Temperature dependent flexural stiffness of load bearing laminated glass panes

Abstract

Load bearing glasses are used not only in interior but also in exterior applications. The flexural stiffness of laminated glass is influenced by temperature. With increasing temperature the shear stiffness rapidly decreases and creep becomes more significant (Krüger, 1998). According to Wölfel´s (1987) calculations, the shear modulus of the interlayer material has the most influence on the strength and deflection. In the case of thin or large size glasses, where the deformations (deflections) are considerable, temperature dependent flexural stiffness of the overall laminate is more significant. This paper deals with the influence of temperature on flexural stiffness of laminated glasses. Based on the laboratory results, the Author modified the definition of the coupling parameter, which represents the bond of the glass layers by the interlayer and was originally defined by Krüger (1998).