A three-dimensional FEM-DEM model of an ice sheet

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Conference article in proceedings
Date
2017-06-11
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Language
en
Pages
12
Series
Proceedings of the 24th International Conference on Port and Ocean Engineering under Arctic Conditions, POAC'17, Proceedings : International Conference on Port and Ocean Engineering Under Arctic Conditions
Abstract
A three-dimensional combined finite-discrete element (FEM-DEM) model of an ice sheet is presented. Centroidal Voronoi tessellation with a random generating point set is used to produce an unstructured mesh. Mesh consists of convex polyhedra as the discrete elements and a Delaunay-triangulated network, or a lattice, of Timoshenko beam elements connecting their mass centroids. We investigate, by performing simple in-plane and out-of-plane mechanical tests, how the model behaves while the sheet is still intact. We compute the effective Young’s modulus and study the bending of an ice sheet on an elastic foundation for several different specimen sizes.
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Keywords
Ice, Combined FEM-DEM, Beam lattice network, Size effect, Bending
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Citation
Lilja , V-P , Polojärvi , A , Tuhkuri , J & Paavilainen , J 2017 , A three-dimensional FEM-DEM model of an ice sheet . in Proceedings of the 24th International Conference on Port and Ocean Engineering under Arctic Conditions, POAC'17 . Proceedings : International Conference on Port and Ocean Engineering Under Arctic Conditions , International Conference on Port and Ocean Engineering under Arctic Conditions (POAC) , International Conference on Port and Ocean Engineering Under Arctic Conditions , Busan , Korea, Republic of , 11/06/2017 . < http://www.poac.com/Papers/2017/pdf/POAC17_136_Ville-Pekka.pdf >