Simulation of the response of glass window under blast load

In the investigation of accidental explosion scene, the damage on the glass is one of the typical traces which can be used to decide the characteristic of the explosion source. To analyze the response of glass under the blast load, a numerical model was developed. In the model, the brittleness glass model was adopted. A 'node release' method, which had some special merits compared with the erosion method was used to simulate the rupture of the glass In the calculation, several problems which play major role in the response of the glass were discussed. The velocity and the displacement of the glass fragment were two major factors. The numerical results are very helpful for the design and hazard assessment.