A micromechanical-based damage analysis of a cylindrical bar under torsion: Theoretical results, Finite Elements verification and application
| Autor: | Luc Dormieux, Djimedo Kondo, Emma Lanoye |
|---|---|
| Přispěvatelé: | Laboratoire de Mécanique de Lille - FRE 3723 (LML), Université de Lille, Sciences et Technologies-Centrale Lille-Centre National de la Recherche Scientifique (CNRS), Université de Lille, Sciences et Technologies, Modélisation et expérimentation multi-échelle pour les solides hétérogènes (multi-échelle), Laboratoire Navier (navier umr 8205), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC), Institut Jean le Rond d'Alembert (DALEMBERT), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de Lille, Sciences et Technologies-Ecole Centrale de Lille-Université de Lille |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Isotropic elastic damage Finite element software business.industry Exact solution Applied Mathematics Mechanical Engineering Isotropy Damage analysis Torsion (mechanics) Structural engineering engineering.material Condensed Matter Physics Finite element method Cylindrical bar under torsion [SPI]Engineering Sciences [physics] Exact solutions in general relativity Quasi brittlematerial engineering General Materials Science Cast iron Finite Elements computation business Softening Microfracture |
| Zdroj: | Theoretical and Applied Fracture Mechanics Theoretical and Applied Fracture Mechanics, Elsevier, 2014, 74, pp.116-125. ⟨10.1016/j.tafmec.2014.08.006⟩ Theoretical and Applied Fracture Mechanics, 2014, 74, pp.116-125. ⟨10.1016/j.tafmec.2014.08.006⟩ |
| ISSN: | 0167-8442 |
| Popis: | International audience; We first present exact closed-form solutions to the problem of a cylindrical bar subjected to a torsion loading. The bar is made of a material whose behavior is modeled by means of a class of micromechanically based isotropic elastic damage models. It is shown that under an increasing torsion, the bar exhibits a global softening regime related to its progressive deterioration. The paper also provides explicit expressions of the mechanical fields as well as of the damage distribution in the bar. A careful attention is given to the response during an unloading step. Finally, after implementing the damage models in a Finite Element software, we simulate the bar response under the same torsion loading. Interestingly a full agreement is noted between the theoretical predictions and the numerical results, also in the softening regime. Finally, the proposed models are applied to a gray cast iron; the predictions compare well to experimental data. |
| Databáze: | OpenAIRE |
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