000015249 001__ 15249
000015249 005__ 20161115100216.0
000015249 04107 $$aeng
000015249 046__ $$k2016-08-21
000015249 100__ $$aSvetlizky, Ilya
000015249 24500 $$aShear stress peak radiated ahead of rapidly accelerating frictional rupture

000015249 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000015249 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000015249 506__ $$arestricted
000015249 520__ $$2eng$$aWe study rapidly accelerating rupture fronts at the onset of frictional motion by performing high-temporal-resolution measurements of both the real contact area and the strain fields surrounding the propagating rupture tip. We observe large-amplitude and localized shear stress peaks that precede rupture fronts and propagate at the shear-wave speed. These localized stress waves are initiated during the rapid rupture acceleration phase and are capable of nucleating a secondary supershear rupture. The amplitude of these localized waves roughly scales with the dynamic stress drop and does not decrease as long as the rupture front driving it continues to propagate. These experimental results are qualitatively described by a self-similar analytical solution of a suddenly expanding shear crack. Quantitative agreement with experiment is provided by realistic finite element simulations that describe both their amplitude growth and spatial scaling. Our results demonstrate the extensive applicability of brittle fracture theory to fundamental understanding of friction.

000015249 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015249 653__ $$a

000015249 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000015249 720__ $$aSvetlizky, Ilya
000015249 8560_ $$ffischerc@itam.cas.cz
000015249 8564_ $$s224631$$uhttps://invenio.itam.cas.cz/record/15249/files/TS.SM06-3.03.pdf$$yOriginal version of the author's contribution as presented on CD,  page 2172, code TS.SM06-3.03
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000015249 962__ $$r13812
000015249 980__ $$aPAPER