Two-dimensional dynamic simulation of fracture and fragmentation of solids

Ferenc Kun; Antonio D'Addetta; Hans J. Herrmann; Ekkehard Ramm

Ferenc Kun University of Stuttgart
Antonio D'Addetta University of Stuttgart
Hans J. Herrmann University of Stuttgart
Ekkehard Ramm University of Stuttgart

Abstract

We present a two-dimensional discrete model of solids that allows us to follow the behavior of the solid body and of the fragments well beyond the formation of simple cracks. The model, consisting of polygonal cells connected via beams, is an extension of discrete models used to study granular flows. This modeling is particularly suited for the simulation of fracture and fragmentation processes. After calculating the macroscopic elastic moduli from the cell and beam parameters, we present a detailed study of an uniaxial compression test of a rectangular block, and of the dynamic fragmentation processes of solids in various experimental situations. The model proved to be successful in reproducing the experimentally observed subtleties of fragmenting solids.

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References

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