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Finite deformations govern the anisotropic shear-induced area reduction of soft elastic contacts

机译：有限变形控制软弹性触点的各向异性剪切诱导的面积减少

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摘要

Solid contacts involving soft materials are important in mechanical engineering or biomechanics. Experimentally, such contacts have been shown to shrink significantly under shear, an effect which is usually explained using adhesion models. Here we show that quantitative agreement with recent high-load experiments can be obtained, with no adjustable parameter, using a non-adhesive model, provided that finite deformations are taken into account. Analysis of the model uncovers the basic mechanisms underlying anisotropic shear-induced area reduction, local contact lifting being the dominant one. We confirm experimentally the relevance of all those mechanisms, by tracking the shear-induced evolution of tracers inserted close to the surface of a smooth elastomer sphere in contact with a smooth glass plate. Our results suggest that finite deformations are an alternative to adhesion, when interpreting a variety of sheared contact experiments involving soft materials.
机译：涉及软材料的固体触点在机械工程或生物力学中是重要的。实验地，已经显示这种触点在剪切下显着缩小，这是使用粘合模型来解释的效果。在这里，我们显示可以获得与最近的高负荷实验的定量协议，没有使用非粘合模型的可调参数，条件是考虑有限变形。该模型分析揭示了各向异性剪切诱导的面积减少的基本机制，局部接触提升是主导的。我们通过跟踪靠近光滑的弹性体球体的表面接触的剪切诱导的示踪剂的剪切诱导的示踪器的演化来确定所有这些机制的相关性。我们的结果表明，当解释涉及软材料的各种剪切接触实验时，有限变形是粘合性的替代性。

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  • 来源
    《Journal of the Mechanics and Physics of Solids》 |2020年第10期|104056.1-104056.19|共19页
  • 作者

    J. Lengiewicz; M. de Souza; M.A. Lahmar; C. Courbon; D. Dalmas; S. Stupkiewicz; J. Scheibert;

  • 作者单位

    Department of Engineering Faculty of Science Technology and Medicine University of Luxembourg Luxembourg Institute of Fundamental Technological Research (1PPT) Polish Academy of Sciences Pawihskiego 5B. 02-106 Warsaw Poland;

    Univ Lyon Ecole Centrale de Lyon EN1SE ENTPE CNRS Laboratoire de Tribologie et Dynamique des Systemes LTDS UMR 5513. F-69134 Ecully France;

    Univ Lyon Ecole Centrale de Lyon EN1SE ENTPE CNRS Laboratoire de Tribologie et Dynamique des Systemes LTDS UMR 5513. F-69134 Ecully France Univ Lyon Ecole Centrale de Lyon EN1SE ENTPE CNRS. Laboratoire de Tribologie et Dynamique des Systemes LTDS UMR 5513 F-42100 Saint-Etienne France;

    Univ Lyon Ecole Centrale de Lyon EN1SE ENTPE CNRS. Laboratoire de Tribologie et Dynamique des Systemes LTDS UMR 5513 F-42100 Saint-Etienne France;

    Univ Lyon Ecole Centrale de Lyon EN1SE ENTPE CNRS Laboratoire de Tribologie et Dynamique des Systemes LTDS UMR 5513. F-69134 Ecully France;

    Institute of Fundamental Technological Research (1PPT) Polish Academy of Sciences Pawihskiego 5B. 02-106 Warsaw Poland;

    Univ Lyon Ecole Centrale de Lyon EN1SE ENTPE CNRS Laboratoire de Tribologie et Dynamique des Systemes LTDS UMR 5513. F-69134 Ecully France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Contact mechanics; Friction; Contact area; Elastomer; Full-field measurement;

    机译：接触力学;摩擦;接触面积;弹性体;全场测量;

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