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EnglishThe boundary element method is employed in this study in conjunction with the finite element method to build a multi-physics hybrid numerical model for the computational study of stress corrosion cracking related to hydrogen diffusion in polycrystalline microstructures. More specifically a boundary integral representation is used to represent the micro-mechanics of the aggregate while an explicit finite element method is used to model inter-granular hydrogen diffusion. The inter-granular interaction between contiguous grains is represented through cohesive laws, whose physical parameters depend on the concentration of inter-granular hydrogen, diffusing along the interfaces according to the Fick's second law. The model couples the effectiveness of the polycrystalline boundary element micro-mechanics model with the generality of the finite element representation of the inter-granular diffusion process. Few numerical tests are reported, to demonstrate the potential of the proposed technique.
| Data di pubblicazione: | 2019 |
| Titolo: | Modelling stress-corrosion microcracking in polycrystalline materials by the Boundary Element Method |
| Autori: | |
| Citazione: | Benedetti, I., Gulizzi, V., & Milazzo, A. (2019). Modelling stress-corrosion microcracking in polycrystalline materials by the Boundary Element Method. |
| Abstract: | The boundary element method is employed in this study in conjunction with the finite element method to build a multi-physics hybrid numerical model for the computational study of stress corrosion cracking related to hydrogen diffusion in polycrystalline microstructures. More specifically a boundary integral representation is used to represent the micro-mechanics of the aggregate while an explicit finite element method is used to model inter-granular hydrogen diffusion. The inter-granular interaction between contiguous grains is represented through cohesive laws, whose physical parameters depend on the concentration of inter-granular hydrogen, diffusing along the interfaces according to the Fick's second law. The model couples the effectiveness of the polycrystalline boundary element micro-mechanics model with the generality of the finite element representation of the inter-granular diffusion process. Few numerical tests are reported, to demonstrate the potential of the proposed technique. |
| ISBN: | 978-0-9576731-6-8 |
| Settore Scientifico Disciplinare: | Settore ING-IND/04 - Costruzioni E Strutture Aerospaziali |
| Appare nelle tipologie: | 2.07 Contributo in atti di convegno pubblicato in volume |
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| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| Modelling stress-corrosion.pdf | Versione Editoriale | Open Access Visualizza/Apri |
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