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This command is used to construct a UniformExcitation load pattern object.
pattern UniformExcitation $patternTag $dir -accel (TimeSeriesType arguments) <-vel0 $ver0>
$patternTag |
unique pattern object tag |
$dir |
direction of excitation (1, 2, or 3) used in formulating the inertial loads for the transient analysis. |
TimeSeriesType arguments |
TimeSeries object associated with the acceleration record used in determining the inertial loads. |
$vel0 |
initial velocity to be assigned to each node (optional, default: zero) |
NOTE: The TimeSeries object is handled by the Tcl interpreter as a list and can be defined a-priori and given a variable name.
EXAMPLE:
set Gaccel "Series -dt $dt -filePath $outFile -factor $GMfatt"; # time series information
pattern UniformExcitation 2 1 -accel $Gaccel; # create uniform excitation with IDtag 2 in direction 1
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