hollow cylinders under high external pressure
hollow cylinders under high external pressure
(OP)
I try to design a hollow cylinder which can be used under high hydrostatic pressure, about 60Mpa.
But I cannot find any formulars for pressure vessels under external pressure.
Which property is the most important?
Buckle modulus? compressive strengh?
But I cannot find any formulars for pressure vessels under external pressure.
Which property is the most important?
Buckle modulus? compressive strengh?





RE: hollow cylinders under high external pressure
Have a look in ASME VIII or PD5500 they are codes for pressure vessels.
regards desertfox
RE: hollow cylinders under high external pressure
A lot of the pipe tables from vendors have the collapsing pressure.
If you need to accurately work to a certain pressure comeback with the restraints, including working media.
If you want a more detailed calculation or there are people or safety involved you should post a little more information as to size and use to get a more definitive direction such as those posted by desertfox.
http://www.rathmfg.com/collapsingpressure.htm
If there is any question at all please post it as there are well qualified people to steer you in the right direction.
RE: hollow cylinders under high external pressure
RE: hollow cylinders under high external pressure
the stiffness, strengh or buckle modulus?
RE: hollow cylinders under high external pressure
Depending on the diameter to length ratio buckling of your vessel might be the worst case, however you need to give dimensions of your vessel so that we can help you further and its application as requested by "unclesyd".
regards desertfox
RE: hollow cylinders under high external pressure
RE: hollow cylinders under high external pressure
CRG
RE: hollow cylinders under high external pressure
As stated above, the most critical geometric property is D/t ratio.