I'm working with a Finite Element software and sometimes I get 'not convergence' error messages.. anybody can tell the reason(s) that can cause a calculation to diverge?
Thank you very much,
I think there are 2 reasons that your model doesn't converge...
1.your model is unstable! --> not enough supports?/too much deflection?
2.check your mesh quality! especially at high transition zones. Mesh distortion induces stress-singularity problem.
Good morning, Surachat..
Thanks as always for answering..
I make always a linear calculation before trying the non-linear analisys.. the linear works fine and I get a 2mm deflection only in 1.40m of element, so I guess this is not the problem..
Could be then that the mesh has distortions and works bad in non-linear and fine in linear?
Hugs from sunny Spain..