The von mises plastically deformed enclave as heat source for running cracks

Theocaris, PS; Kourkoulis, SK; Andrianopoulos, NP

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Kourkoulis, SK	en
dc.contributor.author	Andrianopoulos, NP	en
dc.date.accessioned	2014-03-01T01:09:06Z
dc.date.available	2014-03-01T01:09:06Z
dc.date.issued	1992	en
dc.identifier.issn	0020-7683	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10841
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0026622508&partnerID=40&md5=12b7824954060122232904bf91e44d2a	en
dc.subject.classification	Mechanics	en
dc.subject.other	FRACTURE	en
dc.subject.other	TIP	en
dc.title	The von mises plastically deformed enclave as heat source for running cracks	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1992	en
heal.abstract	All existing models interrelating crack propagation characteristic properties with heat exchange in zones around the crack tips simulate the heat production area by simple geometrical forms, like circles or squares. They assume also constant heat production rates over the whole area or the source. Contrariwise, the model introduced in the present study is based on two improved and more realistic assumptions concerning the shape and dimensions of the heat source and the spatial distribution of heat production density inside the heat source. These assumptions, together with Roscnthal's moving-point-source solution, yield a reasonable and improved model for a fast and rather simple numerical approach, whose results are in agreement with existing experimental evidence. The method was applied to two different materials, one polymer (polycarbonate) and the other metal (aluminum alloy) and their results appear to he compatible with reality and concordant with respective experiments In addition, the method was applied to relatively high crack propagation velocities revealing the existence of two symmetric off-axis temperat lire extrema in cither side of the crack propagation axis. This behavior may be directly relaled lo the phenomenon of crack branching. where similar maxima of energies and directions of branching are systematically observed at the same velocities. © 1991.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Solids and Structures	en
dc.identifier.isi	ISI:A1992GM38700004	en
dc.identifier.volume	29	en
dc.identifier.issue	2	en
dc.identifier.spage	187	en
dc.identifier.epage	196	en