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A Simplified Stress Analysis of Bonded Joints using Macro-Elements

Paroissien, Eric and Lachaud, Frédéric and Jacobs, Thomas A Simplified Stress Analysis of Bonded Joints using Macro-Elements. (2013) In: Advances in modeling and design of adhesively bonded systems. Scrivener Publishing LLC, 93-145. ISBN 978-1-118-68637-9

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Official URL: http://dx.doi.org/10.1002/9781118753682.ch4

Abstract

The Finite Element (FE) method is able to address the stress analysis of bonded joints. Nevertheless, analyses based on FE models are computationally expensive and it would be profitable to develop simplified approaches enabling extensive parametric studies. Firstly, a 1D-bar and a 1D-beam simplified models for the bonded joint stress analysis assuming a linear elastic adhesive material are presented. These models are derived using an approach, inspired by the finite element (FE) method and based on the formulation of a 4-node macro-element, which is able to simulate an entire bonded overlap. Moreover, a linear shear stress variation in the adherend thickness is included in the formulation. Secondly, a numerical procedure is presented which takes into account non-linear adhesive material behavior and is illustrated using elastic perfectly plastic, bi-linear plastic, and bi-triangular damage evolution adhesive laws. Test cases are provided, in order to show that the same hypotheses lead to the same results. Finally, for assessment purpose, assuming an elastic perfectly plastic adhesive behavior following the von Mises yield criterion, the results obtained by the simplified 1D-beam model are compared with the results predicted by the 3D FE model. Good agreement is shown.

Item Type:Book Section
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Sogeti (FRANCE)
Laboratory name:
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Deposited By: ERIC PAROISSIEN
Deposited On:06 Apr 2017 09:50

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