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The post-peak load/deformation behavior of cohesive-frictional materials is an integral part of the overall response of a specimen to compressive loading. A more comprehensive understanding of the pre- and post-peak behavior is necessary. Recent developments in numerical modeling that allow study of the overall response of a synthetic material containing discrete heterogeneities and discontinuities both at the micro (particle) scale and at the larger scale of jointed rock masses can greatly aid the interpretation and application of laboratory test results on these materials.
post-failure, cohesive-frictional materials, complete stress-strain curve, compression testing, particle models, numerical modeling, distinct-element modeling
Consultant, Itasca Consulting Group, Inc., Minneapolis, Minnesota
Geomechanical Systems Market Manager, MTS Systems Corporation, Eden Prairie, Minnesota