Dr.-Ing. Matthias Förch (director of Werner Sobek Hamburg) has published an interesting study of laminated glass in the “International Journal of Structural Glass and Advanced Materials Research”. The article, which is worth reading, can be downloaded free of charge from the following link: https://thescipub.com/pdf/10.3844/sgamrsp.2020.69.81.pdf
”Time-Temperature Dependency of Laminated Glass Subjected to Blast Load – A Numerical Study”
The behavior of laminated glass has strong time-temperature dependency. Viscoelastic material models are often employed to define mechanical properties of Polyvinyl Butyral (PVB), the most common interlayer for structural glass applications. However, it is an apparent notion to simplify the high complexity of such material models, as only specific software is capable of considering this behavior. Most studies in blast design of laminated glass have focused on room temperature condition and recommend the use of elastic material models for PVB with high modulus of elasticity for simplification. The main purpose of this study is to develop an understanding of time and temperature dependency of interlayers in real building application.