writeFieldReport for nodal force

Question:

Does anyone knows how to use writeFieldReport to export NFORC results into a text file?
Right now I am trying this for global nodal displacements:

session.writeFieldReport(fileName='DISPLACEMENT_OUT.rpt',
append=OFF,
sortItem='Node Label', 
odb=odb, 
step=last_step_number, 
frame=lastframe_number,
outputPosition=NODAL,
displayGroup= dg ,
variable=( ('U',NODAL), )
)

This will give me nodal displacement, I need to find element nodal forces using writeFieldReport.
PS: I already know how to use probe value to get “NFORCE”s I need to find a way to automate the post processing.

Thanks

Asked By: amirKabir

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Answers:

From the Analysis User’s Manual>Output>Nodal Variables, the variable identifier you are looking for is probably one of: TF, RF, or CF. Details on these output variables and how to request them from an analysis are available in the manual, if you need them.

Answered By: Matt P

how do you get lastframe_number and laststep_number ?

Thanks

Answered By: Adamas
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