A multi-phase-field/polycrystal plasticity for rock salt: Micromorphic regularized grain-boundary slip

Rock salt formation has been widely considered as a desired geological repository system for nuclear waste disposal. While the crystalline structure of rock salt has been often incorporated phenomenologically in macroscopic constitutive models, the microstructural effects in the thermo-hydro-mechanical responses are dedicated by the nature of polycrystalline rock salt. This paper presents relevant modeling techniques designed for …