首页|Chipping Brittle Materials: A Finite Element Analysis
Chipping Brittle Materials: A Finite Element Analysis
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Trans Tech Publications Ltd
Edge chipping by an indenter has been used to investigate the fragmentation of brittle materials. This paper proposed a constitutive model for studying both the initiation and propagation of cracks during the chipping of concrete. The analysis was carried out by the finite element method using a commercially available code, LS-DYNA. The results showed that a zone with very high compressive stresses appears beneath the indenter and causes the material to break or crush. Most of the external work, about 78%, was dissipated in the crushing zone while only a small percentage (less than 17%) contributed to form chips/fragments. As the indentation proceeded, radian-median cracks initiated and propagated downward and parallel to the front surface of the material to form a half penny crack. The crack tips from both sides of the indenter on the surface would then deviate toward the free edge, leading to a chipping scallop at a critical load.
edge chippingbrittle materialdamage modeling
Seyed Saleh Mostafavi、L.C. Zhang、Jason Lunn
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School of Mechanical and Manufacturing Engineering,The University of New South Wales, NSW 2052, Australia
Bradken, 2 Maud Street, Mayfield West, NSW, 2052, Australia
NETL
NSTL
Trans Tech Publications Ltd
