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On the potential static strength of hybrid (bolted/bonded) lap joints with functionally graded adhesives

Paroissien, Eric and Lachaud, Frédéric On the potential static strength of hybrid (bolted/bonded) lap joints with functionally graded adhesives. (2019) AIAA Journal, 57 (9). 4093-4103. ISSN 0001-1452

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Official URL: http://doi.org/10.2514/1.J058372


In this paper, the potential static strength of hybrid (bolted/bonded) – termed HBB – joints with functionally graded adhesives (FGA) is theoretically investigated, in reference to the pure bolted joint, the pure bonded joint and the HBB joint with homogeneous adhesive (HA). The investigation is performed on a particular in-plane tensile loaded single-lap joint made of identical aluminum adherends with two lines of fasteners and three various adhesive symmetrical graduation laws. The stress analysis is performed using the macro-element (ME) technique within 1D-bar framework. Moreover, closed-form expressions for the bolt load transfer rates and maximal adhesive stresses of balanced single-lap HBB joint with two identical fasteners are derived. It is shown that the FGAs allows fort a better load sharing between the adhesive and the fasteners than the HA. Moreover, the use of FGAs instead of HA could lead to a potential static strength benefit for the adhesive layer part rather than for the fastening part.

Item Type:Article
Additional Information:https://arc.aiaa.org/doi/10.2514/1.J058372
HAL Id:hal-02164341
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 - UT3 (FRANCE)
Laboratory name:
Deposited On:24 Jun 2019 14:08

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