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Title: Plastic deformation of thick-walled snow-ice cylinders under hydrostatic pressure
Authors: Jellinek, H. H. G. (Hans Helmut Gunter), 1917-
Keywords: Elasticity
Elastic shells
Elastic plates
Hydrostatic pressure
Ice creep
Snow plasticity
Ice plasticity
Static loads
Publisher: U.S. Army Snow, Ice, and Permafrost Research Establishment.
Engineer Research and Development Center (U.S.)
Series/Report no.: Research report (U.S. Army Snow
Description: Research Report
Summary: Experiments have been carried out on the plastic deformation of thick-walled snow-ice cylinders under hydrostatic pressure as a function of pressure and temperature. At constant circumferential stress and temperature the natural strain rate of closure is a constant. This constant varies with the circumferential stress according to a sine function and is exponentially dependent on temperature with an energy of activation of 14.1 kcal/mole at an average circumferential stress of 3.1 kg/cm^2. The mechanism of the plastic flow is in agreement with a mechanism proposed previously, that is, flow between grain boundaries takes place.
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