# Uniform Excitation Pattern
The UniformExcitation pattern allows the user to apply a uniform excitation to a model acting in a certain direction. The command is as follows:
```tcl pattern UniformExcitation $patternTag $dir -accel $tsTag <-vel0 $vel0> <-fact $cFactor> ```
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unique tag among load patterns |
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direction in which ground motion acts |
1 - corresponds to translation along the global X axis |
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2 - corresponds to translation along the global Y axis |
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3 - corresponds to translation along the global Z axis |
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4 - corresponds to rotation about the global X axis |
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5 - corresponds to rotation about the global Y axis |
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6 - corresponds to rotation about the global Z axis |
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tag of the TimeSeries series defining the acceleration history. |
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the initial velocity (optional, default=0.0) |
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constant factor (optional, default=1.0) |
NOTES:
Code Developed by: fmk