Strain Energy Density as Failure Criterion for Quasi-Static Uni-axial Tensile Loading

Strain energy density is successfully used as criterion for failure assessment of brittle and quasi-brittle material behavior. This work investigates the possibility to use this method to predict the strength of V-notched specimens made of PMMA under static uniaxial tensile load. Samples are cha...

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Autores principales:	Andrea Kusch, Simone Salamina, Daniele Crivelli, Filippo Berto
Formato:	article
Lenguaje:	EN
Publicado:	Gruppo Italiano Frattura 2021
Materias:	Strain energy density Quasi-brittle material PMMA Failure assessment Mechanical engineering and machinery TJ1-1570 Structural engineering (General) TA630-695
Acceso en línea:	https://doaj.org/article/955b0dafe620498092eb9191c9e8e3e4
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id	oai:doaj.org-article:955b0dafe620498092eb9191c9e8e3e4
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spelling	oai:doaj.org-article:955b0dafe620498092eb9191c9e8e3e42021-11-26T10:55:58ZStrain Energy Density as Failure Criterion for Quasi-Static Uni-axial Tensile Loading1971-8993https://doaj.org/article/955b0dafe620498092eb9191c9e8e3e42021-06-01T00:00:00Zhttps://www.fracturae.com/index.php/fis/article/view/3104https://doaj.org/toc/1971-8993 Strain energy density is successfully used as criterion for failure assessment of brittle and quasi-brittle material behavior. This work investigates the possibility to use this method to predict the strength of V-notched specimens made of PMMA under static uniaxial tensile load. Samples are characterized by a variability of notch root radii and notch opening angles. Notched specimens fail with a quasi-brittle behavior, albeit PMMA has a nonlinear stress strain curve at room temperature. The notch root radius has most influence on the strength of the specimen, whereas the angle is less relevant. The value of the strain energy density is computed by means of finite element analysis, the material is considered as linear elastic. Failure prediction, based on the critical value of the strain energy density in a well-defined volume surrounding the notch tip, show very good agreement (error <15%) with experimental data. Andrea KuschSimone SalaminaDaniele CrivelliFilippo BertoGruppo Italiano FratturaarticleStrain energy densityQuasi-brittle materialPMMAFailure assessmentMechanical engineering and machineryTJ1-1570Structural engineering (General)TA630-695ENFrattura ed Integrità Strutturale, Vol 15, Iss 57 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Strain energy density Quasi-brittle material PMMA Failure assessment Mechanical engineering and machinery TJ1-1570 Structural engineering (General) TA630-695
spellingShingle	Strain energy density Quasi-brittle material PMMA Failure assessment Mechanical engineering and machinery TJ1-1570 Structural engineering (General) TA630-695 Andrea Kusch Simone Salamina Daniele Crivelli Filippo Berto Strain Energy Density as Failure Criterion for Quasi-Static Uni-axial Tensile Loading
description	Strain energy density is successfully used as criterion for failure assessment of brittle and quasi-brittle material behavior. This work investigates the possibility to use this method to predict the strength of V-notched specimens made of PMMA under static uniaxial tensile load. Samples are characterized by a variability of notch root radii and notch opening angles. Notched specimens fail with a quasi-brittle behavior, albeit PMMA has a nonlinear stress strain curve at room temperature. The notch root radius has most influence on the strength of the specimen, whereas the angle is less relevant. The value of the strain energy density is computed by means of finite element analysis, the material is considered as linear elastic. Failure prediction, based on the critical value of the strain energy density in a well-defined volume surrounding the notch tip, show very good agreement (error <15%) with experimental data.
format	article
author	Andrea Kusch Simone Salamina Daniele Crivelli Filippo Berto
author_facet	Andrea Kusch Simone Salamina Daniele Crivelli Filippo Berto
author_sort	Andrea Kusch
title	Strain Energy Density as Failure Criterion for Quasi-Static Uni-axial Tensile Loading
title_short	Strain Energy Density as Failure Criterion for Quasi-Static Uni-axial Tensile Loading
title_full	Strain Energy Density as Failure Criterion for Quasi-Static Uni-axial Tensile Loading
title_fullStr	Strain Energy Density as Failure Criterion for Quasi-Static Uni-axial Tensile Loading
title_full_unstemmed	Strain Energy Density as Failure Criterion for Quasi-Static Uni-axial Tensile Loading
title_sort	strain energy density as failure criterion for quasi-static uni-axial tensile loading
publisher	Gruppo Italiano Frattura
publishDate	2021
url	https://doaj.org/article/955b0dafe620498092eb9191c9e8e3e4
work_keys_str_mv	AT andreakusch strainenergydensityasfailurecriterionforquasistaticuniaxialtensileloading AT simonesalamina strainenergydensityasfailurecriterionforquasistaticuniaxialtensileloading AT danielecrivelli strainenergydensityasfailurecriterionforquasistaticuniaxialtensileloading AT filippoberto strainenergydensityasfailurecriterionforquasistaticuniaxialtensileloading
_version_	1718409607252017152

Strain Energy Density as Failure Criterion for Quasi-Static Uni-axial Tensile Loading

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