Academic Journal
Yield criterion and finite strain behavior of random porous isotropic materials
| العنوان: | Yield criterion and finite strain behavior of random porous isotropic materials |
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| المؤلفون: | Hure, Jeremy |
| المساهمون: | Laboratoire de Comportement Mécanique des Matériaux Irradiés (LCMI), Service d'Etudes des Matériaux Irradiés (SEMI), Département des Matériaux pour le Nucléaire (DMN), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Département des Matériaux pour le Nucléaire (DMN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay |
| المصدر: | ISSN: 0997-7538 ; European Journal of Mechanics - A/Solids ; https://cea.hal.science/cea-03748681 ; European Journal of Mechanics - A/Solids, 2021, pp.104143. ⟨10.1016/j.euromechsol.2020.104143⟩. |
| بيانات النشر: | HAL CCSD Elsevier |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Plasticity, Porous materials, Random void distribution, Inhomogeneous yielding, [CHIM.MATE]Chemical Sciences/Material chemistry |
| الوصف: | International audience ; The mechanical response of isotropic elastoplastic materials containing random distributions of initially spherical voids is investigatedcomputationally based on Fast Fourier Transform simulations. Numerical limit-analysis simulations at constant stresstriaxiality allow to determine the yield surfaces, leading in particular to the determination of a Representative Volume Elementsize for the onset of coalescence / inhomogeneous yielding. Moreover, two different coalescence regimes are observed that differby the presence of shearing. The yield surfaces are found to be consistent with the combination of two models proposed in theliterature, a GTN-type model calibrated for homogeneous yielding of random porous materials and an inhomogeneous yieldingmodel accounting for both coalescence with or without shear. Finite strain simulations performed for different hardening moduliand stress triaxialities under axisymmetric loading conditions confirm the existence of a RVE up to the onset of inhomogeneousyielding. Coalescence strains are found to be significantly smaller for random porous materials than for periodic distribution ofvoids. A homogenized model is finally proposed that reproduces quantitatively the behavior of isotropic elastoplastic materialscontaining random distributions of voids under finite strains. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | cea-03748681; https://cea.hal.science/cea-03748681; https://cea.hal.science/cea-03748681/document; https://cea.hal.science/cea-03748681/file/CoaRVE_ARXIV.pdf |
| DOI: | 10.1016/j.euromechsol.2020.104143 |
| الاتاحة: | https://cea.hal.science/cea-03748681 https://cea.hal.science/cea-03748681/document https://cea.hal.science/cea-03748681/file/CoaRVE_ARXIV.pdf https://doi.org/10.1016/j.euromechsol.2020.104143 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.F4B96E00 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.euromechsol.2020.104143 |
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