Effective Tensile Strength of an Ice Sheet Using a Three-dimensional FEM-DEM Approach

A sea ice sheet may fail through several mechanisms when interacting with an obstacle. Susceptibility and mode of failure behave as functions of the physical size of a sheet. In this paper we compute the effective uniaxial tensile strength of an ice sheet for several different specimen sizes by appl...

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Bibliographic Details
Main Authors: Lilja, Ville-Pekka, Polojärvi, Arttu, Tuhkuri, Jukka, Paavilainen, Jani
Other Authors: Department of Mechanical Engineering, RAND Simulation Oy, Aalto-yliopisto, Aalto University
Format: Other/Unknown Material
Language:English
Published: POAC 2017
Subjects:
Ice
Combined FEM-DEM
Beam lattice network
Rate/size effect
Effective tensile strength
Arctic
Ice Sheet
Sea ice
Online Access:https://aaltodoc.aalto.fi/handle/123456789/35291
Description
Summary:A sea ice sheet may fail through several mechanisms when interacting with an obstacle. Susceptibility and mode of failure behave as functions of the physical size of a sheet. In this paper we compute the effective uniaxial tensile strength of an ice sheet for several different specimen sizes by applying a three-dimensional combined finite-discrete element approach. We evaluate the effect of the loading rate by using two displacement rates. Although a rate-independent cohesive formulation is used and the displacement rates applied are low, a significant rate effect emerges. Peer reviewed

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