Simulation of wave propagation and impact damage in brittle materials using peridynamics

Abstract

In this paper we present the results of simulating wave propagation and impact damage in brittle materials, like ceramics, using peridynamics, a non-local generalization of continuum mechanics. Two different bond-based material models, the prototype microelastic material model and its improved version, were used to model aluminum oxynitride (ALON). To validate the simulations, the speed of the wave front is compared with measured data of the edge-on impact (EOI) experiment. The presented simulation results indicate that convergence is attained, however, a modeling error of 10% remains. Which indicates that simple bond-based peridynamics models may not be sufficient to achieve sufficient accuracy in these applications, but more sophisticated state-based peridynamics models must be employed.