Scale Effects in Lattice-Based Modeling of Ice Sheet

Arttu Polojärvi, Ville-Pekka Lilja, Jukka Tuhkuri, Jani Paavilainen

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference article in proceedingsScientificvertaisarvioitu

Abstrakti

Three-dimensional numerical modelling of an intact ice sheet can be performed using different techniques. Models aiming for computational efficiency often rely on lattices of beams or different types of springs, that is, ice sheet is modelled using a network of beams or springs, which connect rigid bodies to each other. This technique is often used in the context of discrete element method, combined finite-discrete element method, and bonded particle models. Often the use of lattices introduces scale effects, which show in the response of a modeled ice sheet to external loading. Another source of scale effects can be the used material model. This paper discusses the scale effects of a model, which is based on a network of Timoshenko beams that fracture through a cohesive softening process. The results appear to scale as would be expected for quasi-brittle materials.
AlkuperäiskieliEnglanti
OtsikkoProceedings of the 25th IAHR International Symposium on Ice
KustantajaInternational Association for Hydro-Environment Engineering and Research (IAHR)
Sivumäärä10
ISBN (elektroninen)978-82-7598-120-0
TilaJulkaistu - 2021
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaInternational Association for Hydro-Environment Engineering and Research International Symposium on Ice - Trondheim, Norja
Kesto: 23 marrask. 202025 marrask. 2020
Konferenssinumero: 25

Julkaisusarja

NimiIAHR International Symposium on Ice
ISSN (elektroninen)2414-6331

Conference

ConferenceInternational Association for Hydro-Environment Engineering and Research International Symposium on Ice
LyhennettäIAHR-ICE
Maa/AlueNorja
KaupunkiTrondheim
Ajanjakso23/11/202025/11/2020

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