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Hoop Stress in Bending of Thin-Walled Tube?

Hoop Stress in Bending of Thin-Walled Tube?

Hoop Stress in Bending of Thin-Walled Tube?

(OP)
Greetings, can someone either direct me to a previous post (I've searched, but not found answers) or help simply answer the following?:

1) Do thin-walled tubes experience hoop stresses when subjected to bending? (tube is open at both ends - no pressure)

2) Are hoop stresses only present in sealed/closed structures subjected to internal or external pressure?

3) If hoop stresses are created during bending, how do I calculate these?

Thank you!

RE: Hoop Stress in Bending of Thin-Walled Tube?

tubes develop hoop stresses in reaction to pressure loads.

tubes in bending develop flugge (i think) stresses as the tube changes shape.

RE: Hoop Stress in Bending of Thin-Walled Tube?

(OP)
Thank you. As I research this more and more, I think really trying to understand the circumferential stresses that occur in the thin walls of a tube during bending when the tube has ovalized, then when the tube has buckled. Any help would be appreciated.

Thanks!

RE: Hoop Stress in Bending of Thin-Walled Tube?

google "flugge stress", get to NACA 2612. he starts with pressurised cyclinders and goes on to cyclinders in bending (by way of more math than i've seen in a while)

RE: Hoop Stress in Bending of Thin-Walled Tube?

(OP)
Wow, that was quite the find...thanks very much for your time.

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