Chemical reaction capping of thermal instabilities during shear of frictional faults

Veveakis, E; Alevizos, S; Vardoulakis, I

dc.contributor.author	Veveakis, E	en
dc.contributor.author	Alevizos, S	en
dc.contributor.author	Vardoulakis, I	en
dc.date.accessioned	2014-03-01T01:32:59Z
dc.date.available	2014-03-01T01:32:59Z
dc.date.issued	2010	en
dc.identifier.issn	0022-5096	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20268
dc.subject	Dissipation	en
dc.subject	Localization	en
dc.subject	Reaction kinetics	en
dc.subject	Shear heating	en
dc.subject	Thermodynamics	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Mechanics	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	Bifurcation methods	en
dc.subject.other	Commonly used	en
dc.subject.other	Dissipation	en
dc.subject.other	Elevated temperature	en
dc.subject.other	Endothermic chemical reactions	en
dc.subject.other	Friction laws	en
dc.subject.other	Frictional sliding	en
dc.subject.other	Loading condition	en
dc.subject.other	Localization	en
dc.subject.other	Material parameter	en
dc.subject.other	Physical behaviors	en
dc.subject.other	Quasistatic problems	en
dc.subject.other	Seismic slips	en
dc.subject.other	Shear heating	en
dc.subject.other	Steady shear	en
dc.subject.other	Temperature rise	en
dc.subject.other	Thermal instabilities	en
dc.subject.other	Thermo-viscoplastic	en
dc.subject.other	Association reactions	en
dc.subject.other	Creep	en
dc.subject.other	Friction	en
dc.subject.other	Heating	en
dc.subject.other	Numerical methods	en
dc.subject.other	Seismology	en
dc.subject.other	Temperature	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Reaction kinetics	en
dc.title	Chemical reaction capping of thermal instabilities during shear of frictional faults	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jmps.2010.06.010	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jmps.2010.06.010	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	In this paper we study the behavior of thermo-viscoplastic fault materials under steady shear. It is shown that during creep and at lower temperatures, the rate- and thermally dependent friction laws most commonly used could present similar mathematical and physical behavior. Under certain conditions, a fault may creep in a stable or unstable manner, expressing this instability as localization of dissipation and abrupt temperature rise. We show that this unstable manifestation is significant enough to trigger certain endothermic chemical reactions, and by the use of numerical bifurcation methods we verify that such a reaction determines the later stages of sliding, at elevated temperatures. With this formulation a qualitative description of the quasi-static problem is attempted, with the model admitting different regimes of frictional sliding, namely steady creep, transition from aseismic to seismic slip and seismic slip alone, depending on the material parameters, the nature of the reaction and the boundary and loading conditions. (C) 2010 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Journal of the Mechanics and Physics of Solids	en
dc.identifier.doi	10.1016/j.jmps.2010.06.010	en
dc.identifier.isi	ISI:000281982800001	en
dc.identifier.volume	58	en
dc.identifier.issue	9	en
dc.identifier.spage	1175	en
dc.identifier.epage	1194	en