I have a cubical RVE and I want to cut multiple ellipsoidal holes in it. I have a python script for this but when I run the script in Abaqus it gives an error "Cutting operation failed because the base instance was not modified". Here is a piece of code I have used:
for i in range(len(ellipse)):
a.InstanceFromBooleanCut(name='Part-1',
instanceToBeCut=mdb.models['Model LM'].rootAssembly.instances['RVEInstance'],
cuttingInstances=(a.instances['LM_ellipsoid-'+str(i)],), originalInstances=SUPPRESS )
This performs the first cut but fails after the first one. Could someone please suggest how I can fix this?
I think the problem is that the length scale is too small. So I suggest you to change the length unit to a smaller one.
Dear Abhijith, at the first glance the problem might be from this line :
cuttingInstances=(a.instances['LM_ellipsoid-'+str(i)],), originalInstances=SUPPRESS )
The state " +str(i) " means that you change the name of the instance, as loop goes further the number of instance change to "LM_ellipsoid_2 , 3 " and so on ... But your instance name is "LM_ellipsoid_1" and you want to cut an instance with another name that doesn't exist. Because you don't create a new instance in every iteration ...
Hope helped - best regards
hey can you please help to generate random spheres in a unit volume using RVE ?
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