Modelling of Static and Dynamic Elastomer Friction in Dry Conditions

IF 4.3 3区材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

ACS Applied Electronic Materials Pub Date : 2024-07-09 DOI:10.3390/lubricants12070250

Fabian Kaiser, Daniele Savio, Ravindrakumar Bactavatchalou

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引用次数: 0

Abstract

Understanding the tribological behavior of elastomers in dry conditions is essential for sealing applications, as dry contact may occur even in lubricated conditions due to local dewetting. In recent decades, Persson and co-authors have developed a comprehensive theory for rubber contact mechanics and dry friction. In this work, their model is implemented and extended, particularly by including static friction based on the bond population model by Juvekar and coworkers. Validation experiments are performed using a tribometer over a wide range of materials, temperatures and speeds. It is shown that the friction model presented in this work can predict the static and dynamic dry friction of various commercial rubber materials with different base polymers (FKM, EPDM and NBR) with an average accuracy of 10%. The model is then used to study the relevance of different elastomer friction contributions under various operating conditions and for different roughness of the counter surface. The present model will help in the development of novel optimized sealing solutions and provide a foundation for future modeling of lubricated elastomer friction.

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干燥条件下的静态和动态弹性体摩擦建模

了解弹性体在干燥条件下的摩擦学行为对于密封应用至关重要，因为即使在润滑条件下，也可能由于局部露湿而发生干接触。近几十年来，Persson 及其合著者开发了一套橡胶接触力学和干摩擦的综合理论。在这项工作中，他们的模型得到了实施和扩展，特别是加入了基于 Juvekar 及其同事的粘结群体模型的静摩擦力。在广泛的材料、温度和速度范围内，使用摩擦仪进行了验证实验。实验结果表明，本研究中提出的摩擦模型可以预测各种商用橡胶材料与不同基础聚合物（FKM、EPDM 和 NBR）的静态和动态干摩擦，平均精确度为 10%。然后，利用该模型研究了在各种操作条件下，不同弹性体对不同粗糙度台面的摩擦贡献的相关性。本模型将有助于开发新型优化密封解决方案，并为未来润滑弹性体摩擦建模奠定基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Electronic Materials Multiple-

CiteScore

7.20

自引率

4.30%

发文量

567

期刊介绍： ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric. Indexed/Abstracted： Web of Science SCIE Scopus CAS INSPEC Portico