Journal of Glaciology
Sliding experiments were performed at –10 degrees C on smooth surfaces of freshwater columnar-grained S2 ice sliding against itself at a velocity of 8X10 –4 ms –1, with the purpose of examining whether normal stress parallel to the sliding plane affects frictional resistance. This component of the stress tensor was varied (0.20–1.83 MPa) using a loading system operated under biaxial compression, by orienting the sliding plane at two different angles, 26 degrees and 64 degrees, with respect to the principal loading direction. Under these conditions, no evidence was found to indicate that the normal stress in the direction of sliding affects the friction coefficient.
Fortt, Andrew L. and Schulson, Erland M., "Does the Normal Stress Parallel to the Sliding Plane Affect the Friction of Ice upon Ice?" (2011). Open Dartmouth: Faculty Open Access Articles. 2655.