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Q&A PSI of an explosion

So as we know energy equals pressure times volume, therefore pressure equals energy divided by volume. The density of TNT is 1.65 and the energy per metric ton is 4.184 GJ. That makes 6.9036 GJ per...

1 answer  ·  posted 26d ago by CPlus‭  ·  last activity 26d ago by Olin Lathrop‭

Question pressure
#1: Initial revision by user avatar CPlus‭ · 2025-01-27T14:46:32Z (26 days ago)
PSI of an explosion
So as we know energy equals pressure times volume, therefore pressure equals energy divided by volume. The density of TNT is 1.65 and the energy per metric ton is 4.184 GJ. That makes 6.9036 GJ per cubic meter. Which coincidentally is a pressure / volume, where the pressure unit is a GJ per cubic meter, or a GPa. So the 'pressure' of a solid volume of TNT is our 6.9036 GPa, or about 1 million PSI.

Does this mean if you somehow constructed a container designed to withstand 1 million PSI, you could fill the container with TNT then detonate, and the container will **not** rupture? Or is the peak pressure of an explosion somehow **more** than the pressure obtained by the simple energy/volume calculation?