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Simulation of an adhesive layer using a novel mixed mode cohesive law
2006 (English)In: CDCM 2006-Conference on Damage in Composite Materials 2006 18th-19th of September 2006 in Stuttgart, Germany: Online-Proceedings, 2006Conference paper, Abstract (Other academic)
Abstract [en]

The purpose of this work is to develop a flexible cohesive law to simulate the constitutive behaviour of an adhesive layer under mixed mode loading. A mixed mode cohesive law that captures the linear elastic and softening behaviour before fracture is presented. This simple model uses a coupled formulation to describe the mixed mode cohesive behaviour. It also allows for different fracture parameters, such as fracture energy, strength and critical separation in different mode mixities. Thus, the fracture process in mode I (peel), in mode II (shear) or in mixed mode (a combination of peel and shear) can be modelled without the usual constraint of a common fracture energy in peel and shear. Examples are given of FE-implementation of the normalised cohesive law, namely for the Unsymmetric Double Cantilever Beam (UDCB) specimen and the Mixed-mode double Cantilever Beam (MCB) specimen. Both specimens are adhesively bonded and loaded in mixed-mode.

Place, publisher, year, edition, pages
2006.
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:hj:diva-24127OAI: oai:DiVA.org:hj-24127DiVA: diva2:726116
Conference
CDCM 2006-Conference on Damage in Composite Materials
Available from: 2014-06-17 Created: 2014-06-17 Last updated: 2015-11-13

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http://www.ndt.net/article/cdcm2006/papers/hoegberg_i.pdf

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Salomonsson, Kent
Mechanical Engineering

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