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Plastic Mechanisms During Fast Brittle Fracture

Nilsson, Per ; Sundin, K.G. and Ståhle, P. LU (1995) Joint ASME/JSME Pressure Vessels and Piping Conference p.69-72
Abstract
Small ligaments connecting the fracture surfaces just behind a moving crack front are assumed to exist under certain conditions. The ligaments are rapidly torn as the crack advances. Inelastic straining of such ligaments influences the energy balance in the fracture process. The rapid tearing of a single ligament is studied both numerically and experimentally. An elastic visco-plastic material model is adopted for finite-element calculations. The results show that relatively large amounts of energy are dissipated during the tearing process. Further, the energy needed to tear a ligament increases rapidly with increasing tearing rate. The computed behavior is partly verified in a few preliminary experiments. The implications for slow stable... (More)
Small ligaments connecting the fracture surfaces just behind a moving crack front are assumed to exist under certain conditions. The ligaments are rapidly torn as the crack advances. Inelastic straining of such ligaments influences the energy balance in the fracture process. The rapid tearing of a single ligament is studied both numerically and experimentally. An elastic visco-plastic material model is adopted for finite-element calculations. The results show that relatively large amounts of energy are dissipated during the tearing process. Further, the energy needed to tear a ligament increases rapidly with increasing tearing rate. The computed behavior is partly verified in a few preliminary experiments. The implications for slow stable crack tip speeds during dynamic fracture are discussed. (C) 1998 Elsevier Science S.A. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
; and
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Dynamic fracture failure, and deformation : presented at the 1995 Joint ASME/JSME Pressure Vessels and Piping Conference, Honolulu, Hawaii, July 23-27 1995 - presented at the 1995 Joint ASME/JSME Pressure Vessels and Piping Conference, Honolulu, Hawaii, July 23-27 1995
editor
Nishioka, T. and Epstein, J. S.
pages
69 - 72
publisher
American Society Of Mechanical Engineers (ASME)
conference name
Joint ASME/JSME Pressure Vessels and Piping Conference
conference location
Honolulu, United States
conference dates
1995-07-23 - 1995-07-27
external identifiers
  • scopus:0029422786
ISBN
0791813312
language
English
LU publication?
no
id
6625bc89-8f13-4af4-a198-b1e59e82ce23
date added to LUP
2019-06-26 10:05:18
date last changed
2021-03-29 18:15:16
@inproceedings{6625bc89-8f13-4af4-a198-b1e59e82ce23,
  abstract     = {{Small ligaments connecting the fracture surfaces just behind a moving crack front are assumed to exist under certain conditions. The ligaments are rapidly torn as the crack advances. Inelastic straining of such ligaments influences the energy balance in the fracture process. The rapid tearing of a single ligament is studied both numerically and experimentally. An elastic visco-plastic material model is adopted for finite-element calculations. The results show that relatively large amounts of energy are dissipated during the tearing process. Further, the energy needed to tear a ligament increases rapidly with increasing tearing rate. The computed behavior is partly verified in a few preliminary experiments. The implications for slow stable crack tip speeds during dynamic fracture are discussed. (C) 1998 Elsevier Science S.A. All rights reserved.}},
  author       = {{Nilsson, Per and Sundin, K.G. and Ståhle, P.}},
  booktitle    = {{Dynamic fracture failure, and deformation : presented at the 1995 Joint ASME/JSME Pressure Vessels and Piping Conference, Honolulu, Hawaii, July 23-27 1995}},
  editor       = {{Nishioka, T. and Epstein, J. S.}},
  isbn         = {{0791813312}},
  language     = {{eng}},
  pages        = {{69--72}},
  publisher    = {{American Society Of Mechanical Engineers (ASME)}},
  title        = {{Plastic Mechanisms During Fast Brittle Fracture}},
  year         = {{1995}},
}