This example problem demonstrates the use of acoustic elements coupled with structural elements to examine the performance of a speaker assembly.
The following features and capabilities are highlighted:
- Structural-acoustic coupling using fluid-structure interaction (FSI) in 3D 
- Use of a symmetric FSI algorithm 
- Use of perfectly matched layers (PML) to absorb outgoing acoustic waves 
- Postprocessing sound pressure level (SPL) and velocity 
- Far-field postprocessing of acoustic field 
- User-defined symmetric expansion options 
For more information about acoustic fluid-structure interaction, see Accounting for Acoustic Fluid-Structure Interaction (FSI) in the Acoustic Analysis Guide.