Modelling stress-corrosion microcracking in polycrystalline materials by the Boundary Element Method

Risultato della ricerca: Conference contribution


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.
Lingua originaleEnglish
Titolo della pubblicazione ospiteAdvances in Boundary Element and Meshless Techniques XX
Numero di pagine6
Stato di pubblicazionePublished - 2019


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