Strategies for handling Warnings in Abaqus
Strategies for handling Warnings in Abaqus
(OP)
Hello all,
I would like to ask some experienced engineers and abaqus users how they handle warnings during an analysis. I tend to get a few of them which ever analysis I run. Being quite new to abaqus I don't always understand the warnings. Any tips/advice on this?
Thanks
OptiEng
I would like to ask some experienced engineers and abaqus users how they handle warnings during an analysis. I tend to get a few of them which ever analysis I run. Being quite new to abaqus I don't always understand the warnings. Any tips/advice on this?
Thanks
OptiEng





RE: Strategies for handling Warnings in Abaqus
Calling tech support or posting here are probably your best bets.
The good news is once you develop the experience for your specific problem set is that you now have some serious job security.
Rob Stupplebeen
RE: Strategies for handling Warnings in Abaqus
For some warning messages, it must be due to my modelling techniques. I hope that with time I will become more accurate, effiecient and better at understanding the outputs.
I will keep working at it, keep checking out the abaqus manuals and if I still need input I will post.
Thanks again
OptiEng
RE: Strategies for handling Warnings in Abaqus
RE: Strategies for handling Warnings in Abaqus
I don't understand this warning. I have a 2-D plane disc and have applied a rotary Interia about the z axis. I have not stated the inertias about x and y. I assume this is why I obtained the warning? Do I need to state an inertia about the x and y?
(2) ***WARNING: FINITE ROTATION BOUNDARY CONDITION SPECIFIED IN MULTISTEP THREE-DIMENSIONAL ANALYSIS. TYPE=VELOCITY SHOULD BE USED
A applied a rotation of 6 radians of disc about the z axis (centre point of disc), is this saying I should have applied a velocity instead?
(3) ***WARNING: DEGREE OF FREEDOM 6 IS NOT ACTIVE ON NODE 1 INSTANCE DISC_1-1 - THIS BOUNDARY CONDITION IS IGNORED
I warning mesage for every node in my model? I can't seem to get rid of it?
(4) WARNING: Boundary conditons are specified on inactive of 2817 nodes. The nodes have been identified in node set WarnNodeBCInactiveDof.
Again I can't seem to aviod this warning message, but unsure why? Also, where can I find "node set WarnNodeBCInactiveDof"?
(5) WARNING: There are 2 unconnected regions in the model
I didn't want any connected regions in my model so I can ignore this one.
(6) WARNING: The system has 1 negative eigenvalue.
According to the abaqus manuals this is instabiliy of the model, which would be caused by buckling.
Any input into these warnings would be much appreciated.
Thanks
OptiEng.
RE: Strategies for handling Warnings in Abaqus
Thanks
RE: Strategies for handling Warnings in Abaqus
It's good to see you helping other people out.
Rob Stupplebeen
RE: Strategies for handling Warnings in Abaqus
I am really glad I can start to help others too, I guess it shows how positive and useful this engineering community.
I still havent spotted the option for finding specific nodes, but I will keep working on it. Thanks.
OptiEng
RE: Strategies for handling Warnings in Abaqus
Rob Stupplebeen