Coefficient of restitution and linear–dashpot model revisited

By T. Schwager, Thorsten Pöschel. 2007

190 citations recorded by the source corpus.

With the assumption of a linear–dashpot interaction force, the coefficient of restitution, $$\varepsilon_d^0(k, \gamma)$$ , can be computed as a function of the elastic and dissipative material constants, k and γ by integrating Newton’s equation of motion for an isolated pair of colliding particles. If we require further that the particles interact exclusively repulsive, which is a common assumption in granular systems, we obtain an expression $$\varepsilon_d(k, \gamma)$$ which differs even qualitatively from the known result $$\varepsilon_d^0(k, \gamma)$$ . The expression $$\varepsilon_d(k, \gamma)$$ allows to relate Molecular Dynamics simulations to event-driven Molecular Dynamics for a widely used collision model.

Subfields: Computational Mechanics, Geophysics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/cf53ad514214789ddbd26f0b61112f69ad1a871e

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In Computational Mechanics

  1. Yongqi Wang
  2. Shiva P. Pudasaini
  3. Ronaldo I. Borja
  4. Jan-Thomas Fischer

In Geophysics

  1. Shiva P. Pudasaini
  2. Ronaldo I. Borja

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