights into the behavior of rough surfaces under different conditions. Through a detailed comparison with existing models and experimental data, the study validates the superiority of the proposed model, demonstrating its high accuracy and nonlinear convergence trend consistent with experimental results. This comprehensive approach makes the article a crucial resource for professionals seeking to understand and predict the contact behavior of fractal surfaces more accurately.

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Title
Multi-stage contact model between fractal rough surfaces based on ellipsoidal asperity deformation
Authors
Linqiang Zhou
Ji Qian
Publication date
19-08-2025
Publisher
Springer Netherlands
Published in
Meccanica / Issue 9/2025
Print ISSN: 0025-6455
Electronic ISSN: 1572-9648
DOI
https://doi.org/10.1007/s11012-025-02038-7
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