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Title: The Thick Level-Set model for dynamic fragmentation

The Thick Level-Set (TLS) model is implemented to simulate brittle media undergoing dynamic fragmentation. This non-local model is discretized by the finite element method with damage represented as a continuous field over the domain. A level-set function defines the extent and severity of damage, and a length scale is introduced to limit the damage gradient. Numerical studies in one dimension demonstrate that the proposed method reproduces the rate-dependent energy dissipation and fragment length observations from analytical, numerical, and experimental approaches. In conclusion, additional studies emphasize the importance of appropriate bulk constitutive models and sufficient spatial resolution of the length scale.
Authors:
ORCiD logo [1] ;  [1] ; ORCiD logo [2]
  1. Duke Univ., Durham, NC (United States). Dept. of Civil and Environmental Engineering
  2. Ecole Centrale de Nantes, Nantes (France). Inst. de Recherche en Genie Civil et Mecanique
Publication Date:
Grant/Contract Number:
FG02-97ER25308; XLS291102
Type:
Accepted Manuscript
Journal Name:
Engineering Fracture Mechanics
Additional Journal Information:
Journal Volume: 172; Journal Issue: C; Journal ID: ISSN 0013-7944
Publisher:
Elsevier
Research Org:
Krell Institute, Ames, IA (United States)
Sponsoring Org:
USDOE; European Research Council (ERC)
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING; Dynamic fragmentation; Thick Level-Set; Gradient-limited damage model
OSTI Identifier:
1417265
Alternate Identifier(s):
OSTI ID: 1411815