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I'm new in Abaqus modeling and I facing some issues with it.
My goal :
I want to simulate the cruching of a sphere in an axisymmetric modeling. The height of the sphere must be divided by 2.
My Model :
Procopio_1_sphere.inp I'm using two rigid bodies to simulate the tools which crush the sphere.
For the sphere, I use a Procopio Meshing in order to get an accurate modelisation of the contact. The model is set with :
-> standard (not explicit)
-> static (not dynamic)
The step i use:
-> Nlgeom is activated
-> incrementation :
--->max number = 100 000
---------> initial = 1E-5
---------> Minimum = 1E-13
---------> Maximum = 0.001
-> Equation Solver :
---> Method : Direct
---> Matrix Shortage : Use solver default
-> Solution Technique: Full Newton
-> Convert sever discontinuity iteration : Propagate from previous state
-> Default load variation with time : Ramp lineary over step
Error message :
->Time increment required is less than the minimum specified
Abaqus/Standard Analysis exited with an error - Please see the message file for possible error messages if the file exists.
warning message :
->There is zero MOMENT everywhere in the model based on the default criterion. please check the value of the average MOMENT during the current iteration to verify that the MOMENT is small enough to be treated as zero. if not, please use the solution controls to reset the criterion for zero MOMENT.
->The strain increment has exceeded fifty times the strain to cause first yield at 9 points
Excessive distortion at a total of 1 integration points in solid (continuum) elements