Short duration pressure impulses
Short duration pressure impulses
(OP)
Anyone have any experience with short duration pressure impulses and the effects they have on steel enclosures? I'm trying to make a "scientific" connection between strain and pressure pulses of less than 1 ms duration. Empirically, a steel enclosure can withstand, without permanent deformation, a much higher pressure if the duration is sufficiently short. Any references (books, papers, websites....) you can direct me to?






RE: Short duration pressure impulses
RE: Short duration pressure impulses
To answer yoru question, we are looking at gas explosions inside steel enclosures for explosion-proof (flameproof) certification.
RE: Short duration pressure impulses
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: Short duration pressure impulses
Mike Halloran
Pembroke Pines, FL, USA
RE: Short duration pressure impulses
As for the explosion pulse, a lot of the force is attenuated based on volume and rebound compression of the air after the initial pulse. Since your pulse period is so short, it can be approximated like the impact of a falling object that has a short impact duration....i.e., the force is significantly reduced by the length of time that the impact occurs.
RE: Short duration pressure impulses
The Welding Research Council did a study on storage tanks, specifically trying to determine if the tops of the tanks would blow off before the shell pulled loose from the bottom. You might look into that kind of work and see how the pressures were modeled there.