Fractional viscoelastic characterization of laminated glass

Abstract. Glass façades are often required to withstand against explosive events due premeditated or accidental causes. Laminates made by glass plies bonded thin polymeric foils (laminated glass) need be used avoid catastrophic breakage. The paradigmatic case study considered is that of a rectangular three-layer laminate, two plies, modelled as Kirchhoff-Love plates, sandwiching viscoelastic interlayer. Its time-dependent response under the action blast wave described via fractional calculus operators, whose main advantage only material constants needed for an exhaustive characterization. dynamic equations treated à la Galёrkin and their integration in time relies on Grünwald-Letnikov approach. characterization presents noteworthy advantages from computational point view. We find maximum stress peak mildly affected viscosity interlayer, which instead dictates subsequent rebounding oscillations.