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Slip-stick and the evolution of frictional strength

Author

Listed:
  • Oded Ben-David

    (The Racah Institute of Physics, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel)

  • Shmuel M. Rubinstein

    (The Racah Institute of Physics, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel
    Present address: School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.)

  • Jay Fineberg

    (The Racah Institute of Physics, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel)

Abstract

The minutiae of friction The behaviour of systems as diverse as earthquakes and hard drives is influenced by frictional motion and its strength. What at first glance appears to be a continuous sliding process between touching surfaces is in fact a product of a series of 'slip' and 'stick' events on the microscopic scale. The mechanism of evolution of frictional strength at this level, though, is still unclear. Ben-David et al. have studied the evolution of the local contact area between two sliding bodies (PMMA plastic blocks) and the motion of their interface, and find that it involves four distinct phases. Within microseconds, all the contact area reduction has occurred. This is followed by a rapid slip phase, then a sharp transition to much slower slippage culminating in a 'stick' phase when motion is arrested. After several hundred microseconds the contact area begins to increase again. These results provide a basis for a better understanding of this kind of motion in many technologically important contexts.

Suggested Citation

  • Oded Ben-David & Shmuel M. Rubinstein & Jay Fineberg, 2010. "Slip-stick and the evolution of frictional strength," Nature, Nature, vol. 463(7277), pages 76-79, January.
    • Handle: RePEc:nat:nature:v:463:y:2010:i:7277:d:10.1038_nature08676
    DOI: 10.1038/nature08676
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    Cited by:

    1. Kasra Farain & Daniel Bonn, 2023. "Predicting frictional aging from bulk relaxation measurements," Nature Communications, Nature, vol. 14(1), pages 1-6, December.
    2. Songlin Shi & Meng Wang & Yonatan Poles & Jay Fineberg, 2023. "How frictional slip evolves," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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