Open Access

ARTICLE

A Rate-Dependent Damage/Decohesion Model for Simulating Glass Fragmentation under Impact using the Material Point Method

LumingShen¹

1 School of Civil Engineering, University of Sydney, NSW 2006, Australia. Tel: +61-2-93512126; Fax: +61-2-93513343; Email: L.Shen@usyd.edu.au.

Computer Modeling in Engineering & Sciences 2009, 49(1), 23-46. https://doi.org/10.3970/cmes.2009.049.023

Abstract

A bifurcation-based simulation procedure is proposed in this paper to explore the transition from localization to decohesion involved in the glass fragmentation under impact loading. In the proposed procedure, the onset and orientation of discontinuous failure of glass is identified from the bifurcation analysis based on a rate-dependent tensile damage model. The material point method, which does not involve fixed mesh connectivity, is employed to accommodate the multi-scale discontinuities associated with the fragmentation of glass using a simple interface treatment. A parametric study has been conducted to demonstrate the effects of specimen size and impact velocity on the evolution of glass failure under impact loading. The preliminary results obtained in this numerical study provide a better understanding of the physics behind glass fragmentation under impact loading.

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