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A new general analytical model based on elastic foundation beam theory is proposed for adhesively bonded double cantilever beam (DCB) specimens. The new model accounts for any stress state (from plane stress to plane strain) in the adhesive and therefore, the model is able to predict the mechanical response of a DCB specimens whatever the adhesive type (from rigid to flexible), the stress state, and the width/thickness relationship of the specimen are. The model is validated with DCB tests for flexible Silkron-H100 and stiff Araldite-2021 adhesives. A comparison with other models from the literature demonstrates that more accurate predictions in terms of stress distribution in the middle plane of the adhesive layer, adherend deflections and load predictions are obtained. The model is especially suitable when flexible adhesives and/or thick adhesives are used. In addition, a new method to accurately obtain Poisson's ratio for flexible adhesives is proposedThe authors gratefully acknowledge the financial support of the Spanish government through DGICYT under Contract No. TRA2015- 71491-

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a b s t r a c tSuperelastic cyclic behavior of NiTi wires was studied by cyclically deforming several samples at impact strain rates on the order of 10 s −1 , using an instrumented tensile-impact device. The stress-strain cycles were performed up to different maximum strain ratios in order to study the cyclic impact fatigue for the incomplete, complete stress-induced martensitic transformation, and for the elastoplastic deformation of the martensitic phase. Impact results show that the stress-induced martensitic transformation stresses decrease with the number of cycles, although this decrease is lower than that obtained in cycling fatigue experiments performed at low strain rates. This suggests that the increment of the dislocation density, responsible for the stress reduction, depends on the strain rate applied during deformation. Moreover, the near-adiabatic condition fulfilled when deforming at high strain rates, promoting higher stress-induced martensitic transformation stresses during cycling at impact than the ones reached at low strain rates. In addition, the dissipated energy per cycle is also affected by the strain rate, being at impact 10-15% lower than the values obtained when the deformation occurs in isothermal conditions, that is at strain rates lower than 10 −4 s −1 .