Study On The Dynamic Response Of Laminated Glass Subjected To Blast Load

Laminated Glass has been developed in China for more than half a century,starting mass production from the windshield of automobile industry and then gradually permeating to the construction industry.But in recent years,terrorist bombings and accidental explosions have occurred,while buildings that use glass curtainwalls in large areas have caused an additional number of casualties and property damage.Therefore,the anti-detonation performance of the glass curtain wall is attracting attention.The laminated glass with excellent performance should be studied.By establishing the finite element model of laminated glass,the dynamic response of laminated glass under explosive load is obtained,which is close to the experimental results.A numerical simulation test tool is provided.On this basis,a series of numerical simulation tests are carried out to study and analyze several factors that influence the anti-detonation performance of laminated glass.The main conclusions are:(1)the glass plate is the main force member of the laminated glass,and the increase of glass plate thickness can improve the anti-knock performance of the laminated glass.(2)the PVB material ACTS as a bond in the laminated glass and binds the broken pieces of glass together to prevent damage.Therefore,it is not obvious to increase the anti-knock performance of laminated glass by adding PVB thickness.(3)SGP material has higher yield strength,which can significantly improve the anti-detonation performance of laminated glass.The elastic modulus and shear modulus of transparent GFRP material are particularly high,which can improve the integrity of the laminated glass and improve its anti-detonation performance.