A lattice model of ice failure

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DOIResolve DOI: http://doi.org/10.4224/12340999
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TypeTechnical Report
Series titlePERD/CHC Report
AbstractA numerical model of the failure of ice features against structures is developed. The formulation is based on discretizing the ice mass to a set of nodes that are linked by breakable elements. The contact elements consist of arrangements of springs and dashpots, which represent the required rheology (e.g elastic or visco-elastic behaviour). Fracture is introduced according to a macro failure criterion (e.g. tensile strength). A set of equations describing the momentum balance of the nodes is solved to give the velocities and displacements at each time step. The model is applied to cases of uni-axial compression, plane indentation, and ridge impact on structures. Both brittle and visco-elastic behaviours are examined. The simulations predict stresses, initiation and propagation of cracks, as well as velocity and displacement fields. The resulting stresses are found to agree with available data.
Publication date
AffiliationNational Research Council Canada; NRC Canadian Hydraulics Centre
Peer reviewedNo
NRC numberHYD-TR-035
NPARC number12340999
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Record identifier16af6486-3ac6-4036-9702-bcc3d13c0677
Record created2009-09-11
Record modified2016-10-03
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