Transient concentrated thermal/mechanical loading of the faces of a crack in a coupled-thermoelastic solid

Georgiadis, HG; Brock, LM; Rigatos, AP

dc.contributor.author	Georgiadis, HG	en
dc.contributor.author	Brock, LM	en
dc.contributor.author	Rigatos, AP	en
dc.date.accessioned	2014-03-01T01:14:15Z
dc.date.available	2014-03-01T01:14:15Z
dc.date.issued	1998	en
dc.identifier.issn	0020-7683	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12957
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0032054777&partnerID=40&md5=f0a9665dd84a67a2979190cc5b54da5c	en
dc.subject.classification	Mechanics	en
dc.subject.other	Cracks	en
dc.subject.other	Green's function	en
dc.subject.other	Laplace transforms	en
dc.subject.other	Strain	en
dc.subject.other	Stress intensity factors	en
dc.subject.other	Thermoelasticity	en
dc.subject.other	Coupled thermoelastic solid	en
dc.subject.other	Stress analysis	en
dc.subject.other	crack	en
dc.subject.other	loading	en
dc.subject.other	stress	en
dc.subject.other	wave propagation	en
dc.title	Transient concentrated thermal/mechanical loading of the faces of a crack in a coupled-thermoelastic solid	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	A near-tip, transient, coupled thermoelastodynamic solution is presented for the plane stress/strain problem of a crack subjected to a concentrated thermal and/or mechanical loading, which is suddenly and symmetrically applied to the crack faces. Interest is focused on the stress field in the immediate vicinity of the crack during a small time-interval right after the application of loading and, therefore, the cracked body is considered of infinite extent and the crack itself of semi-infinite length. The loading consists of a pair of line heat sources or sinks (thermal loading) placed at the crack faces and/or a pair of equal, but opposite, line concentrated normal forces (mechanical loading) applied on the crack faces. These loadings may have an arbitrary time dependence (our analysis can deal with such cases), but here only the case of a step-function variation (the loadings act suddenly on the faces and are maintained there for all subsequent time) has been worked out. The thermoelastic wave propagation problem, which contains a characteristic length associated with the forcing function, is solved exactly in the time Laplace-transform domain by an analytic-function method. The inversion bf the time Laplace-transformed stress intensity factor is carried out through a numerical technique. The present solution provides the Green's function for thermoelastic cracked bodies under more general spatially non-uniform loadings. (C) 1998 Elsevier Science Ltd.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Solids and Structures	en
dc.identifier.isi	ISI:000071883800007	en
dc.identifier.volume	35	en
dc.identifier.issue	11	en
dc.identifier.spage	1075	en
dc.identifier.epage	1097	en