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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Global Ice Fracture Experiments at Spitsbergen and
  Its Impact on Numerical Simulation of Ice Actions
  - Sveinung Loset (Norwegian University of Science
  and Technology\; University Centre in Svalbard (U
 NIS))
DTSTART;TZID=Europe/London:20171207T143000
DTEND;TZID=Europe/London:20171207T153000
UID:TALK96340AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/96340
DESCRIPTION:<span>Co-author: Wenjun Lu		(Norwegian University 
 of Science and Technology)        <br></span><span
 ><br>The ice cover in the Arctic is both diminishi
 ng in areal extent and thinning. This leads to a s
 ituation where gravity waves are more prone to bre
 ak up the ice cover into floe ice\, and penetrate 
 deeper into the ice fields in the Arctic. When thi
 s type of broken ice is interacting with offshore 
 structures and ships\, global fracturing of small 
 or larger floes will be a major part of the intera
 ction process and should be considered when either
  physically or numerically simulating the interact
 ion process. An ice floe may fracture in different
  patterns. For example\, it can be local bending f
 ailure or global splitting failure depending on th
 e contact properties\, geometry and confinement of
  the ice floe. Modelling these different fracture 
 patterns as a natural outcome of numerical simulat
 ions is rather challenging. This is mainly because
  the effects of crack propagation\, crack branchin
 g\, multi fracturing modes and eventual fragmentat
 ion within a solid material are still questions to
   be answered by the on-going research in the Comp
 utational Mechanic community. In addition\, the sc
 ale fracture properties of sea ice are still under
  discussions. To remedy some of these questions fo
 r ice we have conducted a number of physical fract
 ure experiments at Spitsbergen during the winter o
 f 2015-2017. The outcome of this research will be 
 reported as well as the impact on numerical simula
 tions of ice-structure interaction.</span>
LOCATION:Seminar Room 1\, Newton Institute
CONTACT:INI IT
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