The Truss-Like Discrete Element Method Applied in Circular Tin Plate Submitted to Impact Excitation

R. BARRIOS D'AMBRA; L. KOSTESKI; I. ITURRIOZ; A. P. CISILINO; L. FASCE; P. M. FRONTINI; V. PETTARIN

París

Congreso; IV European Conference on Computational Mechanics; 2010

European Community on Computational Methods in Applied Sciences

The present work is devoted to the modeling of the falling weight impact test of circular thin polymer plates according to standard ASTM D3763–001 [2] by means of the truss-like discrete element method. The DEM is based on the representation of a solid by means of an arrangement of unidimensional elements that are able to carry axial loads only. Following Riera and Rocha [3] the DEM formulation is extended to account for the fragile fracture by means of a bilinear constitutive law with damage. In this way, the model can capture the irreversible effects of crack nucleation and propagation. The discrete equation of motion resulting from the spatial and space discretizations is solved in the time domain using an explicit integration scheme. The DEM was implemented within the finite element software ABAQUS 6.9-1. In this way the DEM model was combined with other capabilities available in ABAQUS like the contact algorithm.