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A glass window under blast loading
Structural Vulnerability Assessment: Blast Analysis -Example Glass Window Blast
A glass window under blast loading
In this example a window is subjected to the impact of a moving object.
Structural Vulnerability Assessment: Impact Analysis -Example Glass Impact
In this example a window is subjected to the impact of a moving object.

Glazing System Analysis

A large portion of personal injuries resulting from the effects of an extreme external force on a structure are due to glass fragmentation. This makes external glazing critical to the safety of a building’s inhabitants and the protection of its contents when subjected to blast, wind-borne debris, impact, and other critical loads.  ASI can afford clients with a better understanding of the performance of a structure’s glazing during such events, allowing for more informed decisions on the options, upgrades and enhancements that will ultimately save lives and protect assets.

ASI’s Applied Element Method (AEM) based Extreme Loading® Technology (ELT) is the only analysis method on the market that can accurately analyze the behavior of glazing during impact and shattering.  ASI’s engineers are able to analyze and predict the failure modes, velocity, and final footprint of glass and its layers. Additionally, ASI can analyze prospective glazing systems prior to implementation.
Glazing System Analysis Includes:

  • Modeling and simulation of the scenario or scenarios involving potential or actual shattering.
  • Creating a model that can include window system, laminate, reinforcement, and glass thickness.
  • Generating technical reports detailing the results of the analysis and main conclusions.
  • Supporting 3D simulation videos and diagrams.

Building Glazing System Blast Vulnerability Assessment

ASI's client wanted to ensure the safety of the glass façade of a new office building in Khurasaniyah, Saudi Arabia. Based on hazard analysis, it was estimated that the glass façade of the building might be subjected to pressures as high as 0.4 psi. ASI was tasked with investigating the behavior of glass panels for the windows and doors when subjected to the effect of blast loading. Two types of glass panels were investigated: single-layer glass panels and three-layer laminated glass panels with an intermediate PVB layer.

The random nature of the cracks generated in glass required using an element mesh with a random nature. Therefore, the Voronoi diagram (Delaunay triangulation) was used for meshing the glass. The support conditions for the doors and the windows were carefully taken into consideration in the analysis.

Building Glazing System Blast Vulnerability Assessment