Elasto-plastic analysis of bonded joints with macro-elements

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[1] Paroissien, E.
[2] Gaubert, F.
[3] Da Veiga, A.
[4] Lachaud, F.
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Paroissien, E. (eric.paroissien@sogeti.com) | 1600年 / Taylor and Francis Ltd.卷 / 27期
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The Finite Element (FE) method could be able to address the stress analysis of bonded joints. Nevertheless; analyses based on FE models are mainly computationally cost expensive and it would be profitable to develop simplified approaches; enabling extensive parametric studies. Firstly; a one-dimensional 1D-bar and 1D-beam simplified models for the bonded joint stress analysis; assuming a linear elastic adhesive material; are presented. These models derive from an approach; inspired by the FE method using a formulation based on a four-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 then presented to introduce into both models an elasto-plastic adhesive material behavior; while keeping the previous linear elastic formulation. Finally; assuming an elastic perfectly plastic adhesive material behavior; the results produced by simplified models are compared with the results predicted by FE using 1Dbar; plane stress; and three-dimensional (3D) models. Good agreements are shown. © 2012 Taylor & Francis;
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