The variational theory of fracture: diffuse cohesive energy and elastic-plastic rupture
This communication anticipates some results of a work in progress [1], addressed to explore the efficiency of the diffuse cohesive energy model for describing the phenomena of fracture and yielding. A first local model is partially successful, but fails to reproduce the strain softening regime. A mo...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2011-10-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero18/numero_18_art_1.pdf |
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| _version_ | 1846092607519719424 |
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| author | Riccardo March Giovanni Lancioni Gianpietro Del Piero |
| author_facet | Riccardo March Giovanni Lancioni Gianpietro Del Piero |
| author_sort | Riccardo March |
| collection | DOAJ |
| description | This communication anticipates some results of a work in progress [1], addressed to explore the efficiency of the diffuse cohesive energy model for describing the phenomena of fracture and yielding. A first local model is partially successful, but fails to reproduce the strain softening regime. A more robust non-local model, obtained by adding an energy term depending on the deformation gradient, describes many typical features of the inelastic response observed in experiments, including strain localization and necking. Fracture occurs as the result of extreme strain localization. The model predicts different fracture modes, brittle and ductile, depending on the analytical form of the cohesive energy function. |
| format | Article |
| id | doaj-art-de66bf50f2814bd6bc4eabaf63fedd9b |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2011-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-de66bf50f2814bd6bc4eabaf63fedd9b2025-01-02T20:54:49ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932011-10-01518513The variational theory of fracture: diffuse cohesive energy and elastic-plastic ruptureRiccardo MarchGiovanni LancioniGianpietro Del PieroThis communication anticipates some results of a work in progress [1], addressed to explore the efficiency of the diffuse cohesive energy model for describing the phenomena of fracture and yielding. A first local model is partially successful, but fails to reproduce the strain softening regime. A more robust non-local model, obtained by adding an energy term depending on the deformation gradient, describes many typical features of the inelastic response observed in experiments, including strain localization and necking. Fracture occurs as the result of extreme strain localization. The model predicts different fracture modes, brittle and ductile, depending on the analytical form of the cohesive energy function.http://www.gruppofrattura.it/pdf/rivista/numero18/numero_18_art_1.pdfFracture mechanicsEnergy methodsElastic-plastic ruptureVariational theory of fracture. |
| spellingShingle | Riccardo March Giovanni Lancioni Gianpietro Del Piero The variational theory of fracture: diffuse cohesive energy and elastic-plastic rupture Fracture and Structural Integrity Fracture mechanics Energy methods Elastic-plastic rupture Variational theory of fracture. |
| title | The variational theory of fracture: diffuse cohesive energy and elastic-plastic rupture |
| title_full | The variational theory of fracture: diffuse cohesive energy and elastic-plastic rupture |
| title_fullStr | The variational theory of fracture: diffuse cohesive energy and elastic-plastic rupture |
| title_full_unstemmed | The variational theory of fracture: diffuse cohesive energy and elastic-plastic rupture |
| title_short | The variational theory of fracture: diffuse cohesive energy and elastic-plastic rupture |
| title_sort | variational theory of fracture diffuse cohesive energy and elastic plastic rupture |
| topic | Fracture mechanics Energy methods Elastic-plastic rupture Variational theory of fracture. |
| url | http://www.gruppofrattura.it/pdf/rivista/numero18/numero_18_art_1.pdf |
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