A J integral based method to measure fracture resistance and cohesive laws in materials exhibiting large scale plasticity

Bent F. Sørensen; Stergios Goutianos

A J integral based method to measure fracture resistance and cohesive laws in materials exhibiting large scale plasticity

Bent F. Sørensen
, Stergios Goutianos

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

A method is developed to extract the fracture resistance and mode I cohesive law of nonlinear elastic-plastic materials using a Double Cantilever Beam (DCB) sandwich specimen loaded with pure bending moments. The method is based on the J integral which is valid for materials having a non-linear stress-strain relationship as long as there is no unloading at any material point. A numerical parameter study is performed for a wide range of material and specimen parameters to examine the accuracy of the method. In the range examined, the error of the method is less than 11% and thus it can be used to measure the fracture resistance experimentally and determine the mode I cohesive law including its shape.

Original language	English
Title of host publication	Proceedings of the 16th European Conference on Composite Materials, ECCM 2014
Publication date	2014
Publication status	Published - 2014
Event	16th European Conference on Composite Materials - Seville, Spain Duration: 22 Jun 2014 → 26 Jun 2014 Conference number: 16 http://www.escm.eu.org/eccm16/index.html

Conference

Conference	16th European Conference on Composite Materials
Number	16
Country/Territory	Spain
City	Seville
Period	22/06/2014 → 26/06/2014
Internet address	http://www.escm.eu.org/eccm16/index.html

Keywords

Ceramics and Composites
Cohesive law
J integral
Non-linear material
Plasticity
Cantilever beams
Elastoplasticity
Fracture
Fracture toughness
Stress-strain curves
Unloading
Cohesive laws
Double cantilever beam sandwiches
Non-linear stress-strain
Nonlinear elastic plastics
Nonlinear materials
Numerical parameters
Numerical methods

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title = "A J integral based method to measure fracture resistance and cohesive laws in materials exhibiting large scale plasticity",

abstract = "A method is developed to extract the fracture resistance and mode I cohesive law of nonlinear elastic-plastic materials using a Double Cantilever Beam (DCB) sandwich specimen loaded with pure bending moments. The method is based on the J integral which is valid for materials having a non-linear stress-strain relationship as long as there is no unloading at any material point. A numerical parameter study is performed for a wide range of material and specimen parameters to examine the accuracy of the method. In the range examined, the error of the method is less than 11\% and thus it can be used to measure the fracture resistance experimentally and determine the mode I cohesive law including its shape.",

keywords = "Ceramics and Composites, Cohesive law, J integral, Non-linear material, Plasticity, Cantilever beams, Elastoplasticity, Fracture, Fracture toughness, Stress-strain curves, Unloading, Cohesive laws, Double cantilever beam sandwiches, Non-linear stress-strain, Nonlinear elastic plastics, Nonlinear materials, Numerical parameters, Numerical methods",

author = "S{\o}rensen, \{Bent F.\} and Stergios Goutianos",

year = "2014",

language = "English",

booktitle = "Proceedings of the 16th European Conference on Composite Materials, ECCM 2014",

note = "16th European Conference on Composite Materials, ECCM16 ; Conference date: 22-06-2014 Through 26-06-2014",

url = "http://www.escm.eu.org/eccm16/index.html",

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TY - GEN

T1 - A J integral based method to measure fracture resistance and cohesive laws in materials exhibiting large scale plasticity

AU - Sørensen, Bent F.

AU - Goutianos, Stergios

N1 - Conference code: 16

PY - 2014

Y1 - 2014

N2 - A method is developed to extract the fracture resistance and mode I cohesive law of nonlinear elastic-plastic materials using a Double Cantilever Beam (DCB) sandwich specimen loaded with pure bending moments. The method is based on the J integral which is valid for materials having a non-linear stress-strain relationship as long as there is no unloading at any material point. A numerical parameter study is performed for a wide range of material and specimen parameters to examine the accuracy of the method. In the range examined, the error of the method is less than 11% and thus it can be used to measure the fracture resistance experimentally and determine the mode I cohesive law including its shape.

AB - A method is developed to extract the fracture resistance and mode I cohesive law of nonlinear elastic-plastic materials using a Double Cantilever Beam (DCB) sandwich specimen loaded with pure bending moments. The method is based on the J integral which is valid for materials having a non-linear stress-strain relationship as long as there is no unloading at any material point. A numerical parameter study is performed for a wide range of material and specimen parameters to examine the accuracy of the method. In the range examined, the error of the method is less than 11% and thus it can be used to measure the fracture resistance experimentally and determine the mode I cohesive law including its shape.

KW - Ceramics and Composites

KW - Cohesive law

KW - J integral

KW - Non-linear material

KW - Plasticity

KW - Cantilever beams

KW - Elastoplasticity

KW - Fracture

KW - Fracture toughness

KW - Stress-strain curves

KW - Unloading

KW - Cohesive laws

KW - Double cantilever beam sandwiches

KW - Non-linear stress-strain

KW - Nonlinear elastic plastics

KW - Nonlinear materials

KW - Numerical parameters

KW - Numerical methods

M3 - Article in proceedings

BT - Proceedings of the 16th European Conference on Composite Materials, ECCM 2014

T2 - 16th European Conference on Composite Materials

Y2 - 22 June 2014 through 26 June 2014

ER -

A J integral based method to measure fracture resistance and cohesive laws in materials exhibiting large scale plasticity

Abstract

Conference

Keywords

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