Multi-Linear Velocity Dependent Friction: Difference between revisions

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This command is used to construct a VelDepMultiLinear friction model object.
This command is used to construct a VelDepMultiLinear friction model object.
The friction versus velocity relationship is given by a multi-linear curve that is define by a set of points.
The friction-velocity relationship is given by a multi-linear curve that is define by a set of points.
The slope given by the last two specified points on the positive velocity axis is extrapolated to infinite positive velocities.
The slope given by the last two specified points on the positive velocity axis is extrapolated to infinite positive velocities.
The number of provided velocity points needs to be equal to the number of provided friction points.
The number of provided velocity points needs to be equal to the number of provided friction points.

Revision as of 22:39, 31 August 2012




This command is used to construct a VelDepMultiLinear friction model object. The friction-velocity relationship is given by a multi-linear curve that is define by a set of points. The slope given by the last two specified points on the positive velocity axis is extrapolated to infinite positive velocities. The number of provided velocity points needs to be equal to the number of provided friction points.


frictionModel VelDepMultiLinear $matTag -vel $velocityPoints -frn $frictionPoints

$frnTag unique friction model object tag
$velocityPoints array of velocity points along friction-velocity curve
$frictionPoints array of friction points along friction-velocity curve



EXAMPLE:

frictionModel VelDepMultiLinear 1 -vel 0.0 0.1 2.0 8.0 10.0 -frn 0.163 0.085 0.150 0.163 0.163



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