how to find pressure inside cylinder

@gsk-ssit-KY7Fvw • Oct 21, 2024

Oct 21, 2024

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Two cylinders are press fitted together to form a composite closed cylinder .The outter cylinder is made of steel E=200Gpa,poissions ratio=0.29 and yeild strength 1990mpa and inner cylinder is brittle material with E=200Gpa poissions ratio=0.3,ultimate strength=3100mpa.The inner and outter radii of inner cylinder is 10mm and 20mm and outter and inner radii of outter cylinder is 20mm and 95 mm.Determine the pressure inside the cylinder, prove that design is safe considering factor of safety

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ISHAN TOPRE

@ishan-nohePN • Apr 22, 2011

The problem lies to combine both cylinders. Can we consider a equivalent cylinder which can replace both of them? It would simplify the matter. What say?

By the way read this. It is pretty useful. The formulas are actually universal.

<a href="https://www.scribd.com/doc/29527771/Intro-to-Pressure-Vessel" target="_blank" rel="nofollow noopener noreferrer">Intro To Pressure Vessel | PDF | Construction | Welding</a>

If you still have a problem then we can discuss the problem 😀
gsk_ssit

@gsk-ssit-KY7Fvw • Apr 23, 2011

no pressure vessel design wont solve my problem here i need to take this as a thick walled compound cylinder
Ramani Aswath

@ramani-VR4O43 • Apr 30, 2011

gsk_ssit
no pressure vessel design wont solve my problem here i need to take this as a thick walled compound cylinder
Something does not gel. If the OD of the inner cylinder = 20 mm and the ID of the outer cylinder is also = 20 mm, there can be no press fit. There will be no press fit induced stress in either cylinder. The ID of the outer cylinder must be smaller than the OD of the inner one for press fitting The percentage interference and the mechanical properties of the two materials will then dictate the hoop stresses.

Bioramani
gsk_ssit

@gsk-ssit-KY7Fvw • May 3, 2011

This reply shows that you dint get my question please go thru once
Ramani Aswath

@ramani-VR4O43 • May 3, 2011

gsk_ssit
This reply shows that you dint get my question please go thru once
Press fitting is a process in which a larger dia cylinder is 'pressed' into a smaller dia cylinder. In the data given the two diameters are equal at 20 mm. Theoretically there will be no pressure.

Bioramani