next up previous contents
Next: Acoustic Half-space Conditions Up: Boundary and Interface Previous: Perfectly Free Boundary

Perfectly Rigid Boundary (Neumann BC)

The perfectly rigid assumption enjoys some popularity for a bottom boundary. For a purely acoustic problem, this becomes,

For an elastic medium, this implies that both displacements must vanish,

Thus, two linearly independent solutions can be obtained using,

From the definitions of y in Eq. (gif) we obtain the following boundary conditions,

Michael B. Porter
Tue Oct 28 13:27:38 PST 1997