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Buckling of Triangular Plates 2

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TDI

Aerospace
May 19, 2003
11
GB
I have a shear panel which approximates a triangle in shape, height a, base b. I want to find the critical shear buckling stress.
I have some buckling curves for rectangular panels in shear but I think if I idealise my triangular panel as a rectangular panel of dimensions a and b then that will give me a very conservative result.
I seem to recall a method of idealising the triangular panel as a rectangular panel of dimensions 0.67a and 0.67b ie a smaller rectangle, and then using the buckling curves for a rectangular panel to estimate my buckling stress.
Can anyone suggest a better method?
 
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Could you elaborate on how the panel is being loaded? I keep picturing your structure looks like a gusset, or a covered truss. Is that right?


Steven Fahey, CET
 
Use a finite element model, with carefully selected boundary conditions and applied loads.
 
I doubt you actually have a triangular shear panel. Have you tried putting shear flows on the edges and achieving translational and rotational balance?
 
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