Diagonal tension of rectangular plate with a central unstiffened hole
Diagonal tension of rectangular plate with a central unstiffened hole
(OP)
Hi,
Can anybody help me to find some information on diagonal tension analysis of a rectangular plate with a central unstiffened hole(s).
Can anybody help me to find some information on diagonal tension analysis of a rectangular plate with a central unstiffened hole(s).






RE: Diagonal tension of rectangular plate with a central unstiffened hole
Gide to Stability Design Criteria for Metal Structures 4th edition
edited by Theodore V. Galambos
around p.115
The same, 5th edition, around p. 151
I once posted some worksheets doing this tasks and other related to web openings but are not available anymore since it seems was against the forum policy.
Best wishes
RE: Diagonal tension of rectangular plate with a central unstiffened hole
RE: Diagonal tension of rectangular plate with a central unstiffened hole
This opens the book right more or less where wanted.
Respect the availability of the worksheets (Mathcad's) I think I posted most of them at the Collaboratory of Mathcad 2000, but I think presently public access to such site is not public anymore after Mathsoft's purchase by PTC.
I may however give a try to your specific case and see how well it fits the worksheets and see what are the results, and comment.
Those not based in Galambos' I think I based on a pair of articles on AISC's web openings steel design guide 2, 1st edition, which must be readily available.
RE: Diagonal tension of rectangular plate with a central unstiffened hole
Let me know if this is enough info.
Regards,
Steven
RE: Diagonal tension of rectangular plate with a central unstiffened hole
With just the 4 sides supported that would give (for the long rectangle having the circles within and 200 mm between centers) a 3.95 check where we would need to have at much 1.
We are not done. Since the procedure to get the applicable critical shear stress with holes is a function of that without holes by the Galambos' quoted formulation, we may still find such stress with your proper constraints looking elsewhere; I will.
Also, some 3D model able to enter in the postbuckling strength would give the thing; those elastic, not as you pretend. Let's continue looking.
We may have
RE: Diagonal tension of rectangular plate with a central unstiffened hole
To answer your questions, I have already obtained the shear buckling allowable with centre unstiffened holes using Fokker TH3.906. You are right, the applied shear stress is 83.3 N/mm^2. So it is clear that the panel should buckle under these conditions.
My question is:
What analysis can be done now to determine how the shear is distributed to the surrounding structure and whether diagonal tension analysis as per Bruhn is in fact applicable. I do not understand what you mean by 3.95 check, but I have not gone through Galambos yet.
Definitely FE analysis should be done.
RE: Diagonal tension of rectangular plate with a central unstiffened hole
After reviewing somewhat the book and papers I have (UBC on aluminum, plate buckling os naval structures and eurocode steel for buildings between them) I don't find readily nor a case with your constraints, less the exact kind of geometry, then I also think that if available a FEM analysis will be the more sound approach.