Finite element model for brittle fracture and fragmentation

Li, Wei; Delaney, Tristan J.; Jiao, Xiangmin; Samulyak, Roman; Lu, Cao

doi:10.1016/j.procs.2016.05.317

Finite element model for brittle fracture and fragmentation

Journal Article · Wed Jun 01 04:00:00 EDT 2016 · Procedia Computer Science

DOI:https://doi.org/10.1016/j.procs.2016.05.317· OSTI ID:1324261

Li, Wei ^[1]; Delaney, Tristan J. ^[1]; Jiao, Xiangmin ^[1]; Samulyak, Roman ^[2]; Lu, Cao ^[1]

Stony Brook Univ., Stony Brook, NY (United States)
Stony Brook Univ., Stony Brook, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)

A new computational model for brittle fracture and fragmentation has been developed based on finite element analysis of non-linear elasticity equations. The proposed model propagates the cracks by splitting the mesh nodes alongside the most over-strained edges based on the principal direction of strain tensor. To prevent elements from overlapping and folding under large deformations, robust geometrical constraints using the method of Lagrange multipliers have been incorporated. In conclusion, the model has been applied to 2D simulations of the formation and propagation of cracks in brittle materials, and the fracture and fragmentation of stretched and compressed materials.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Advanced Scientific Computing Research (SC-21)

OSTI ID:: 1324261

Report Number(s):: BNL--112403-2016-JA

Journal Information:: Procedia Computer Science, Journal Name: Procedia Computer Science Journal Issue: C Vol. 80; ISSN 1877-0509

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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97 MATHEMATICS AND COMPUTING
brittle fracture
collision detection
finite elements method
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nonlinear elasticity

Finite element model for brittle fracture and fragmentation

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