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 | Size | Format | |
|---|---|---|---|---|
| SIPRE-Research-Report-41.pdf | 11.09 MB | Adobe PDF |  View/Open |