Stress intensities in elastic-plastic plane-stress fields by caustics

Theocaris, PS

dc.contributor.author	Theocaris, PS	en
dc.date.accessioned	2014-03-01T01:08:33Z
dc.date.available	2014-03-01T01:08:33Z
dc.date.issued	1991	en
dc.identifier.issn	0001-5970	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10568
dc.subject	Experimental Method	en
dc.subject	Strain Hardening	en
dc.subject	Stress Field	en
dc.subject	Stress Intensity Factor	en
dc.subject.classification	Mechanics	en
dc.subject.other	Materials Science--Elastoplasticity	en
dc.subject.other	Brittle Fracture	en
dc.subject.other	Fracture Criteria	en
dc.subject.other	Fracture Toughness	en
dc.subject.other	Fracture Mechanics	en
dc.title	Stress intensities in elastic-plastic plane-stress fields by caustics	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/BF01299796	en
heal.identifier.secondary	http://dx.doi.org/10.1007/BF01299796	en
heal.language	English	en
heal.publicationDate	1991	en
heal.abstract	The experimental method of reflected causties was extended in this paper for the study of the strength of the plastic singularity and the respective plastic stress intensity factor at the tip of a mode-I crack in an elastic-strain hardening material. The elastic-plastic field around the crack tip was defined by means of the singular plastic solutions of Hutchinson, Rice and Rosengren (HRR-asymptotic field) which gives satisfactory results for small scale yielding types of deformation. The initial curve, generating the caustic by reflection from the front face of the deformed specimen lying well within the plastic zone, was accurately determined by considering the contribution of the elastic and plastic components of stresses and strains within the plastic zone. Results with experiments executed on steel specimens single-edge notched with various values of the hardening exponent n coincided with the form and shape of the theoretically derived caustics thus confirming the validity of the developed theory. The values of the plastic stress intensity factor thus derived corroborated the already existing results from previous experiments. © 1991 Springer-Verlag.	en
heal.publisher	Springer-Verlag	en
heal.journalName	Acta Mechanica	en
dc.identifier.doi	10.1007/BF01299796	en
dc.identifier.isi	ISI:A1991FN25100007	en
dc.identifier.volume	87	en
dc.identifier.issue	3-4	en
dc.identifier.spage	219	en
dc.identifier.epage	238	en