منابع مشابه
Frictional energy dissipation in materials containing cracks
Kachanov’s simplifiedmodel ofmicrocrack interaction is applied to an investigationof the behaviour of a cracked body under predominantly compressive periodic loading, so that the cracks experience periods of closure and slip, with frictional dissipation. The model is shown to be equivalent to a discrete elastic frictional systemwith each crack representing one node. Theorems and algorithms from...
متن کاملIntersonic shear cracks and fault ruptures
Recent experimental observations of intersonic shear rupture events that occur in a variety of material systems have rekindled interest in the intersonic failure phenomenon. Since the early 1990s, engineers and scientists working in all length scales, from the atomistic, the structural, all the way up to the scale of the earth’s deformation processes, have undertaken joint eorts to study this ...
متن کاملShear Resistance of Glulam Beams with Cracks
A reduction of the shear resistance was introduced with the crack factor kcr in Eurocode 5. The factor 0.67 corresponds to cracks that have a depth of 1/3 of the beam width, which rarely occurs under normal conditions. The glulam industry in Sweden has not observed any problems or shear failures due to cracks with previously used shear values. Hence the design requirements do not seem reasonabl...
متن کاملCracks faster than the shear wave speed
Classical dynamic fracture theories predict the surface wave speed to be the limiting speed for propagation of in-plane cracks in homogeneous, linear elastic materials subjected to remote loading. This report presents experimental evidence to the contrary. Intersonic shear-dominated crack growth featuring shear shock waves was observed along weak planes in a brittle polyester resin under far-fi...
متن کاملInteraction of Propagting Cracks and Shear Waves
Fluctuations in the crack tip structure should result in the release of elastic waves that propagate both into the bulk as well as along the surface. Ramanathan and Fisher (1997), and Morrisey and Rice (1998) examined such wave interactions in a series of increasingly sophisticated models. The possibility that in-plane and out-of-plane perturbations could persist along the crack surface, result...
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ژورنال
عنوان ژورنال: Journal of Experimental and Theoretical Physics Letters
سال: 2002
ISSN: 0021-3640,1090-6487
DOI: 10.1134/1.1517386