窓用ポリエステルフィルムを貼付したガラス板の衝撃破壊解析

抄録

There is a method of sticking a film on a glass plate to prevent the fragments from scattering when the glass plate fractures. This method is widely used because it can be used on existing glass plates simply. Prior research has shown that sticking a polymeric film to a glass plate not only prevents the shattering of the fragments at the time of fracture but also suppresses the crack propagation of the glass plate and improves the strength until fracturing starts. However, the mechanism for strengthening the impact resistance of the glass plate by applying a film has not been fully clarified. The purpose of this study is to elucidate the strengthening mechanism of the glass plate by applying the polymeric film by conducting impact fracture analysis of the glass plate attached by the finite element method. Therefore, we attempted to create a model with high reproducibility of the fracture process by simulating the impact test conducted in the previous research by numerical analysis. In addition, we compared the glass fracture process obtained by analysis and photoelasticity experiment. From the results of numerical analysis, the model was able to follow the strain up to the start of fracture due to the crack opening in the glass plate. However, it is thought that it is necessary to construct a new glass model in the low speed range because the simulation of the fracture mode is insufficient.