Abaqus python scripting, booleanmerge section assignment

Hey,

 I am writing a python script for modeling aggregates in a concrete cylinder. I have created a all the particles and and specified section properties to them and to the  cylinder.

The procedure I am using is to merge the particles and the cylinder while retaining the boundaries. If the sctions are assigned to the parts before merging, the result is the cylinder with the specified section assignmentsfor each part.

I wrote the code in python but seems like it does not include the section assignment to the new part from merge.

Here is my code for merge:

mdb.models['Model-1'].rootAssembly.InstanceFromBooleanMerge(domain=GEOMETRY,
    instances=(sphereInstancesList),keepIntersections=ON, name='Part-RVE', originalInstances=SUPPRESS)

Can someone help me what is wrong with this code and how can i include section assignments in the new part please?

Regards

Sina Khodaie

Graduate Student

University of South Carolina