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Fracture mechanics studies of non-yielding materials like concrete : modelling of tensile fracture and applied strength analyses

Gustafsson, Per-Johan LU (1985) In Report TVBM 1007
Abstract
Fracture mechanics studies of non-yielding materials are presented. The studies are based on theoretical models for the macroscopical mechanical behaviour of materials during tensile stress induced fracture. A number of applied numercal analysis are indicated. Fracture models and strength relations are discussed also from a few more general and fundamental points of view. A number of comparisons are made to test results from literature.



The applications concern materials such as concrete, reinforced concrete, mortar and wood. Most numerical calculations are carried out by means of finite element methods. The fracture mechanics model called the fictìtious crack model is emphasized. This model gives a.description of... (More)
Fracture mechanics studies of non-yielding materials are presented. The studies are based on theoretical models for the macroscopical mechanical behaviour of materials during tensile stress induced fracture. A number of applied numercal analysis are indicated. Fracture models and strength relations are discussed also from a few more general and fundamental points of view. A number of comparisons are made to test results from literature.



The applications concern materials such as concrete, reinforced concrete, mortar and wood. Most numerical calculations are carried out by means of finite element methods. The fracture mechanics model called the fictìtious crack model is emphasized. This model gives a.description of gradual and localized

fracture-softening in a single discrete tensile fracture process region.



0ther models dealt with: linear elastic fracture mechanics, Weibull-model, un-limited plasticity, conventional maximum stress theory and a few more special models. Specimens dealt with during numerical calculations: beams in bending, fracture mechanics tests specimens, tensile test specimens, pipes in bending and crushing, specimens with a re-entrant corner and longitudinally reinforced concrete beams in shear.



According to the results obtained, it seems to be theoretically consistent and often of great practical importance to take into account the gradual and localized fracture-softening during strength analysis of specimens and structural elements. (Less)
Please use this url to cite or link to this publication:
author
opponent
  • Professor Elfgren, Lennart, Luleå tekniska universitet
organization
publishing date
type
Thesis
publication status
published
subject
keywords
cracking, corners, test-specimens, strength, tension, fracture mechanics, strain localization, size-effect, flexural strength, LEFM, fictitious crack model, Weibull, FEM, pipes, shear strength, concrete, diagonal tension
in
Report TVBM 1007
pages
422 pages
publisher
Division of Building Materials, LTH, Lund University
defense location
Sektionen för väg- och vattenbyggnad, John Ericssons väg 1, hörsal V:A
defense date
1985-12-10 13:15
external identifiers
  • other:TVBM-1007
ISSN
0348-7911
language
English
LU publication?
yes
id
37ef48d7-e415-43b7-9c7c-a4b103800454 (old id 1272931)
date added to LUP
2008-12-05 13:22:25
date last changed
2016-09-19 08:44:58
@phdthesis{37ef48d7-e415-43b7-9c7c-a4b103800454,
  abstract     = {Fracture mechanics studies of non-yielding materials are presented. The studies are based on theoretical models for the macroscopical mechanical behaviour of materials during tensile stress induced fracture. A number of applied numercal analysis are indicated. Fracture models and strength relations are discussed also from a few more general and fundamental points of view. A number of comparisons are made to test results from literature.<br/><br>
<br/><br>
The applications concern materials such as concrete, reinforced concrete, mortar and wood. Most numerical calculations are carried out by means of finite element methods. The fracture mechanics model called the fictìtious crack model is emphasized. This model gives a.description of gradual and localized <br/><br>
fracture-softening in a single discrete tensile fracture process region.<br/><br>
<br/><br>
0ther models dealt with: linear elastic fracture mechanics, Weibull-model, un-limited plasticity, conventional maximum stress theory and a few more special models. Specimens dealt with during numerical calculations: beams in bending, fracture mechanics tests specimens, tensile test specimens, pipes in bending and crushing, specimens with a re-entrant corner and longitudinally reinforced concrete beams in shear.<br/><br>
<br/><br>
According to the results obtained, it seems to be theoretically consistent and often of great practical importance to take into account the gradual and localized fracture-softening during strength analysis of specimens and structural elements.},
  author       = {Gustafsson, Per-Johan},
  issn         = {0348-7911},
  keyword      = {cracking,corners,test-specimens,strength,tension,fracture mechanics,strain localization,size-effect,flexural strength,LEFM,fictitious crack model,Weibull,FEM,pipes,shear strength,concrete,diagonal tension},
  language     = {eng},
  pages        = {422},
  publisher    = {Division of Building Materials, LTH, Lund University},
  school       = {Lund University},
  series       = {Report TVBM 1007},
  title        = {Fracture mechanics studies of non-yielding materials like concrete : modelling of tensile fracture and applied strength analyses},
  year         = {1985},
}