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Rd tube vs. Sq tube torsion
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Posted by: ck

06/26/2010, 01:56:12

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I am designing a trailer frame and would like to know if I attatch a gooseneck style hitch to a cross member that spans across the front of the frame, if I would be better off using a round tube or square tube, based on torsion flex. The hitch would attatch to the center of the tube and the tube is welded on the ends to the side frame rails. I think that a round tube might handle the torque applied and be less likely to crack the welds vs. using a square tube. Can anyone confirm this.
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: Rd tube vs. Sq tube torsion
: Rd tube vs. Sq tube torsion -- ck
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Mechanical Engineering Forum
Posted by: egsindia

07/04/2010, 22:48:59

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Hello:

Stress concentrations in square tube would probably be higher on account of sudden change in shear flow direction vis-a-vis round cross section. Round cross section would be the first choice of approach since it would result in a self-equilibrating configuration, especially under torsion.

Regards
Natarajan R
EGS India, Chennai








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