Node Recorder

[SINHA]

Hello,
I'm trying to record acceleration, velocity, and displacement data for nodes. what value will be recorded for acceleration, velocity and displacement if ground motion is applied by 'UniformExcitation' command ??

what I mean is, will the values be the relative values or absolute values ??

Thanks.

[selimgunay]

All three are relative. If you need the absolute accelerations, you need to add TimeSeries as in the example below

recorder Node -file absacc.out -timeSeries 1 -time -node 4 -dof 1 accel

Here the time series with tag 1 is the one that is applied in the global X direction as the recorded accelerations are those that correspond to dof 1.

[SINHA]

Thank you..