In the real case the frame and the stator are pressed adjusted and practically they are fixed together. One way to generate such assembly between the frame and the stator is to generate common nodes on the contact surface (inner surface of the frame and outer surface of the stator). This possibility is very expansive from both generating and processing processes. Thus it was considered an easiest model considering common nodes on longitudinal lines situated at constant angles. So, the two parts, frame and stator, were partitioned at each 30° and were defined the same number of nodes on parts. In such way it could be obtained an assembly very closed to the real one (see Fig.1,b).
The next two solid parts of the model were the fore and back cases. They have two different connections with the assembly: one through the bearings and the other one directly with the frame (see Fig.1,c and d).