منابع مشابه
Ice internal friction: standard theoretical perspectives on friction codified, adapted for the unusual rheology of ice, and unified
Sea ice contains flaws including frictional contacts. We aim to describe quantitatively the mechanics of those contacts, providing local physics for geophysical models. With a focus on the internal friction of ice, we review standard micro-mechanical models of friction. The solid’s deformation under normal load may be ductile or elastic. The shear failure of the contact may be by ductile flow, ...
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It i s emphasized t h a t a d i s t r i b u t i o n func t ion i n both the d i s l o c a t i o n loop lengths and obstac le s t rengths must be considered t o develop a q u a n t i t a t i v e theory f o r the h y s t e r e t i c d i s s i p a t i o n o f energy. That i s when d i s l o c a t i o n surmounts an undulat ing i n t e r n a l s t ress f i e l d and t h e break-away i s r e s t r i...
متن کاملINTERNAL FRICTION OF DEFORMED NaCL
Internal friction of deformed oriented NaCl single crystals has been measured as a function of flow stress, strain amplitude, frequency, temperature and divalent doping. In pure NaCl af er deformation a maximum of internal friction PI is observed at low temperatures. With increasing 1+ Sr doping a second but much weaker peak P2 appears at higher temperatures. The dependencies of PI on the...
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The empirical concept of internal friction was introduced 20 years ago. This review summarizes the results of experimental and theoretical studies that help to uncover the nature of internal friction. After the history of the concept, we describe the experimental challenges in measuring and interpreting internal friction based on the viscosity dependence of enzyme reactions. We also present spe...
متن کاملInternal Friction in Concentrated Alloys
Internal friction in concentrated alloys at kHz frequencies and at temperatures from 120 3 0 0 K has been studied in alpha-and beta-brasses as a function of grain size, temperature and pre-strain, and a statistical model has been proposed to account for the observations.
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ژورنال
عنوان ژورنال: Journal of the Japanese Society of Snow and Ice
سال: 1979
ISSN: 0373-1006,1883-6267
DOI: 10.5331/seppyo.41.233