How do viscoelastic objects begin to slide?

DOI

Bibliographic Information

Other Title
  • 粘弾性体はどうやって滑りだすか
  • —relation between precursor slip and friction coefficient—
  • —前駆滑りと摩擦係数の挙動—

Abstract

<p>Recent studies have revealed that Amontons' law of friction systematically breaks down for viscoelastic objects due to precursor slips occurring before the onset of bulk sliding in 2D system. However, it is not clear whether this result is applicable to more realistic 3D systems. In this study, we numerically investigate the slip motion of a 3D viscoelastic object on a solid substrate using a finite element method to resolve the problem mentioned above. The result indicates that the behavior of precursor slips and the macroscopic static friction coefficient depends on the pressure and the size of the object. Our theoretical analysis of a 1D effective model clarifies that the bulk sliding results from the instability associated with the competition between a velocity-weakening local friction and the bulk viscosity. The instability explains the dependence of the macroscopic static friction coefficient on the pressure and the size of the object.</p>

Journal

Details 詳細情報について

  • CRID
    1390290493076873472
  • NII Article ID
    130008134052
  • DOI
    10.14886/jvss.2021.0_1ca12s
  • ISSN
    24348589
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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