On the validity of the tensor polynomial failure theory with stress interaction terms omitted

Theocaris, PS; Philippidis, TP

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Philippidis, TP	en
dc.date.accessioned	2014-03-01T01:08:28Z
dc.date.available	2014-03-01T01:08:28Z
dc.date.issued	1991	en
dc.identifier.issn	0266-3538	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10512
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0025991552&partnerID=40&md5=c5dade52606d92f6a4349b29fa294bc5	en
dc.subject.classification	Materials Science, Composites	en
dc.subject.other	Failure Analysis	en
dc.subject.other	Mathematical Models	en
dc.subject.other	Strength of Materials - Stresses	en
dc.subject.other	Failure Criterion	en
dc.subject.other	Stress Interaction	en
dc.subject.other	Tensor Polynomial Failure Theory	en
dc.subject.other	Composite Materials	en
dc.title	On the validity of the tensor polynomial failure theory with stress interaction terms omitted	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1991	en
heal.abstract	Tensor polynomial failure theory constitutes a flexible limiting strength condition which cannot, however, be considered as a failure criterion since some failure tensor components involved remain undefined. Because of this inconvenience authors trying to estimate values for the missing components of failure tensors will arbitrarily neglect normal stress interaction terms. This choice corresponds to some new failure condition, which, in a principal stress frame, is represented by a closed ellipsoidal surface oriented along the coordinate axes. Thus, the existence of three-dimensional loading paths not leading to failure is overlooked, and predictions of this criterion when compared with experimental data relating to the influence of triaxial stress states on material strength are erroneous. Apparent corroboration of experimental data in off-axis strength and biaxial tests by the tensor polynomial criterion with zero normal stress interaction terms, reported in the literature, was shown to be only superficial. It was concluded that the arbitrary zeroing of off-diagonal failure tensor components should be avoided. © 1990.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Composites Science and Technology	en
dc.identifier.isi	ISI:A1991EH28900005	en
dc.identifier.volume	40	en
dc.identifier.issue	2	en
dc.identifier.spage	181	en
dc.identifier.epage	191	en