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Abaqus problem with Small Punch Test

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Old   July 14, 2022, 06:54
Unhappy Abaqus problem with Small Punch Test
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Hi guys,

Im recreating a Small Punch Test as follows:


https://ibb.co/bW72DMF


Im then adding an UMAT subroutine and comparing to lab test results in order to evaluate the size effect (strain gradient plasticity) of different specimens through force-displacement plots. The abaqus model has been a complete succes when setting speciments of thickness 0.5 mm, 0.4 mm and 0.3 mm but when trying to fit specimens any lower than that it will crash. For 0.2 mm the software will do some increments and then exit with error, for 0.1 mm or lower it wont even start calculations.

Do you guys have any suggestions on how to fix this?
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