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Doctoral thesis: On the Role of Process Regions at Stationary and Growing Cracks.

Ståhle, P. LU (1985)
Abstract
Studies of crack behaviour and fracture are generally performed using continuum analysis. Thus, the process region is either not considered at all or assumed to be point-sized. In the latter case it is often ascribed a desired property, usually the ability to consume energy.
A major step towards the understanding of the fracture process region the concept of autonomy of the near tip field was introduced by Barenblatt in 1962. He also introduced a cohesive modulus as a description of the material behaviour in the crack tip vicinity. This implies again that process region should be small in some sense. In an elastic surrounding smallness of the process region must be related to a significant geometrical length, usually the crack length.... (More)
Studies of crack behaviour and fracture are generally performed using continuum analysis. Thus, the process region is either not considered at all or assumed to be point-sized. In the latter case it is often ascribed a desired property, usually the ability to consume energy.
A major step towards the understanding of the fracture process region the concept of autonomy of the near tip field was introduced by Barenblatt in 1962. He also introduced a cohesive modulus as a description of the material behaviour in the crack tip vicinity. This implies again that process region should be small in some sense. In an elastic surrounding smallness of the process region must be related to a significant geometrical length, usually the crack length. Which introduces the question about what happens in the case the crack is of similar size or even small compared with the linear extent of the fracture process region. The present thesis brings some light into this. (Less)
Please use this url to cite or link to this publication:
author
supervisor
organization
publishing date
type
Thesis
publication status
published
subject
pages
8 pages
publisher
Lund University
language
English
LU publication?
yes
additional info
M1 - TFHF-1006 (1985) VL - Doctoral Thesis
id
243b5865-f741-414d-9375-ba105661e02c
date added to LUP
2019-06-17 14:41:40
date last changed
2025-04-04 14:22:03
@phdthesis{243b5865-f741-414d-9375-ba105661e02c,
  abstract     = {{Studies of crack behaviour and fracture are generally performed using continuum analysis. Thus, the process region is either not considered at all or assumed to be point-sized. In the latter case it is often ascribed a desired property, usually the ability to consume energy.<br/>A major step towards the understanding of the fracture process region the concept of autonomy of the near tip field was introduced by Barenblatt in 1962. He also introduced a cohesive modulus as a description of the material behaviour in the crack tip vicinity. This implies again that process region should be small in some sense. In an elastic surrounding smallness of the process region must be related to a significant geometrical length, usually the crack length. Which introduces the question about what happens in the case the crack is of similar size or even small compared with the linear extent of the fracture process region. The present thesis brings some light into this.}},
  author       = {{Ståhle, P.}},
  language     = {{eng}},
  publisher    = {{Lund University}},
  school       = {{Lund University}},
  title        = {{Doctoral thesis: On the Role of Process Regions at Stationary and Growing Cracks.}},
  url          = {{https://lup.lub.lu.se/search/files/66638956/on_the_role_of_process.pdf}},
  year         = {{1985}},
}