Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/2733
Title: Creep of snow under combined stress
Authors: Landauer, J. K. (Joseph K.)
Keywords: Snow
Snow mechanics
Snow properties
Snow creep
Creep
Deformation
Stresses
Stress analysis
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: Laboratory experiments on the creep of sifted snow under uniaxial, hydrostatic, and confined-side compressive stresses are described, and the results are discussed on the basis of an additive theory for combined stresses. Stress (4-40 psi) and temperature (-3.6°C to -13.6°C) dependence was investigated for 35 samples (initial density = 0.4 g/cm^3) subjected to uniaxial and hydrostatic stress for 200-sec time increments. Another series of 104 samples (initial densities 0.36-0.63) was subjected to uniaxial, hydrostatic, and confined-side compressive stresses until an arbitrary change in density was reached. In all cases the applied stress ultimately became a shear stress acting between grains, the open structure reacting differently to combined stresses and separate uniaxial stresses. An activation energy of 13,400 cal/mol was obtained from the first group of tests.
Rights: Approved for public release; distribution is unlimited.
URI: http://hdl.handle.net/11681/2733
Appears in Collections:Research Report

Files in This Item:
File Description SizeFormat 
SIPRE-Research-Report-41.pdf11.09 MBAdobe PDFThumbnail
View/Open