This example computes the the vibration modes, eigenvalues, and frequencies for a circular drum or membrane. The membrane is modeled by the unit circle and assumed to be attached to a rigid frame. The Poisson PDE equation is used with the Eigenvalue solver to compute the solution.
This model is available as an automated tutorial by selecting Model Examples and Tutorials… > Classic PDE > Vibrations of a Circular Membrane from the File menu. Or alternatively, follow the video tutorial or step-by-step instructions linked below.