Abstract
Dynamic substructuring allows analysts to combine component structural dynamics models into system-level models. For purely structural systems, dynamic substructuring techniques are well established. Here, one such technique is adapted to solve the coupled response of elastic structures in contact with acoustic cavities. The inputs to the process are the component natural frequencies and the free-interface structural and acoustic modes. The approach is well suited for use with analytical, finite element and/or empirical component modes. Unlike alternative acoustic-structure interaction approaches, the present technique avoids the cumbersome calculation of coupling coefficients and can result in real-valued system natural frequencies and modes. The technique is applied to a simple acoustic-structure system and the results from the model are used to gain insight into acoustic-structure interaction phenomena that have been observed in test hardware.
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Davis, R.B., Schultz, R. (2018). Coupling Acoustic-Structure Systems Using Dynamic Substructuring. In: Linderholt, A., Allen, M., Mayes, R., Rixen, D. (eds) Dynamics of Coupled Structures, Volume 4. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-74654-8_15
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DOI: https://doi.org/10.1007/978-3-319-74654-8_15
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