Mode II fracture of an elastic-plastic sandwich layer
The shear strength of a pre-cracked sandwich layer is predicted, assuming that the layer is linear elastic or elastic-plastic, with yielding characterized either by the J2 plasticity theory or by a strip-yield model. The substrates are elastic and of dissimilar modulus to that of the layer. Two geom...
| Hoofdauteurs: | , , |
|---|---|
| Formaat: | Journal article |
| Taal: | English |
| Gepubliceerd in: |
ASME International
2019
|
| _version_ | 1826312332584681472 |
|---|---|
| author | Martínez-Pañeda, E Cuesta, II Fleck, N |
| author_facet | Martínez-Pañeda, E Cuesta, II Fleck, N |
| author_sort | Martínez-Pañeda, E |
| collection | OXFORD |
| description | The shear strength of a pre-cracked sandwich layer is predicted, assuming that the layer is linear elastic or elastic-plastic, with yielding characterized either by the J2 plasticity theory or by a strip-yield model. The substrates are elastic and of dissimilar modulus to that of the layer. Two geometries are analyzed: (i) a semi-infinite crack in a sandwich layer, subjected to a remote mode II K-field and (ii) a center-cracked sandwich plate of finite width under remote shear stress. For the semi-infinite crack, the near-tip stress field is determined as a function of elastic mismatch, and crack tip plasticity is either prevented (the elastic case) or duly accounted for (the elastic-plastic case). Analytical and numerical solutions are then obtained for the center-cracked sandwich plate of the finite width. First, a mode II K-calibration is obtained for a finite crack in the elastic sandwich layer. Second, the analysis is extended to account for crack tip plasticity via a mode II strip-yield model of finite strength and finite toughness. The analytical predictions are verified by finite element simulations, and a failure map is constructed in terms of specimen geometry and crack length. |
| first_indexed | 2024-03-07T08:29:01Z |
| format | Journal article |
| id | oxford-uuid:4f2bc171-bf5a-4194-a7df-ccda47204cee |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:29:01Z |
| publishDate | 2019 |
| publisher | ASME International |
| record_format | dspace |
| spelling | oxford-uuid:4f2bc171-bf5a-4194-a7df-ccda47204cee2024-02-29T06:32:36ZMode II fracture of an elastic-plastic sandwich layerJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4f2bc171-bf5a-4194-a7df-ccda47204ceeEnglishSymplectic ElementsASME International2019Martínez-Pañeda, ECuesta, IIFleck, NThe shear strength of a pre-cracked sandwich layer is predicted, assuming that the layer is linear elastic or elastic-plastic, with yielding characterized either by the J2 plasticity theory or by a strip-yield model. The substrates are elastic and of dissimilar modulus to that of the layer. Two geometries are analyzed: (i) a semi-infinite crack in a sandwich layer, subjected to a remote mode II K-field and (ii) a center-cracked sandwich plate of finite width under remote shear stress. For the semi-infinite crack, the near-tip stress field is determined as a function of elastic mismatch, and crack tip plasticity is either prevented (the elastic case) or duly accounted for (the elastic-plastic case). Analytical and numerical solutions are then obtained for the center-cracked sandwich plate of the finite width. First, a mode II K-calibration is obtained for a finite crack in the elastic sandwich layer. Second, the analysis is extended to account for crack tip plasticity via a mode II strip-yield model of finite strength and finite toughness. The analytical predictions are verified by finite element simulations, and a failure map is constructed in terms of specimen geometry and crack length. |
| spellingShingle | Martínez-Pañeda, E Cuesta, II Fleck, N Mode II fracture of an elastic-plastic sandwich layer |
| title | Mode II fracture of an elastic-plastic sandwich layer |
| title_full | Mode II fracture of an elastic-plastic sandwich layer |
| title_fullStr | Mode II fracture of an elastic-plastic sandwich layer |
| title_full_unstemmed | Mode II fracture of an elastic-plastic sandwich layer |
| title_short | Mode II fracture of an elastic-plastic sandwich layer |
| title_sort | mode ii fracture of an elastic plastic sandwich layer |
| work_keys_str_mv | AT martinezpanedae modeiifractureofanelasticplasticsandwichlayer AT cuestaii modeiifractureofanelasticplasticsandwichlayer AT fleckn modeiifractureofanelasticplasticsandwichlayer |