The effects of high strain-rate and in-plane restraint on the quasi-static blast response of laminated glass: a theoretical study

The recently escalated explosion incidents from terrorist attacks have intensified the requirement for blast resilient buildings. As a result, glazed facades of commercial and residential buildings often include laminated glass panels that are more ductile and can prevent fragmentation injuries from occurring. However, the response of laminated glass panels to blast loads, especially the post-fracture response, is a complicated multi-disciplinary topic that has recently attracted significant research efforts. The residual bending capacity of cracked laminated glass panels under high strain-rates will be investigated in this paper. This will include the assessment of the composite bending response of the interlayer in tension and the compressive stresses resulting from the attached glass fragments. The formation of plastic hinges in cracked laminated glass panels will be examined and the effects of high strain-rates developed under blast loads to the viscoelastic interlayer will be considered. Finally, the relative contribution of bending and membrane action will be assessed.