The Solid Mechanics Interface
Included in the Acoustics Module is an extended version of the Solid Mechanics interface shipped with COMSOL Multiphysics. The interface contain less features when compared to the full Solid Mechanics interface available with the Structural Mechanics Module.
The full documentation of all features in the full Solid Mechanics interface and the Piezoelectricity interface is found in the Structural Mechanics Module User’s Guide, specifically in these sections: