Blast Loads/Pressures
Blast Loads/Pressures
(OP)
Hey all - I am looking over some design information provided as a preliminary phase of a project. Part of the design requirements is blast resistance. Some initial blast analysis has been done and the incident and reflected pressures are stated/provided. Can someone explain to me what I'm looking at with these pressures? I'm assuming that they are not the applied pressures.
I need to know what the applied pressures are. How do I get them from these values?
Thanks
I need to know what the applied pressures are. How do I get them from these values?
Thanks






RE: Blast Loads/Pressures
RE: Blast Loads/Pressures
RE: Blast Loads/Pressures
RE: Blast Loads/Pressures
Is this a job that follows the UFC?
RE: Blast Loads/Pressures
These were determined using a blast analysis program. What I don't know is how to convert to applied pressure on the walls of the structure. Thanks
RE: Blast Loads/Pressures
The gunfire overpressure levels shall be a 20psi, 4.0msec duration, triangular pulse.
that's what's applied to your system.
TTFN
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RE: Blast Loads/Pressures
There are some blast analysis programs that give equivalent static loads, such as equivalent static reactions of glass against a window frame. If your element goes plastic, such as after the glass breaks and the laminate takes over, I think the equivalent static reactions become less relavant. Also, I don't know if there are any programs which will give you an equivalent static load for a whole structure. I don't think these things scale too well.
Can you not perform a dynamic analysis on your structure? When your dealing with blast loads, member response is definately dynamic.
RE: Blast Loads/Pressures
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RE: Blast Loads/Pressures
FYI, you probably won't be able to do the SDOF analysis by hand.