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A comparison between macro-element and finite element solutions for the stress analysis of functionally graded single-lap joints

Paroissien, Eric and Lachaud, Frédéric and Silva, Lucas Filipe Martins da and Seddiki, Salah Hammidi A comparison between macro-element and finite element solutions for the stress analysis of functionally graded single-lap joints. (2019) Composite Structures, 215. 331-350. ISSN 0263-8223

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Official URL: https://doi.org/10.1016/j.compstruct.2019.02.070

Abstract

The interest in functionally graded adhesive (FGA) joints has been increasing in recent years. For example, FGAs offer the opportunity to optimize the strength of multi-material bonded joints by locally tailoring the adhesive properties and without modifying the design of the adherends to be joined. The development of dedicated stress analyses to predict the stress distribution is then of the highest interest to control the strength of such joints. The Finite Element (FE) method is able to address the stress analysis of FGA joints but is computationally costly. Simplified stress analyses have then been developed. The objective of this paper is to assess the prediction of simplified stress analyses, solved through the macro-element (ME) technique, with respect to those of FE models. It is shown that the predictions of ME models are in a sufficient agreement with the FE models to be employed at a pre-sizing stage. The influence of the overlap length is then investigated by the means of the simplified stress analyses. A noticeable result is the existence of an overlap length for which the adhesive peak shear stress is minimal, in the 1D-bar kinematics framework.

Item Type:Article
HAL Id:hal-02049917
Audience (journal):International peer-reviewed journal
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 > Universidade do Porto - UP (PORTUGAL)
Laboratory name:
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Deposited By: ERIC PAROISSIEN
Deposited On:20 Feb 2019 13:36

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