Elastodynamic forms of caustics for running cracks under constant velocity

Theocaris, PS; Papadopoulos, GA

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Papadopoulos, GA	en
dc.date.accessioned	2014-03-01T01:05:49Z
dc.date.available	2014-03-01T01:05:49Z
dc.date.issued	1980	en
dc.identifier.issn	0013-7944	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9012
dc.subject.classification	Mechanics	en
dc.subject.other	FRACTURE MECHANICS	en
dc.title	Elastodynamic forms of caustics for running cracks under constant velocity	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0013-7944(80)90001-6	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0013-7944(80)90001-6	en
heal.language	English	en
heal.publicationDate	1980	en
heal.abstract	For the study of elastodynamic problems of propagating cracks it is necessary to evaluate the dynamic stress intensity factor KdI, which depends on the form of expressions for the stress components existing at the running crack tip at any instant of the propagation of the crack and the corresponding dynamic mechanical and optical properties of the material of the specimen under identical loading conditions. In this paper the distortion of the form of the corresponding reflected caustic from the lateral faces of a dynamically loaded transparent and optically inert specimen containing a transverse crack running under constant velocity was studied on the basis of complex potential elasticity theory and the influence of this form on the value of the dynamic stress intensity factor was given. The method was applied to the study of a propagating under Mode I crack in a PMMA specimen under various propagation velocities and the corresponding dynamic stress intensity factor KdI, evaluated. © 1980.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Engineering Fracture Mechanics	en
dc.identifier.doi	10.1016/0013-7944(80)90001-6	en
dc.identifier.isi	ISI:A1980KN44100001	en
dc.identifier.volume	13	en
dc.identifier.issue	4	en
dc.identifier.spage	683	en
dc.identifier.epage	698	en