Thread: Torsional Stiffness of Extruded Aluminum
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Unread 18-01-2005, 22:28
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Re: Torsional Stiffness of Extruded Aluminum
I don't have the numbers but what i can tell you is that it should resist torsion.

A 1 sided piece of aluminum(flat bar) resists bending in one direction
A 2 sided piece of aluminum(L bar) resists bending in two directions.
A 3 sided piece of aluminum(U channel) resists bending in two directions and torsion.
A 4 sided piece of aluminum just does that better.

If you have a piece of each of those shapes you can try it. The difference is pretty obvious.
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