Universal slow dynamics in granular solids
Experimental properties of a new form of creep dynamics are reported, as manifest in a variety of sandstones, limestone, and concrete. The creep is a recovery behavior, following the sharp drop in elastic modulus induced either by nonlinear acoustic straining or rapid temperature change. The extent...
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| Published in | Physical review letters Vol. 85; no. 5; p. 1020 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
United States
31.07.2000
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| Online Access | Get more information |
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| Summary: | Experimental properties of a new form of creep dynamics are reported, as manifest in a variety of sandstones, limestone, and concrete. The creep is a recovery behavior, following the sharp drop in elastic modulus induced either by nonlinear acoustic straining or rapid temperature change. The extent of modulus recovery is universally proportional to the logarithm of the time after source discontinuation in all samples studied, over a scaling regime covering at least 10(3) s. Comparison of acoustically and thermally induced creep suggests a single origin based on internal strain, which breaks the symmetry of the inducing source. |
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| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.85.1020 |