pressure profile design

[mielke]

this may be a dumb question for a M.E. but if you have a box and have an internal pressure of 100PSIG in the box. what is the pressure profile along one side of the box? would it be constant or sinusodal with respect to boundary conditions?

 

[MintJulep]

Imagine the light blue space that this reply is in is your box.

As far as you've told us, there is nothing other than pressure.

So, how could the pressure here be any different than the pressure ......................here?

 

[ione]

Pascal's law is what you need to get a grip on this

 

[rb1957]

i think you mean "what are the internal reactions ?" ...

start with Roark, you've got 6 flat plates, bending under pressure, with in-plane bi-axial tension loads (the reactions from the adjacent faces). At 100 psi, i suspect that very quickly the deflection of the panels will make this a large displacement problem, with the faces reacting the applied pressure as a membrane (like a balloon, in-plane tension) rather than as a plate in bending.

then ther's the question of fixity of the edges.