Author(s): J. E. Zufelt; M. J. Fisken
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Keywords: No Keywords
Abstract: The numerical modeling of ice jam evolution, including shoving and thickening events, requires knowledge of many ice parameters. The friction coefficient between the ice and the bank (or more correctly, the ice shear zone near the bank) is especially important as it relates to the major resisting force to downstream ice motion. While most numerical models treat the coefficient of friction as a constant value, it likely changes from a higher, static value to a lower, dynamic one as an ice accumulation fails and comes into motion. This paper describes tests undertaken to measure the static and dynamic coefficients of friction for a plastic model ice material. The resulting measurements are compared to currently used empirical formulae for granular materials.
Year: 1998