Failure Mode of Framed Polyvinyl-Butyral-Laminated Glass Subjected to Blast Loading

Abstract:

In this paper， a systematic study on the failure mode of framed PVB laminated glass， which is commonly used in practical engineering， is conducted based on dynamic nonlinear finite element analysis and field blast test. First， a fine finite element model for simulating framed PVB laminated glass subjected to blast loading is developed using LS-DYNA. Based on numerical analysis， three different failure modes， i.e. global failure， local （punching） failure， and mixed failure， are identified for framed PVB laminated glass in different explosions. The failure mode is found to be dependent on the residual energy ratio of the laminated glass at PVB rupture. Furthermore， the identified failure modes are verified by a series of field blast tests. The results of this study can provide reference for practical engineering blast resistant design of framed PVB laminated glass curtain wall.