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Abaqus Error - displacement increment for contact is too big

Abaqus Error - displacement increment for contact is too big

Abaqus Error - displacement increment for contact is too big

(OP)
Hi,
I am working on a model which consists of 2 concrete slabs connected with 15 steel bars (dowels). Earlier i had connected a simpler model which worked perfectly. However this model gives a bunch of errors.

1) ***WARNING: THERE ARE 9 UNCONNECTED REGIONS IN THE MODEL.

I went back and forth to check if i have left any unconnected parts. However i could not find any.

2)  ***WARNING: SOLVER PROBLEM. NUMERICAL SINGULARITY WHEN PROCESSING NODE DOWEL-13.229 D.O.F. 2 RATIO = 116.865E+12

I want the dowels to displace in 2(Y)-direction. Hence i have not constrained them in that direction. However the warning persists.

3)  ***WARNING: DISPLACEMENT INCREMENT FOR CONTACT IS TOO BIG.

I have no idea how to correct this error message.

Please HELP.

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