Abstract
The deformation and strength of single lap joints having adherends of dissimilar materials were investigated both analytically and experimentally. The strain distributions under tensile shear loads of the joints of carbon steel and aluminum alloy bonded with epoxy resin were analyzed using the finite element method. The analytical result was shown to coincide approximately with the experimental one. The analyzed strength was less than the experimental one probably because the former predicted the initial cracking loads whereas the latter predicted the fracturing loads which were different from the former. Young's moduli of adherends and the adhesive length had great effect on the joint strength. The strength of joints of carbon steel and aluminum alloy had valued intermediate between the strengths of joints having carbon steel adherends and aluminum alloy adherends. The curing process of the adhesive resin improved the joint strength overcoming the difference in thermal properties of the adherends.
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