Localized Buckling of a built-up shape
Localized Buckling of a built-up shape
(OP)
I’ve been asked to look at an angle that is made up of two plates [each 1.25”x20”] welded together. For the purposes of calculating allowable stresses, I am checking it by the 13th edition (of AISC). One thing that concerns me though: is this code even applicable? You look at the largest angle in the manual and it’s about an 8”.
So [to start off with] you check localized buckling by the values in Table B4.1 and it exceeds the compact limit but not the noncompact limit....but you wonder: is this applicable? Is there some other buckling mode outside the scope of this manual that may control? Thoughts?
So [to start off with] you check localized buckling by the values in Table B4.1 and it exceeds the compact limit but not the noncompact limit....but you wonder: is this applicable? Is there some other buckling mode outside the scope of this manual that may control? Thoughts?






RE: Localized Buckling of a built-up shape
RE: Localized Buckling of a built-up shape
RE: Localized Buckling of a built-up shape
RE: Localized Buckling of a built-up shape
RE: Localized Buckling of a built-up shape
Look at such texts as:
** “Guide to Stability Design Criteria for Metal Structures,” 3rd. Ed., Edited by Bruce G. Johnson. I believe this has several later eds. and is now edited by T.V. Galambos, pub. by Wiley.
** “Buckling Strength of Metal Structures,” by Friedrich Bleich, pub. by McGraw-Hill.
** “Theory of Elastic Stabilty,” by S.P. Timoshenko and J.M. Gere, pub. by McGraw-Hill.
** “Theory of Elasticity,” by S.P. Timoshenko and J.N. Goodier, pub. by McGraw-Hill.
** and many others.
rb was asking for enough pertinent engineering info. so we could really visualize and understand the problem. What are the loads, is it 2' long or 20' long? What are the loads, and how is it loaded? What are the end conditions, any bracing? All info. needed to start to solve your problem.
RE: Localized Buckling of a built-up shape
The situation (in its entirety) is a bit long to lay out…..the aspect of it that worried me is what I posted…..the rest is fairly straight forward. I went ahead and treated it by the 13th edition…....which seems appropriate. I have some of the references you cited on the shelf but I thought I’d ask here on the off chance someone had run into this themselves and felt one code was more applicable to this than another.
Thanks to all who replied.