Velocity Dependent Friction: Difference between revisions
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This command is used to construct a VDependent friction model object. | This command is used to construct a VDependent friction model object. | ||
It is useful for modeling the behavior of [http://en.wikipedia.org/wiki/Polytetrafluoroethylene"PTFE"] or PTFE-like materials sliding on a stainless steel surface. | It is useful for modeling the behavior of [http://en.wikipedia.org/wiki/Polytetrafluoroethylene"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). | |||
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| '''$transRate''' || transition rate from low to high velocity | | '''$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> | |||
Revision as of 03:14, 23 January 2012
- Command_Manual
- Tcl Commands
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- ndMaterial
- frictionModel
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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>
EXAMPLES:
frictionModel VDependent 1 0.085 0.163 0.77
Code Developed by: Andreas Schellenberg, University of California, Berkeley.