Modeling of mechanical behavior of cork in compression
The present work consists of a contribution in modeling the mechanical behavior of cork in compression. For this purpose, compression tests are performed in the non-radial direction on high density reproduction cork samples. Cork shows stress-strain curves, typical of cellular materials, characteriz...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2020-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2820/3057 |
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| author | Youns Saadallah |
| author_facet | Youns Saadallah |
| author_sort | Youns Saadallah |
| collection | DOAJ |
| description | The present work consists of a contribution in modeling the mechanical behavior of cork in compression. For this purpose, compression tests are performed in the non-radial direction on high density reproduction cork samples. Cork shows stress-strain curves, typical of cellular materials, characterized by an elastic slope followed by an important plateau corresponding to buckling of cells; and finally hardening due to the densification of the material. Two behavior models are proposed to represent this behavior. A trilinear model in which each slope represents one of the three domains and whose parameters are identified directly from the stress-strain curves. A more nonlinear model corresponding to a third-order polynomial whose parameters are identified by means of a polynomial regression. Test-model comparisons reveal little relevance of the results given by the trilinear model whereas a very good consistency is observed for the results given by the nonlinear model. |
| format | Article |
| id | doaj-art-f4cb6a6bd2e9428aa6b1665f79d6fe15 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2020-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-f4cb6a6bd2e9428aa6b1665f79d6fe152025-02-03T10:29:21ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932020-07-01145341742510.3221/IGF-ESIS.53.3210.3221/IGF-ESIS.53.32Modeling of mechanical behavior of cork in compressionYouns SaadallahThe present work consists of a contribution in modeling the mechanical behavior of cork in compression. For this purpose, compression tests are performed in the non-radial direction on high density reproduction cork samples. Cork shows stress-strain curves, typical of cellular materials, characterized by an elastic slope followed by an important plateau corresponding to buckling of cells; and finally hardening due to the densification of the material. Two behavior models are proposed to represent this behavior. A trilinear model in which each slope represents one of the three domains and whose parameters are identified directly from the stress-strain curves. A more nonlinear model corresponding to a third-order polynomial whose parameters are identified by means of a polynomial regression. Test-model comparisons reveal little relevance of the results given by the trilinear model whereas a very good consistency is observed for the results given by the nonlinear model.https://www.fracturae.com/index.php/fis/article/view/2820/3057corkcompressionbehavior modelparameters identificationstress-strain |
| spellingShingle | Youns Saadallah Modeling of mechanical behavior of cork in compression Fracture and Structural Integrity cork compression behavior model parameters identification stress-strain |
| title | Modeling of mechanical behavior of cork in compression |
| title_full | Modeling of mechanical behavior of cork in compression |
| title_fullStr | Modeling of mechanical behavior of cork in compression |
| title_full_unstemmed | Modeling of mechanical behavior of cork in compression |
| title_short | Modeling of mechanical behavior of cork in compression |
| title_sort | modeling of mechanical behavior of cork in compression |
| topic | cork compression behavior model parameters identification stress-strain |
| url | https://www.fracturae.com/index.php/fis/article/view/2820/3057 |
| work_keys_str_mv | AT younssaadallah modelingofmechanicalbehaviorofcorkincompression |