Velocity and Pressure Dependent Friction: Difference between revisions
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This command is used to construct a | This command is used to construct a VelPressureDep friction model object. | ||
{| | {| | ||
| style="background:yellow; color:black; width:800px" | '''frictionModel | | style="background:yellow; color:black; width:800px" | '''frictionModel VelPressureDep $frnTag $muSlow $muFast0 $A $deltaMu $alpha $transRate''' | ||
|} | |} | ||
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EXAMPLES: | EXAMPLES: | ||
frictionModel | frictionModel VelPressureDep 1 0.085 0.163 7.0686 0.05 0.08 0.77 | ||
Revision as of 22:21, 31 August 2012
- Command_Manual
- Tcl Commands
- Modeling_Commands
- model
- uniaxialMaterial
- ndMaterial
- frictionModel
- section
- geometricTransf
- element
- node
- sp commands
- mp commands
- timeSeries
- pattern
- mass
- block commands
- region
- rayleigh
- Analysis Commands
- Output Commands
- Misc Commands
- DataBase Commands
This command is used to construct a VelPressureDep friction model object.
| frictionModel VelPressureDep $frnTag $muSlow $muFast0 $A $deltaMu $alpha $transRate |
| $frnTag | unique friction model object tag |
| $muSlow | coefficient of friction at low velocity |
| $muFast0 | initial coefficient of friction at high velocity |
| $A | nominal contact area |
| $deltaMu | pressure parameter calibrated from experimental data |
| $alpha | pressure parameter calibrated from experimental data |
| $transRate | transition rate from low to high velocity |
EXAMPLES:
frictionModel VelPressureDep 1 0.085 0.163 7.0686 0.05 0.08 0.77
REFERENCES:
[1] Tsopelas P., and Constantinou M. C. (1996). "Experimental Study of FPS System in Bridge Seismic Isolation." Earthquake Eng. and Structural Dynamics, VOL. 25, 65-78.
[2] Constantinou M. C., Tsopelas P., Kasalanati A., and Wolff E. D. (1999). Property Modification Factors for Seismic Isolation Bearings. Technical Report MCEER-99-0012, University of Buffalo, Buffalo, New York.
Code Developed by: Andreas Schellenberg, University of California, Berkeley.