Analysis of dynamics of laminated glass composite panels with different glass curvature under impact loading

The article presents the results of the analysis of shallow shell laminated glass composites dynamic state under impact loading. The study considers modelling of a smooth steel ball drop on laminated glass with different curvature of laminate. The work includes modelling the composite in a three-dimensional setting as part of a physical linear-elastic state. The interaction of the ball and the laminate was carried out in the framework of solving the problem of one-way contact by the "surface to surface" (STS) algorithm. The resistance caused by air during impact was neglected. The aim of the work is to study the dependence of laminated glass dynamic deformation on the composite curvature. The article carries out modelling of behavior of the laminated glass samples with PVB interlayer using transient analysis. The study performs computations using a finite element method (FEM) using hexagonal FE with 8 nodes with 3 degrees of freedom in each within a 3D modelling and explicit dynamics approach in modern computer-aided engineering (CAE) software. The investigation includes a mesh-size convergence analysis. The work carries out the dynamic strain and stress state analysis in laminated glass with different parameters of laminate curvature, derives the results of deformation and strain in characteristic points at different time moments, plots the dependence graphs of deformation and strain on the parameter of glass curvature.