Kink Brace Out-of-Plane Buckling Stability
Kink Brace Out-of-Plane Buckling Stability
(OP)
For a kinked brace, the out-of-plane buckling stiffness is obviously less than if the member is straight. My question is: how much less?
Intuitively, it seems that it is even less than the KL/r using the length of the two segments added together. You are losing strong axis buckling resistance in the brace at the kink - but again, how much? I would think this stiffness would reduce rapidly as the angle of the kink grew.
Please see the attached sketch for a visual. Note that the brace is kinked to begin with (to clear mechanical equipment), not due to the load.
Any guidance would be appreciated...
Intuitively, it seems that it is even less than the KL/r using the length of the two segments added together. You are losing strong axis buckling resistance in the brace at the kink - but again, how much? I would think this stiffness would reduce rapidly as the angle of the kink grew.
Please see the attached sketch for a visual. Note that the brace is kinked to begin with (to clear mechanical equipment), not due to the load.
Any guidance would be appreciated...
-5^2 = -25 ![]()
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RE: Kink Brace Out-of-Plane Buckling Stability
RE: Kink Brace Out-of-Plane Buckling Stability
Like JAE I am wondering if there is out-of-plane bracing at that intersection. Without it, my idea may not work.
RE: Kink Brace Out-of-Plane Buckling Stability
a2mfk - Yes, the upper right member will take compression - that's what it's there for. No, there is no out-of-plane bracing which is why the member is rotated so that the strong axis faces that way.
PS: The "C" on each member was just indicating that they are all in compression - understandably elementary for this forum.
-5^2 = -25
http://www.eng-tips.com/supportus.cfm