This post is a work-in-progress…
Frequency Response Function based substructuring (FBS) predicts the dynamic behavior of a coupled system on the basis of free interface FRFs of the uncoupled components.
Here is a tutorial paper: Frequency Response Function Substructuring
Modal damping requires special consideration: Notes on Damping in FRF Substructuring
This script sets up the initial mass and stiffness matrices for the systems in the tutorial paper: spring_mass_series.m
See also:
Transfer Functions from Normal Modes
Joint Receptance for Rigid & Elastically Coupled Subsystems
Matlab script: joint_receptance.m
Reference Papers
K. Cuppens, P. Sas, L. Hermans, Evaluation of the FRF Based Substructuring and Modal Synthesis Technique Applied to Vehicle FE Data: Download
Dr. Peter Avitabile, Impedance Modeling & Frequency Based Substructuring: Download
Matthew S. Allen, Randall L. Mayes, Comparison of FRF and Modal Methods for Combining Experimental and Analytical Substructures: Download
Randy L. Mayes, Patrick S. Hunter, Todd W. Simmermacher, Matthew S. Allen , Combining Experimental and Analytical Substructures with Multiple Connections: Download
Mladen Gibanica, Experimental-Analytical Dynamic Substructuring, A State-Space Approach: Download
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