Hysteresis and the Dynamic Elasticity of Consolidated Granular Materials

Journal Article · Thu Apr 01 00:00:00 EST 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.82.3280· OSTI ID:337556

Guyer, R A ^[1]; TenCate, J; Johnson, P ^[2]

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1. Department of Physics and Astronomy, University of Massachusetts, Amherst, Massachusetts 01003 (United States)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

Quasistatic elasticity measurements on rocks show them to be strikingly nonlinear and to have elastic hysteresis with end point memory. When the model for this quasistatic elasticity is extended to the description of nonlinear dynamic elasticity the elastic elements responsible for the hysteresis dominate the behavior. Consequently, in a resonant bar, driven to nonlinearity, the frequency shift and the attenuation are predicted to be nonanalytic functions of the strain field. A resonant bar experiment yielding results in substantial qualitative and quantitative accord with these predictions is reported. {copyright} {ital 1999} {ital The American Physical Society }

• OSTI ID: 337556
• Journal Information: Physical Review Letters, Vol. 82, Issue 16; Other Information: PBD: Apr 1999
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
GRANULAR MATERIALS
ELASTICITY
ROCKS
HYSTERESIS
NONLINEAR PROBLEMS
DYNAMICS
RODS
MECHANICAL VIBRATIONS