Dynamic Deformation of Tapered Lap Adhesive Joint under Impact Loading

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  • Dynamic Deformation of Tapered Lap Adhe

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The propagation of stress waves and the concentration of dynamic stress in tapered lap adhesive joints with impact loading were investigated analytically and experimentally. Stress distribution and time variation of stress and strain in the joints under tensile impact loading were calculated using FEM, considering viscoelastic properties of the adhesive resin. Impact tests on the adhesive joints of aluminum alloy were conducted. Calculated results agreed with experimental results. The effects of taper length on the concentration of stress and strain were examined by comparing the calculated results with the experimental results. An increase in taper length is an effective way to reduce the concentration of stress and strain in adhesive lap joints under impact loading.

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