Ice collision experiments with a pendulum impact apparatus

Clarke, Geoffrey Stephen (2012) Ice collision experiments with a pendulum impact apparatus. Masters thesis, Memorial University of Newfoundland.

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Abstract

This thesis examines the interaction of ice and structures under simplified dynamic impact conditions, where the compliance of the structure and geometry of the ice was varied. Laboratory ice and iceberg ice conical specimens were impacted with a simply supported steel plate in a pendulum impact apparatus. The geometry of the ice cone was varied from 20 to 40 degrees and the thickness of the steel plate was varied from 0.25" to 0.75". Initial potential energy remained constant for each experiment. Forces, nominal pressures and specific energies were analyzed using response surface methodology. The compliance of the plate and cone angle of the ice specimen showed significant influence on the peak forces and nominal pressures. However, the specific energy was found to be only dependent on the compliance of the plate. Four iceberg specimens were also tested and significantly lower peak forces, nominal pressures, and specific energy was observed in the iceberg samples.

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