Pregled bibliografske jedinice broj: 1169452
Discrete element model for the failure analysis of partially saturated porous media with propagating cracks represented with embedded strong discontinuities
Discrete element model for the failure analysis of partially saturated porous media with propagating cracks represented with embedded strong discontinuities // Computer methods in applied mechanics and engineering, 390 (2022), 114482, 27 doi:10.1016/j.cma.2021.114482 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 1169452 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Discrete element model for the failure analysis of
partially saturated porous media with propagating
cracks represented with embedded strong
discontinuities
Autori
Nikolić, Mijo
Izvornik
Computer methods in applied mechanics and engineering (0045-7825) 390
(2022);
114482, 27
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Partially saturated porous media ; Failure mechanisms ; Matric suction ; Capillary pressure ; Desiccation cracking ; Embedded strong discontinuities
Sažetak
A novel, fully coupled hydro-mechanical model for the failure analysis of partially saturated porous media is presented. Failure mechanisms pertain to propagating discontinuities, i.e. tensile cracks and shear bands influenced by matric suction or capillary pressure, that arises in the partially water saturated conditions. In order to simulate propagating discontinuities, a discrete model based on lattice domain representation is used, where embedded strong discontinuities serve for mesh objective propagation of discontinuities. The full coupling is provided with Biot porous media theory, Bishop effective stress concept and nonlinear Richards’s equation for the unsaturated fluid flow. The relation between suction and saturation state is given through the van Genuchten constitutive model. The capabilities of the model are presented with the three representative simulations. The first one is related to unsaturated flow in one dimensional sand column. The second one deals with mechanically influenced propagation of dilatant and compactive shear bands with the goal of examining how these mechanisms influence the pore pressure field, suction development and saturation state of the porous media. The third one explores the important geo-environmental engineering application in which development of tensile cracks is triggered and propagated by drying mechanism of the porous media, also known as desiccation cracking of soils.
Izvorni jezik
Engleski
Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti
POVEZANOST RADA
Projekti:
UIP-2017-05-3429 - Eksperimentalna i numerička istraživanja mehanizama u nesaturiranim geomaterijalima (UNSAT1) (Štambuk Cvitanović, Nataša, HRZZ - 2017-05) ( CroRIS)
EK-EFRR-KK.01.1.1.02.0027 - Implementacijom suvremene znanstvenoistraživačke infrastrukture na FGAG Split do pametne specijalizacije u zelenoj i energetski učinkovitoj gradnji (Jajac, Nikša, EK - KK.01.1.1.02) ( CroRIS)
Ustanove:
Fakultet građevinarstva, arhitekture i geodezije, Split
Profili:
Mijo Nikolić
(autor)
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
