دورية أكاديمية
Determination of the critical load and energy release rate in mode II delamination using a meshfree method
| العنوان: | Determination of the critical load and energy release rate in mode II delamination using a meshfree method |
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| المؤلفون: | Pekbey Yeliz, Hesar Goudarz Ghanizadeh, Yildiz Hasan, Maleki Farshid Khosravi |
| المصدر: | Science and Engineering of Composite Materials, Vol 21, Iss 2, Pp 223-238 (2014) |
| بيانات النشر: | De Gruyter, 2014. |
| سنة النشر: | 2014 |
| المجموعة: | LCC:Materials of engineering and construction. Mechanics of materials |
| مصطلحات موضوعية: | delamination fracture toughness, energy release rate, mode ii loading, Materials of engineering and construction. Mechanics of materials, TA401-492 |
| الوصف: | Simulation of fracture by using numerical methods is important to treat geometries that change in time. In this study, both numerical and experimental investigations are presented for the delamination under mode II loading, detailing the derivation of the formulations in numerical simulations of fracture. The simulation of the delamination under mode II loading based on the cohesive segments model was investigated by using a meshfree method. Then, an experimental investigation was used to verify the meshfree method’s results. For tests under mode II loading, three-point end-notched flexure specimens, which are made of carbon/epoxy laminate (AS4/3501-6) which consists of 10 plies in [0]10 and [0/90/0/90/0]s lay-up with delamination inserted in the middle of the laminate, were used for the interlaminar fracture toughness tests. The problem was solved for [0]10, [0/45/-45/90/0]s, [0/90/0/90/0]s, [0/90/0/90/30]s, [0/90/0/90/45]s and [0/90/0/90/60]s laminates with mid-plane delaminations, and the results were verified for different composite materials. The critical fracture force, which can be experimentally measured, was used to calculate the mode II delamination fracture toughness of the carbon/epoxy laminate. In addition, values of the integral for 209 (11×19) and 253 (11×23) background meshes with equivalent interval sizes were compared. For a relatively fine background mesh, the critical load was converged. Results obtained from the meshfree element-free Galerkin method showed very good agreement with experimental data for single-mode delamination under mode II loading. The results presented will help in the implementation of mesh design techniques that protect numerical accuracy while minimizing computational expense. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 0792-1233 2191-0359 |
| Relation: | https://doaj.org/toc/0792-1233; https://doaj.org/toc/2191-0359 |
| DOI: | 10.1515/secm-2013-0114 |
| URL الوصول: | https://doaj.org/article/cf2c4effb2c54644a856b61515047bf8 |
| رقم الأكسشن: | edsdoj.f2c4effb2c54644a856b61515047bf8 |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 07921233 21910359 |
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| DOI: | 10.1515/secm-2013-0114 |