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A perfectly matched layer
(PML) absorbing boundary is formulated for and numerically applied to
peridynamics in two dimensions. Peridynamics is a nonlocal method, derived to be
insensitive to discontinuities, more easily simulating fracture. A PML is an
absorbing boundary layer, which decays impinging waves exponentially without
introducing reflections at the boundary between the computational region and the
absorbing layer. Here, we use state-based peridynamics as PMLs are essentially
anisotropic absorbing materials, therefore requiring arbitrary material parameters.
State-based peridynamics is also more convenient for auxiliary field formulations,
facilitating the implementation of the PML. Results show the efficacy of the
approach.