Dear friends,
I am trying to generate a substructure based on Craig-Bampton method. However, based on the results, abaqus still runs Guyan-Irons reduction although i select a set of retained modes. Here is my step procedure:
Step - Substructure generation
Evaluate recovery matrix for whole model -- Selected
Compute reduced mass matrix -- Selected
Retained eigen modes -- Selected
from 1 - 100 with a step of 1.
I run the analysis and create a new model, import the substructure and run an eigenvalue analysis. However, i get the exact same frequencies as if i had not chosen any retained eigenmodes (Guyan-Irons reduction).
Any ideas?
Best regards
