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 char...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2021-06-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/3104 |
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| _version_ | 1846145546845159424 |
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| author | Andrea Kusch Simone Salamina Daniele Crivelli Filippo Berto |
| author_facet | Andrea Kusch Simone Salamina Daniele Crivelli Filippo Berto |
| author_sort | Andrea Kusch |
| collection | DOAJ |
| 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 |
| id | doaj-art-955b0dafe620498092eb9191c9e8e3e4 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2021-06-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-955b0dafe620498092eb9191c9e8e3e42024-12-02T05:48:14ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932021-06-011557Strain Energy Density as Failure Criterion for Quasi-Static Uni-axial Tensile LoadingAndrea Kusch0Simone Salamina1Daniele Crivelli2Filippo Berto3University of Applied Sciences and Arts of Southern Switzerland, Lugano, SwitzerlandUniversity of Applied Sciences and Arts of Southern Switzerland, Lugano, SwitzerlandUniversity of Applied Sciences and Arts of Southern Switzerland, Lugano, SwitzerlandNorwegian University of Science and Technology, NorwayStrain 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.https://www.fracturae.com/index.php/fis/article/view/3104Strain energy densityQuasi-brittle materialPMMAFailure assessment |
| spellingShingle | Andrea Kusch Simone Salamina Daniele Crivelli Filippo Berto Strain Energy Density as Failure Criterion for Quasi-Static Uni-axial Tensile Loading Fracture and Structural Integrity Strain energy density Quasi-brittle material PMMA Failure assessment |
| title | 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_short | 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 |
| topic | Strain energy density Quasi-brittle material PMMA Failure assessment |
| url | https://www.fracturae.com/index.php/fis/article/view/3104 |
| work_keys_str_mv | AT andreakusch strainenergydensityasfailurecriterionforquasistaticuniaxialtensileloading AT simonesalamina strainenergydensityasfailurecriterionforquasistaticuniaxialtensileloading AT danielecrivelli strainenergydensityasfailurecriterionforquasistaticuniaxialtensileloading AT filippoberto strainenergydensityasfailurecriterionforquasistaticuniaxialtensileloading |