Ratcheting and recovery of adhesively bonded joints under tensile cyclic loading

Abstract Polymers in general, and adhesives particular, can exhibit nonlinear viscoelastic–viscoplastic response. Prior work has shown that this complex behavior be described using analytical models, which provided good agreement with measured creep recovery Under cyclic loading, however, some a temporal response different from what would expected their behavior. Ratcheting describes the accumulation of deformation loading. The failure surfaces subjected to loads provide evidence modes depend on loading history, suggesting cause for change following considers two approaches describe ratcheting adhesives. Given reduced time dependence, first approach involved viscoelastic–plastic model. second used model, calibrated response, rather than While both models showed experiment long exposure only model agreed short histories.