On measuring flexural properties of ice using cantilever beams

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TypeArticle
Journal titleAnnals of Glaciology
ISSN0260-3055
Volume4
Pages5865; # of pages: 8
Subjectice; flexural strength; loads; cantilever beams; deflection; freshwater ice; elastic beam theory; beam deflection model; flexural strength
AbstractTests have been performed on fine-grained, columnar, freshwater ice sheets 40 to 70 mm thick grown in a refrigerated model basin. Cantilever beams of various geometries were tested for lengths ranging from 200 to 2000 mm and widths of 50 to 250 mm. Analysis of the results in terms of simple elastic beam theory indicated that modulus increased with increasing beam length and decreasing beam width. An analytical model for beam deflection was developed, taking into account the effects of buoyancy, shear, and rotation and deflection at the root. This model satisfactorily explained the observed deflection behaviour and the apparent geometry dependence of the modulus. Flexural strength was independent of beam length, but decreased with increasing beam width. Flexural strength was independent of loading rate, whereas modulus decreased with increased loading time.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-1130
NRC number22619
118
NPARC number20386417
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Record identifier9dc6ee4e-b112-401c-a132-82154b439144
Record created2012-07-25
Record modified2016-05-09
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