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Frank Richter's picture

Besides the ABAQUS mailing list
https://groups.yahoo.com/neo/groups/Abaqus/info
you can try 
http://www.eng-tips.com/threadminder.cfm?pid=799
or the ResearchGate discussion forum.

Get the file
http://imechanica.org/files/Writing User Subroutines with ABAQUS.pdf

Good luck

Frank

Thank you, professor. Apparently, the problem was pretty straightforward pertaining to the use of wrong variable names. 

The plot that you have given indicates one or both of the following:

1) The initial elastic moduli are different for your implementation vs the built-in model

2) The strain rates are different for the two models (your implementation uses a larger strain rate)

One way to check the values is to plug-in value of plastic strain, strain rate, and temperature and to calculate what the expected yield stress is from either model.

-- Biswajit

Thank you, professor, for your help. Apparently, the problem was pretty straightforward pertaining to the use of wrong variable names. 

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