Numerical Method to simulate Vibrational Behaviour and resulting Sound Emission of Biological Systems

Nowadays, in the process of developing technical systems the main focus is on lightweight design, noise reduction and smooth and efficient operation. Many biological systems are dealing with similar issues and already present powerful solutions. Understanding the mechanisms and functionality of biological systems enables us to transfer and apply them to technical systems. The vibrational behaviour and the resulting sound emission of biological as well as technical systems depend on several aspects. We concentrate on the material and structure of the components, the damping mechanisms, the type of dissipation, the kind of surrounding media and whether the media is static or moving as well as the interaction between fluid and structure. Therefore, we combine different numerical methods and use experimental data for validation. The fluid flow is considered in the frequency domain, enabling us to consider sound propagation in a realistic framework while saving a significant amount of computation time compared to time domain formulations. Applying finite and infinite element method enables us to analyse the sound radiation in unbounded domains. Fluid and structure are coupled using the finite element method of fluid-structure interaction.Preliminary computational results are discussed and implications for future directions of research are addressed.