PeerNGAMotion: Difference between revisions

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This command is used to construct a TimeSeries object which, similar to a Path TimeSeries, the load factor obtained is dependent on a series of points obtained from a file. The difference is that the file is obtained from the PeerNGA strong motion database using an internet connection.  
This command is used to construct a TimeSeries object which, similar to a Path TimeSeries, the load factor obtained is dependent on a series of points obtained from a file. The difference is that the file is obtained from the [http://peer.berkeley.edu/nga/ Peer NGA strong motion database] using an internet connection.  


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Revision as of 23:45, 16 February 2010

This command is used to construct a TimeSeries object which, similar to a Path TimeSeries, the load factor obtained is dependent on a series of points obtained from a file. The difference is that the file is obtained from the Peer NGA strong motion database using an internet connection.

uniaxialMaterial PeerNGA $tag $eqMotion $factor <-dT $dT> <-nPTS $nPts>

$tag unique tag among TimeSeries objects.
$eqMotion the PEER NGA name of the motion (a string containing the earthquake name, station & dirn)
$factor factor to be applied to the data points, if accel record type you want to specify G
$nPts optional, if provided will set the variable nPts equal to number of data points found in record
$dT optional, if provided will set the variable dT equal to time interval between points in the record


NOTES:

  • If the time in the domain does not match a data point in record, linear interpolation is performed between nearest points in record.
  • The command can be used with the results obtained from the searchPeerNGA command (hence the craziness of the $eqMotion names).

EXAMPLE

To create 2 time series for two horizontal motions recorded for the Borrego Mtn 1968-04-09 earthquake recorded at the USGS 117 El Centro Array #9 station

timeSeries PeerNGAMotion 1 /BORREGO/A-ELC180 $G -dT dt -NPTS nPts

timeSeries PeerNGAMotion 2 /BORREGO/A-ELC270 $G


Code Developed by: fmk