Počet záznamů: 1
SANISAND-H: A sand bounding surface model for high pressures
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SYSNO ASEP 0578850 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název SANISAND-H: A sand bounding surface model for high pressures Tvůrce(i) Zhang, A. (CN)
Dafalias, Yannis F. (UT-L)
Wang, D. (CN)Celkový počet autorů 3 Číslo článku 105579 Zdroj.dok. Computers and Geotechnics. - : Elsevier - ISSN 0266-352X
Roč. 161, September (2023)Poč.str. 19 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova constitutive model ; plasticity ; critical state ; high pressure ; bounding surface ; sand Vědní obor RIV JC - Počítačový hardware a software Obor OECD Civil engineering CEP GA23-05338S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UT-L - RVO:61388998 UT WOS 001028191700001 EID SCOPUS 85162169262 DOI 10.1016/j.compgeo.2023.105579 Anotace This paper presents a new bounding surface constitutive model for sand, named SANISAND-H, capable of predicting the shear and volumetric behavior of the material under extra-high range of pressures, in addition to normal pressures. The model is an extension of the SANISAND08 model (Taiebat and Dafalias, 2008) with a closed cone-type yield surface that obeys rotational and isotropic hardening. The critical state line and the limiting isotropic compression curve of the SANISAND08 model are modified to accommodate a wide range of pressures. A new constitutive ingredient is the definition of a reference compression curve that serves as bounding surface for establishing the isotropic hardening rule of the yield surface. The kinematic hardening rule and stress-dilatancy relationship of the SANISAND08 model are significantly modified, to better capture the response of sands under high pressure. The value of the back stress ratio at the initiation of a new loading process is re-introduced, ensuring a smooth elastic-plastic transition necessary for accurate simulation of the response under loading reversals. The SANISAND-H model simulations are in very good agreement with test data for Toyoura and Cambria sands under various drained and undrained monotonic stress loading paths in a wide range of densities and pressures. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2024 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0266352X23003361
Počet záznamů: 1