non-symmetric beam theory
non-symmetric beam theory
(OP)
Howdy Y'all,
I'm wondering if basic beam theory still applies to x-sections that are not-symmetric across their centerlines. Say, like a c-channel on its side or a right angle bracket. It seems to me that if the load is not going through the centroid of the x-section it will induce a twisting moment in the beam. Is this torsion generally factored in for these types of beams? If so, is it simply calculated by the distance of the applied load to the centroid of the section for the T*r/J shear stress?
Thanks for spreading the knowledge,
---> Karl
I'm wondering if basic beam theory still applies to x-sections that are not-symmetric across their centerlines. Say, like a c-channel on its side or a right angle bracket. It seems to me that if the load is not going through the centroid of the x-section it will induce a twisting moment in the beam. Is this torsion generally factored in for these types of beams? If so, is it simply calculated by the distance of the applied load to the centroid of the section for the T*r/J shear stress?
Thanks for spreading the knowledge,
---> Karl





RE: non-symmetric beam theory
Cheers
Greg Locock
SIG:Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.
RE: non-symmetric beam theory
Cheers
Greg Locock
SIG:Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.
RE: non-symmetric beam theory
Cheers
Greg Locock
SIG:Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.
RE: non-symmetric beam theory
RE: non-symmetric beam theory
RE: non-symmetric beam theory
RE: non-symmetric beam theory
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RE: non-symmetric beam theory
RE: non-symmetric beam theory
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RE: non-symmetric beam theory
Excellent explanation.
RE: non-symmetric beam theory
However, my main concern is the theoretical maximum stress in the beam. Do you approach this in the same manner as a symmetric beam? The literature I am looking at deals with the shear stresses at the neutral axis and the torsion induced by the load. But, I believe the main design criteria is still governed by Stress = MC/I, with the highest stresses the farthest away from the centroid.
Any thoughts on this point?
Thanks for the additional help,
---> Karl
RE: non-symmetric beam theory
If you "heard" it on the internet, it's guilty until proven innocent. - DCS
http://www.eng-tips.com/supportus.cfm