Uniform Excitation Pattern
- Command_Manual
- Tcl Commands
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- model
- uniaxialMaterial
- ndMaterial
- frictionModel
- section
- geometricTransf
- element
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- timeSeries
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- DataBase Commands
The UniformExcitation pattern allows the user to apply a uniform excitation to a model acting in a certain direction. The command is as follows:
| pattern UniformExcitation $patternTag $dir -accel $tsTag <-vel0 $vel0> <-fact $cFactor> |
| $patternTag | unique tag among load patterns |
| $dir | direction in which ground motion acts |
| 1 - corresponds to translation along the global X axis | |
| 2 - corresponds to translation along the global Y axis | |
| 3 - corresponds to translation along the global Z axis | |
| 4 - corresponds to rotation about the global X axis | |
| 5 - corresponds to rotation about the global Y axis | |
| 6 - corresponds to rotation about the global Z axis | |
| $tsTag | tag of the TimeSeries series defining the acceleration history. |
| $vel0 | the initial velocity (optional, default=0.0) |
| $cFactor | constant factor (optional, default=1.0) |
NOTES:
- The responses obtained from the nodes for this type of excitation are RELATIVE values, and not the absolute values obtained from a multi-support case.
Code Developed by: fmk