The usage of fiber-reinforced composites in the aerospace industry hasincreased due to their high strength to weight ratio, corrosion prevention andfatigue resistance capabilities. One of the challenges in using composite materialslies in understanding the failure mechanisms which are considerably morecomplex than those in metals. In order to reduce the number of configurationsrequired for testing, we are looking at both traditional and innovative modelingtools. The peridynamics theory is a reformulation of the classical equations ofcontinuum mechanics based on integro-differential equations. The primaryadvantage of the peridynamic theory is that the same equations of motion with anintegral formulation of interior forces apply across any damage sites,discontinuities, or dislocations. At Boeing, a computational model based onperidynamic theory has been utilized for impact resistance and damage toleranceanalysis of composite structures, and has proved to be a promising method foraddressing analysis challenges. The simulation results are correlated with thescarcely available experimental data to guide the further experimental tests andanalyses. In this paper, the peridynamic model of composites is described and anoverview of some recent results is presented.
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