HI
I've read your descriptions.
I understand your difficulty because I've met often aborts.
But don't worry. there must be a reason.
I can help you.
I've workedin 12yrs by using Abaqus and solved so much problems.
plz, contact with me and consult about your issue.
My version is 6.14.
if your version is higher than mine, you can share me inp file.
then I'll check .
Best regards.