huangyhg

beams with torsion
can anyone suggest a reference for design of structural tubes for flexure and torsion?
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aisc design guide 9 - torsional analysis of structural steel members

rc
all that is necessary for the triumph of evil is that good men do nothing.
edmund burke

does that include torsion on steel tubes or is it for w shapes only?
that's the real basis of my question.

section 4.4 - goes through the torsional stress on a closed shape.
section 4.6.2 - goes through the combined stresses from torsion and other loads on a closed shape.
there are also a few design examples.
example 5.2 does what you are looking for i believe.
rc
all that is necessary for the triumph of evil is that good men do nothing.
edmund burke

thank you.
you can actually use the specification itself for this. i don't have it in front of me, but it's relatively straightforward. and as you must also check the combined torsion, flexure and shear.
brezler, lin and scalzi "design of steel structures"
contains extensive information on torsion of tubular structures.
its an old book, but quite good in my opinion.
your question is a basic strength of material problem.
chicopee-
what exactly is the purpose of your comment?
it is arrogant and not the least bit helpful. true as it may be, it seems the only purpose is to make yourself look informed at the expense of the op.
and torsion, in general, is not an easy problem. in tubular sections, it is fairly straightforward, but for almost any other shape it is quite involved.
structural engineers have the added burden of taking many other factors into account. is the section torsionally restrained? is it compact? is there additional loading perpendicular to the cross section? in both directions?
you mechanical's may be able to design a circular shaft to transfer torque and forget about it. we don't have that luxury.
chicopee, your answer demonstrates that is that a little knowledge is a dangerous thing.

most structural engineers would tend to agree with frv and try to avoid torsion if at all possible. sometimes that may not be possible so we seek a reference to help us out.
with torsion some strength of materials books dont have exactly what we need so we seek a bit more as the op is doing.
perfectly understandable.

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