AFFDL-TR-67-184 BOLTED JOINT PAPER?

[LIstress]

Does anyone know how I can get the copy of this paper (Analytical Design Methods for Aircraft Structural Joints) by W. McCombs (Bruhn co-author), with his "corrections and added comments"? I can get the paper itself easily enough from DTIC, but I'd prefer the one with McCombs' aforementioned additions, and since he's deceased I can't contact him about it. It was discussed by edbgtr in thread2-14792. Edbgtr, are you out there? Anyone?

 

[rb1957]

i think you're asking about two different papers.

the AFFDL sounds like ('cause i haven't dug it out) and analysis procedure for bolted joints.

McCombs also wrote a "A Supplement to Bruhn, for increased scope and usefullness", which contains corrections and additions. This was available only through McCombs, who as you note (respectfully) is uncontactable. His address was 2106 Siesta Dr Dallas TX 75224, phone (214) 337-5506.

 

[LIstress]

Mr. McCombs is the author of both the supplement and the paper. In fact, it's in the supplement that he recommends the reader contact him at the Dallas address for a copy of the paper with his own additions and corrections. I googled and confirmed that McCombs is co-author of the original paper, which I can get from DTIC; I'd really like a copy (or pdf preferably) of the one with McCombs revisions.

Thanks.

 

[edbgtr]

Hello LIstress

I do have a copy of a commented version of the late Bill McCombs' joint paper you refer to. However, I have not scanned it all in and do not have a complete copy of it in PDF format. I've scanned a subset of the report, i.e. pp 139-146 as that was all I needed at the time I used it. Amongst that work on my laptop I also have a copy of NACA-TN-1458 on the same topic, which you can retrieve from the NASA or Cranfield websites, you'll need to dig a little there to get it.

Essentially Bill's work was done before the advent of FEA joint analysis or home-grown spreadsheet joint solutions. You can solve the problem yourself, using Niu's fastener stiffness coefficients (or similar) by setting up the equilibrium equations at each fastener and then solving the set of equations using the Excel built-in Solver routine. This also works very well and saves the hassle of building an FE model each time.

Regards

Ed