A non-linear hyperelastic foundation beam theory model for double cantilever beam tests with thick flexible adhesive. (February 2016)

• Record Type: Journal Article
• Authors: Cabello, M.; Zurbitu, J.; Renart, J.; Turon, A.; Martínez, F.
• Is Part Of: International journal of solids and structures. Volume 80(2016)
• Page Start: 19
• Page End: 27
• Publication Date: 2016-02
• Subjects: DCB -- Flexible adhesives -- Beam on elastic foundation -- Hyperelasticity -- Analytical model; Mechanics, Applied -- Periodicals; Structural analysis (Engineering) -- Periodicals; Elastic solids -- Periodicals; Mécanique appliquée -- Périodiques; Constructions, Théorie des -- Périodiques; Solides élastiques -- Périodiques; Elastic solids; Mechanics, Applied; Structural analysis (Engineering); Periodicals; 624.18
• DOI: 10.1016/j.ijsolstr.2015.10.017
• Languages: English
• ISSNs: 0020-7683

Abstract

Abstract: Flexible adhesive joints, with adhesives of very low elastic modulus and very large failure deformation, are of special interest in industrial applications. Nevertheless, there is a lack of effective models for predicting their behaviour for structural applications. Existing methods developed for stiff compressible adhesives are not able to accurately capture the nonlinearities present on a thick flexible bondline. This paper presents a new analytical model for the simulation of a flexible adhesive bonded joint in a double cantilever beam (DCB) setup. Using the concepts of elastic foundation beam theory and developing them for a more general non-linear hyperelastic foundation case, a semi-analytical model is proposed. The effectiveness of the model, with respect to other approaches shown in the literature, is compared against experimental results for Krafft's flexible adhesive SILKRON POLYMER H-100. The hyperelastic foundation model accurately predicts the load-displacement response of the adhesive.