Response of porous SMA: a micromechanical study
Lately porous shape memory alloys (SMA) have attracted great interest as low weight materials characterized by high energy dissipation capability. In the present contribution a micromechanical study of porous SMA is proposed, introducing the simplifying hypothesis of periodic distribution of voids....
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2014-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1241 |
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| author | V. Sepe S. Marfia F. Auricchio |
| author_facet | V. Sepe S. Marfia F. Auricchio |
| author_sort | V. Sepe |
| collection | DOAJ |
| description | Lately porous shape memory alloys (SMA) have attracted great interest as low weight materials characterized by high energy dissipation capability. In the present contribution a micromechanical study of porous SMA is proposed, introducing the simplifying hypothesis of periodic distribution of voids. The mechanical response of the heterogeneous porous medium is derived by performing nonlinear finite element micromechanical analyses considering a typical repetitive unit cell made of a circular hole in a dense SMA matrix and prescribing suitable periodicity and continuity conditions. The constitutive behavior and the dissipation energy capability of the porous Nitinol are examined for several porosity levels. Numerical applications are performed in order to test the ability of the proposed procedure to well capture the overall behavior and the key features of the special heterogeneous material. |
| format | Article |
| id | doaj-art-c92ee5abf8ff45f8b5b39ab721651e33 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2014-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-c92ee5abf8ff45f8b5b39ab721651e332025-01-02T23:01:27ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932014-07-01829Response of porous SMA: a micromechanical studyV. Sepe0S. Marfia1F. Auricchio2University of Cassino and Southern LazioUniversity of Cassino and Southern LazioUniversity of PaviaLately porous shape memory alloys (SMA) have attracted great interest as low weight materials characterized by high energy dissipation capability. In the present contribution a micromechanical study of porous SMA is proposed, introducing the simplifying hypothesis of periodic distribution of voids. The mechanical response of the heterogeneous porous medium is derived by performing nonlinear finite element micromechanical analyses considering a typical repetitive unit cell made of a circular hole in a dense SMA matrix and prescribing suitable periodicity and continuity conditions. The constitutive behavior and the dissipation energy capability of the porous Nitinol are examined for several porosity levels. Numerical applications are performed in order to test the ability of the proposed procedure to well capture the overall behavior and the key features of the special heterogeneous material.https://www.fracturae.com/index.php/fis/article/view/1241Porous material |
| spellingShingle | V. Sepe S. Marfia F. Auricchio Response of porous SMA: a micromechanical study Fracture and Structural Integrity Porous material |
| title | Response of porous SMA: a micromechanical study |
| title_full | Response of porous SMA: a micromechanical study |
| title_fullStr | Response of porous SMA: a micromechanical study |
| title_full_unstemmed | Response of porous SMA: a micromechanical study |
| title_short | Response of porous SMA: a micromechanical study |
| title_sort | response of porous sma a micromechanical study |
| topic | Porous material |
| url | https://www.fracturae.com/index.php/fis/article/view/1241 |
| work_keys_str_mv | AT vsepe responseofporoussmaamicromechanicalstudy AT smarfia responseofporoussmaamicromechanicalstudy AT fauricchio responseofporoussmaamicromechanicalstudy |