Some of the inert gasses, such as krypton and, especially, xenon are very expensive. Yet, their thermal resistance is impressive and their optimal cavity thicknesses are small. Therefore, cavity volumes are minimal for such gasses. That helps to mitigate the cost. Dynamic Analysis Dynamic nonlinear stress analysis can be used to simulate the performance of glazing systems in dynamic events.
Dynamic simulations are complex.
Terminal ballistic events, in particular, are difficult to simulate. Properly conducted, however, the work is very cost effective. Simple computer programs are available which match applications with test data. For most applications, those provide the practical solution. Problem modal frequencies, however, are dimension dependent.