Velocity Dependent Friction

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Revision as of 03:39, 23 January 2012 by Aschellenberg (talk | contribs)
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This command is used to construct a VDependent friction model object. It is useful for modeling the behavior of "PTFE" or PTFE-like materials sliding on a stainless steel surface. For a detailed presentation on the velocity dependence of such interfaces please refer to Constantinou et al. (1999).

frictionModel VDependent $frnTag $muSlow $muFast $transRate

$frnTag unique friction model object tag
$muSlow coefficient of friction at low velocity
$muFast coefficient of friction at high velocity
$transRate transition rate from low to high velocity


<math>\[\mu = {\mu _{fast}} - \left( {{\mu _{fast}} - {\mu _{slow}}} \right) \cdot {e^{ - transRate\, \cdot \,\left| v \right|}}\]</math>


File:VDepemdentFriction01.png


EXAMPLE:

frictionModel VDependent 1 0.085 0.163 0.77



Code Developed by: Andreas Schellenberg, University of California, Berkeley.