Abstract
The mechanical behavior of hybrid (bolted/bonded) joints applied to aeronautic structures is investigated. The joints under study are balanced single-lap joints, and an elastic behavior of the materials is assumed. A fully parametric analytical two-dimensional model, based on the finite element method, is presented. A special finite element, named beams element, is computed to simulate the bonded adherends. The method and the equations to obtain the stiffness matrix of this new element are presented in this paper. The simulation of fasteners is examined through experimental and numerical approaches. The bolt load transfer is measured by the use of specially instrumented bolts, whereas a finite element 3-D model is developed to calibrate the analytical model. Good agreement is found between the analytical, experimental, and numerical results.
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