Bending a pipe
Bending a pipe
(OP)
If you are bending a pipe similiar to this picture:
http:// image.shut terstock.c om/display _pic_with_ logo/85366 /85366,124 6641681,4/ stock-vect or-illustr ation-of-a -powerful- man-bendin g-a-rod-33 069904.jpg
Do you still analyze it as a cantilever beam held on both ends?
I would assume you would use stress for a bending beam:
Stress=M*y/I
where y=diameter/2, I=pi*d^4/64, and M is the moment of the force to the middle. Is this correct?
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Do you still analyze it as a cantilever beam held on both ends?
I would assume you would use stress for a bending beam:
Stress=M*y/I
where y=diameter/2, I=pi*d^4/64, and M is the moment of the force to the middle. Is this correct?





RE: Bending a pipe
RE: Bending a pipe
This stress will be before any plastic deformation occurs. Thanks for the help.
RE: Bending a pipe
I'd say your beam is a case of a free beam with equal and opposite applied bending moments, not a cantilever.
RE: Bending a pipe
RE: Bending a pipe
because of symmetry, the bar is cantilevered at the CL and loaded at the end.
trick question, how is it loaded ? force or moment ??
RE: Bending a pipe
You're right on the cantilever approach, if you split the pipe in half, as you said. Interesting because I wouldn't have thought to solve it like that.
RE: Bending a pipe
RE: Bending a pipe
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A theory of elasticity book might give you a more detailed explanation.
RE: Bending a pipe
RE: Bending a pipe
Of course, the guy could be applying an axial load as well, which would have to be accounted for...
Useful link: h