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<p>Soft elasto-hydrodynamic lubrication (soft EHL), in which the structure is elastically deformed by the pressure of the fluid film, is ubiquitous in industrial machinery. In soft EHL, the structure has a relatively small Young’s modulus and is elastically deformed by the pressure of the fluid film acting on the structure. In this study, we developed a soft EHL model by coupling the moving particle simulation (MPS) method and the structure deformation equation. The proposed model is based on a particle method and has advantages in predicting complex oil geometries under soft EHL conditions. To validate the accuracy of the proposed model, a soft EHL phenomenon was simulated. As a result, the pressure and cylinder deformation obtained by the proposed model were in good agreement with the reference solutions based on the traditional Reynolds equation. In addition, the simulation efficiency of the proposed model was improved by introducing an extended multi-resolution particle technique.</p>

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A soft EHL model using a particle method

  • 期刊论文

  • 发表日期：

    2025年3月25日

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  • Daisuke Yamada,
  • Tetsuro Ninomiya,
  • Shu Hiramoto,
  • Kyuya Matsumoto,
  • Kazuya Shibata,
  • Hideyo Negishi,
  • Kazuaki Maniwa,
  • Shingo Obara

摘要

Soft elasto-hydrodynamic lubrication (soft EHL), in which the structure is elastically deformed by the pressure of the fluid film, is ubiquitous in industrial machinery. In soft EHL, the structure has a relatively small Young’s modulus and is elastically deformed by the pressure of the fluid film acting on the structure. In this study, we developed a soft EHL model by coupling the moving particle simulation (MPS) method and the structure deformation equation. The proposed model is based on a particle method and has advantages in predicting complex oil geometries under soft EHL conditions. To validate the accuracy of the proposed model, a soft EHL phenomenon was simulated. As a result, the pressure and cylinder deformation obtained by the proposed model were in good agreement with the reference solutions based on the traditional Reynolds equation. In addition, the simulation efficiency of the proposed model was improved by introducing an extended multi-resolution particle technique.