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Published in:
2018 | OriginalPaper | Chapter
16. Dynamic Substructuring Applied to the Decoupling of Acoustic-Structure Systems
Authors : Ryan Schultz, R. Benjamin Davis
Published in: Dynamics of Coupled Structures, Volume 4
Publisher: Springer International Publishing
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Abstract
Dynamic substructuring allows analysts to combine component structural dynamics models into a system-level model. An analogous process can be used to subtract off a component model from the system model. Here, this decoupling approach is adapted for use with acoustic-structure systems. This has applications to model validation where structural models are correlated to test data. When acoustic cavities are present, coupling with the acoustic subsystem can confound the test response and inhibit the model validation effort. Here, the Transmission Simulator method of Component Mode Synthesis is applied to extract the structure-only response from a coupled structural-acoustic system using the acoustic cavity modes as the subtracted component. This approach is demonstrated on a simple plate-box system using component modes from analytical and numerical models.