A novel traction-separation law for the prediction of the mixed mode response of ductile adhesive joints

Anyfantis, KN; Tsouvalis, NG

dc.contributor.author	Anyfantis, KN	en
dc.contributor.author	Tsouvalis, NG	en
dc.date.accessioned	2014-03-01T02:07:23Z
dc.date.available	2014-03-01T02:07:23Z
dc.date.issued	2012	en
dc.identifier.issn	00207683	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29556
dc.subject	Adhesive joints	en
dc.subject	Cohesive Zone Modeling	en
dc.subject	Ductile adhesives	en
dc.subject	Embedded process zone	en
dc.subject	Finite element analysis	en
dc.subject.other	Adhesive materials	en
dc.subject.other	Adhesively bonded joints	en
dc.subject.other	Cohesive-zone modeling	en
dc.subject.other	Constitutive relations	en
dc.subject.other	Damage initiation	en
dc.subject.other	Damage propagation	en
dc.subject.other	Ductile adhesives	en
dc.subject.other	Elastoplastic behaviour	en
dc.subject.other	Embedded process	en
dc.subject.other	Global response	en
dc.subject.other	Interface elements	en
dc.subject.other	Joint configuration	en
dc.subject.other	Linear decrease	en
dc.subject.other	Mixed mode	en
dc.subject.other	Mixed-Mode Loading	en
dc.subject.other	Mode II	en
dc.subject.other	Stress criterion	en
dc.subject.other	Traction-separation law	en
dc.subject.other	Adhesive joints	en
dc.subject.other	Ductile fracture	en
dc.subject.other	Exponential functions	en
dc.subject.other	Interfaces (materials)	en
dc.subject.other	Iodine	en
dc.subject.other	Traction (friction)	en
dc.subject.other	Finite element method	en
dc.title	A novel traction-separation law for the prediction of the mixed mode response of ductile adhesive joints	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.ijsolstr.2011.10.001	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.ijsolstr.2011.10.001	en
heal.publicationDate	2012	en
heal.abstract	A new traction-separation law that represents the constitutive relation of a ductile adhesive material in Mode I and Mode II is developed and introduced in interface elements for the finite element analysis of adhesive joints, within the framework of Cohesive Zone Modeling (CZM) techniques. The proposed law is based on the embedded process zone approach and is formulated to address the mixed-mode loading and fracture of adhesively bonded joints. This law is first used for the description of the pure Mode I (opening) and pure Mode II (sliding) loading and fracture and then it is integrated into a developed mixed-mode model in order to account for the dependence of the separate pure mode laws. The traction increasing part of the law is described by an exponential function, whereas the softening part is described by a linear decrease. Prediction of damage initiation is established through the nominal quadratic stress criterion, whereas the damage propagation is established through the linear energetic criterion. Experimental results from steel-to-steel single lap and Double Strap Joint configurations have been utilized for the validation of the proposed law and mixed-mode model. Comparisons are also provided from finite element analyses with the already known trapezoidal law and with the PRP (Park-Paulino-Roesler) model. The proposed law adequately captures the elastoplastic behaviour of the tested adhesive joints, in terms of their global response. Additionally, the strength of the tested joints is predicted with great accuracy. © 2011 Elsevier Ltd. All rights reserved.	en
heal.journalName	International Journal of Solids and Structures	en
dc.identifier.doi	10.1016/j.ijsolstr.2011.10.001	en
dc.identifier.volume	49	en
dc.identifier.issue	1	en
dc.identifier.spage	213	en
dc.identifier.epage	226	en