Vibroacoustic simulation is the discipline of modelling and predicting the acoustics of technical systems.
What is so special about this topic that there is even a special word for this subject: Vibroacoustics ?
First, the behaviour of structures and fluids is very different, second, the wave motion of structures itself is very diverse and third, the range of wavelengths may vary over five orders of magnitude when the full audible frequency range and all components of a technical system are considered.
When the linear measures of the subsystems are in the same scale as the wavelength the subsystem is called deterministic, because small changes will only lead to small variations in the system response.
If the wavelength is much smaller than the subsystem dimensions, small changes will strongly impact the system response. In this case the subsystem is called random.
Due to this fact different methods for the simulation and description of such subsystems must be applied: For example the finite element method (FEM) for deterministic systems and the statistical energy analysis (SEA) for random subsystems.
In addition, both kind of subsystem can occur simultaneously in one global system. In this case the combination of both methods is required, the hybrid FEM/SEA method.
This is why vibroacoustics is a complex engineering discipline or science because the engineer has master all these different, appropriate methods.
The aim of the book Vibroacoustic Simulation and the accompanying software pyva is to guide you through the challenges of this discipline. pyva.eu