DIRECTING TRANSMISSION PATTERNS IN GRANULAR MATERIALS FROM THE GRAIN SCALE
Abstract
Our objective is to develop methods for analyzing transmission patterns that could unmask the ultimate pattern of the shear band in the initial stages of loading. This will be not only prior to peak strength but also well before any known mesoscale failure mechanisms initiate inside the sand sample. The key lesson learned there was the ultimate location of the shear band is encoded in the grain motions from as early as the beginning of loading. This discovery has opened doors for complementary studies of transmission patterns in the pre-failure regime. Equally important is that we are now uniquely poised to take on the challenge of changing the natural course of failure (i.e., the location and/or mode of failure) from the level of individual grains, under operational loading conditions. This has never been attempted. Knowledge of causal mechanisms at the level of individual contacts and grains is crucial to this effort.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 23, 2016
- Source ID
- FA23861514059
Entities
People
- Antoinette Tordesillas
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Melbourne