Investigating the frictional response of granitic rock surface: An experimental approach

Vikram Vishal, Raktim Das, T. N. Singh

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12 Citations (Scopus)


Rock friction varies as a function of mainly four parameters that are waiting time and velocity of motion between two frictional surfaces, surface roughness and normal stress. In this paper, a study on former two aspects of rock frictional behaviour has been attempted for granitic rock surface. In one experiment, waiting time for which the two surfaces remain in contact is increased from 20 seconds to 18 hours. In the second experiment, waiting time is kept constant for a series of rock slip experiments where the velocity is increased from 10μm/sec to 350μm/sec. The value of critical velocity is obtained from transformation of the stick slip motion to steady motion occurs. The relation of coefficients of dynamic and static friction with increasing velocity of motion is studied and these are used to calculate the frictional constants, namely 'a' and 'b' specific to the chosen simulation type.

Original languageEnglish
Pages (from-to)493-498
Number of pages6
JournalJournal of the Geological Society of India
Issue number4
Publication statusPublished - Oct 2012


  • Frictional constants
  • Rock frictional behaviour
  • Steady motion
  • Stick slip motion

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