The dynamic behaviour of sharp V-notches under impact loading

Theocaris, PS; Papadopoulos, GA

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Papadopoulos, GA	en
dc.date.accessioned	2014-03-01T01:07:00Z
dc.date.available	2014-03-01T01:07:00Z
dc.date.issued	1987	en
dc.identifier.issn	0020-7683	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9731
dc.subject	Dynamic Behaviour	en
dc.subject.classification	Mechanics	en
dc.subject.other	DYNAMICS	en
dc.subject.other	PLATES - Crack Propagation	en
dc.subject.other	STRESSES - Concentration	en
dc.subject.other	IMPACT LOADING	en
dc.subject.other	SHARP V-NOTCHES	en
dc.subject.other	STRESS PULSES	en
dc.subject.other	STRESS WAVE PROPAGATIONS	en
dc.subject.other	MATERIALS TESTING	en
dc.title	The dynamic behaviour of sharp V-notches under impact loading	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0020-7683(87)90110-7	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0020-7683(87)90110-7	en
heal.language	English	en
heal.publicationDate	1987	en
heal.abstract	The dynamic behaviour of sharp V-notches which are either symmetric or oblique to the longitudinal boundary of a homogeneous elastic and isotropic strip subjected to an impact plane pulse was studied by the method of caustics. The stress pulse impinging on the flanks of the notch reflects and diffracts in different ways depending on the geometry of the notch relative to the coming pulse. For compressive stress pulses a stress concentration at the bottom of the notch does not create a crack propagation phenomenon, whereas for tensile pulses there is a possibility for an incubation, nucleation and eventual propagation of a crack. A complete experimental study of the incubation nucleation and propagation of cracks from the bottoms of notches in thin strips under tensile stress pulses was undertaken, whereas for compressive stress pulses the stress concentration at the bottom of the notch was evaluated. Interesting results were disclosed concerning the reinforcement of pulses by reflection and caging in, the evolution of stress concentration at the notch and the mode of crack propagation inside the plate. Dynamic stress intensity factors were evaluated all over the paths of crack propagation indicating a close intimacy between crack velocity and values of SIFs. © 1987.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Solids and Structures	en
dc.identifier.doi	10.1016/0020-7683(87)90110-7	en
dc.identifier.isi	ISI:A1987L677400001	en
dc.identifier.volume	23	en
dc.identifier.issue	12	en
dc.identifier.spage	1581	en
dc.identifier.epage	1600	en