Dynamic debonding in layered structures: a coupled ALE-cohesive approach
A computational formulation able to simulate crack initiation and growth in layered structural systems is proposed. In order to identify the position of the onset interfacial defects and their dynamic debonding mechanisms, a moving mesh strategy, based on Arbitrary Lagrangian-Eulerian (ALE) approach...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2017-06-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1918 |
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| _version_ | 1846145588124450816 |
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| author | Marco Francesco Funari Fabrizio Greco Paolo Lonetti |
| author_facet | Marco Francesco Funari Fabrizio Greco Paolo Lonetti |
| author_sort | Marco Francesco Funari |
| collection | DOAJ |
| description | A computational formulation able to simulate crack initiation and growth in layered structural systems is proposed. In order to identify the position of the onset interfacial defects and their dynamic debonding mechanisms, a moving mesh strategy, based on Arbitrary Lagrangian-Eulerian (ALE) approach, is combined with a cohesive interface methodology, in which weak based moving connections are implemented by using a finite element formulation. The numerical formulation has been implemented by means of separate steps, concerned, at first, to identify the correct position of the crack onset and, subsequently, the growth by changing the computational geometry of the interfaces. In order to verify the accuracy and to validate the proposed methodology, comparisons with experimental and numerical results are developed. In particular, results, in terms of location and speed of the debonding front, obtained by the proposed model, are compared with the ones arising from the literature. Moreover, a parametric study in terms of geometrical characteristics of the layered structure are developed. The investigation reveals the impact of the stiffening of the reinforced strip and of adhesive thickness on the dynamic debonding mechanisms. |
| format | Article |
| id | doaj-art-1f34fa663b934fb5822e11ad1e538458 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2017-06-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-1f34fa663b934fb5822e11ad1e5384582024-12-02T05:42:33ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932017-06-011141Dynamic debonding in layered structures: a coupled ALE-cohesive approachMarco Francesco FunariFabrizio GrecoPaolo LonettiA computational formulation able to simulate crack initiation and growth in layered structural systems is proposed. In order to identify the position of the onset interfacial defects and their dynamic debonding mechanisms, a moving mesh strategy, based on Arbitrary Lagrangian-Eulerian (ALE) approach, is combined with a cohesive interface methodology, in which weak based moving connections are implemented by using a finite element formulation. The numerical formulation has been implemented by means of separate steps, concerned, at first, to identify the correct position of the crack onset and, subsequently, the growth by changing the computational geometry of the interfaces. In order to verify the accuracy and to validate the proposed methodology, comparisons with experimental and numerical results are developed. In particular, results, in terms of location and speed of the debonding front, obtained by the proposed model, are compared with the ones arising from the literature. Moreover, a parametric study in terms of geometrical characteristics of the layered structure are developed. The investigation reveals the impact of the stiffening of the reinforced strip and of adhesive thickness on the dynamic debonding mechanisms.https://www.fracturae.com/index.php/fis/article/view/1918DebondingALEDynamic DelaminationFEMCrack Onset |
| spellingShingle | Marco Francesco Funari Fabrizio Greco Paolo Lonetti Dynamic debonding in layered structures: a coupled ALE-cohesive approach Fracture and Structural Integrity Debonding ALE Dynamic Delamination FEM Crack Onset |
| title | Dynamic debonding in layered structures: a coupled ALE-cohesive approach |
| title_full | Dynamic debonding in layered structures: a coupled ALE-cohesive approach |
| title_fullStr | Dynamic debonding in layered structures: a coupled ALE-cohesive approach |
| title_full_unstemmed | Dynamic debonding in layered structures: a coupled ALE-cohesive approach |
| title_short | Dynamic debonding in layered structures: a coupled ALE-cohesive approach |
| title_sort | dynamic debonding in layered structures a coupled ale cohesive approach |
| topic | Debonding ALE Dynamic Delamination FEM Crack Onset |
| url | https://www.fracturae.com/index.php/fis/article/view/1918 |
| work_keys_str_mv | AT marcofrancescofunari dynamicdebondinginlayeredstructuresacoupledalecohesiveapproach AT fabriziogreco dynamicdebondinginlayeredstructuresacoupledalecohesiveapproach AT paololonetti dynamicdebondinginlayeredstructuresacoupledalecohesiveapproach |