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SUMMARY:Global Ice Fracture Experiments at Spitsbergen and Its Impact on N
umerical Simulation of Ice Actions - Sveinung Loset (Norwegian University
of Science and Technology\; University Centre in Svalbard (UNIS))
DTSTART:20171207T143000Z
DTEND:20171207T153000Z
UID:TALK96340@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Co-author: Wenjun Lu (Norwegian University of Science a
nd Technology)
The ice cover in the Arctic is
both diminishing in areal extent and thinning. This leads to a situation w
here gravity waves are more prone to break up the ice cover into floe ice\
, and penetrate deeper into the ice fields in the Arctic. When this type o
f broken ice is interacting with offshore structures and ships\, global fr
acturing of small or larger floes will be a major part of the interaction
process and should be considered when either physically or numerically sim
ulating the interaction process. An ice floe may fracture in different pat
terns. For example\, it can be local bending failure or global splitting f
ailure depending on the contact properties\, geometry and confinement of t
he ice floe. Modelling these different fracture patterns as a natural outc
ome of numerical simulations is rather challenging. This is mainly because
the effects of crack propagation\, crack branching\, multi fracturing mod
es and eventual fragmentation within a solid material are still questions
to be answered by the on-going research in the Computational Mechanic com
munity. In addition\, the scale fracture properties of sea ice are still u
nder discussions. To remedy some of these questions for ice we have conduc
ted a number of physical fracture experiments at Spitsbergen during the wi
nter of 2015-2017. The outcome of this research will be reported as well a
s the impact on numerical simulations of ice-structure interaction.
LOCATION:Seminar Room 1\, Newton Institute
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