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Numerical singularity when processing node.

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Daniel Johansen

Civil/Environmental
Sep 12, 2017
1
Hey!

I am going to learn how to implement a user defined element in Abaqus by the use uf a user subroutine. I start easy by making a planar beam element with 3 degree of freedom in each node. When I have implemented the element in abaqus and when I run the job it gives me following warning:

SOLVER PROBLEM. NUMERICAL SINGULARITY WHEN PROCESSING NODE
PART-1-1.2 D.O.F. 2. THIS NODE HAS NO STIFFNESS IN THE SPECIFIED
DIRECTION AND IS NOT COUPLED WITH THE REST OF THE MODEL.

I have tried to find the mistake but I can not find the problem. I have attached the the .inp file

Kind regards
Daniel
 
 http://files.engineering.com/getfile.aspx?folder=13bfcac9-1bb7-49a6-bc71-428f3816a9b5&file=beam.inp
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