A non-linear hyperelastic foundation beam theory model for double cantilever beam tests with thick flexible adhesive

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:80

Article

Cabello, M.¹  Zurbitu, J.¹  Renart, J.²  Turon, A.²  Martinez, F.¹ 

[1] IK4 IKERLAN Technol Res Ctr, Arrasate Mondragn 20500, Gipuzkoa, Spain

[2] Univ Girona, Polytech Sch, Anal & Adv Mat Struct Design, Girona 17071, Spain

关键词: DCB;    Flexible adhesives;    Beam on elastic foundation;    Hyperelasticity;    Analytical model;   

DOI  :  10.1016/j.ijsolstr.2015.10.017

来源: Elsevier

【 摘 要 】

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. (C) 2015 Elsevier Ltd. All rights reserved.

【 授权许可】

Free