Numerical Modeling Mechanical Delamination in Laminated Glass by XFEM

This paper deals with the three-dimensional modeling of laminated glass failure due to delamination of the glass. The extended finite element method is used here (XFEM) to input discontinuity to the approximation field. The regarded glass consists of two outer glass plies and thin inner layer of the polyvinyl butyral (PVB). The PVB inner layer is very thin in comparison to the laminated glass thickness. That is why in the model, presented in this paper, the PVB layer is not spatially discretized. However, the inner layer exists in the problem formulation. The constitutive law for PVB is written with the help of two dimensional inner layer traction vector. Finally it results in three-dimensional effective numerical model for delamination analysis. The model is illustrated with an example.