The generalized finite difference method (GFDM) has been proved to be a good procedure to solve the problem of
wave propagation. As other numerical methods, when using a finite model to study an unbounded domain, a way of avoiding
wave reflection at the boundaries is needed. Perfectly Matched
Layers (PML) absorbing
boundary conditions are commonly used.
This paper aims to obtain a Perfectly Matched Layer formulation for the GFDM, for which the stability is guaranteed.