How do viscoelastic objects begin to slide?
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- Iwashita Wataru
- Graduate School of Engineering Science, Osaka University
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- Matsukawa Hiroshi
- College of Science and Engineering, Aoyama Gakuin University
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- Otsuki Michio
- Graduate School of Engineering Science, Osaka University
Bibliographic Information
- Other Title
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- 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
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- Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science
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Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science 2021 (0), 1Ca12S-, 2021
The Japan Society of Vacuum and Surface Science
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Details 詳細情報について
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- CRID
- 1390290493076873472
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- NII Article ID
- 130008134052
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- ISSN
- 24348589
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed