If you are going to machine the hub from 7075 T6 you should use some care. I just checked in MMPDS table 3.1.2.3.1(a) for rolled plate and T6 gets a "D" stress-corrosion rating in the ST direction which means practically any sustained stress at all will cause cracking in that direction. If it is...
@blackmax: Is there a typo in the TN number you gave? Instead of DOT/FAA/AR TN-06/07 should it be TN-06/57 "Best Practice in Adhesive-Bonded Structures and Repairs"?
Some observations. Not to split hairs, but Hart-Smith's philosophy of ensuring that the bond itself is not critical in a bonded...
I managed to locate the BJSFM source code, see attached. I can't vouch for it's provenance, the modification date on the file is 1991.http://files.engineering.com/getfile.aspx?folder=2cb79806-7bfc-4809-a490-c4a1e029f8c5&file=BJSFM.FOR
Talking about A4EI J & K, the source for them is in AFWAL-TR-81-3154 Vol II. Unfortunately Vol II can't be had from DTIC, only Vol I. This is curious because MIL-HDBK-17 Vol 3 Ref. 5.2.1(u) points at 3154 Vol II without specifying that it appears unavailable. Further evidence that the code for...
In Femap 10 at least you can create a freebody of the stiffener elements and nodes and display the forces that act on it.
When you do the run you have to request the grid point balance (Femap just calls it the Force Balance in the output requests of the analysis).
Then using layers show only...
The note on the Lockheed graphs says "The ultimate load P is defined as 1.5 times the load at 0.005 inch permanent set."
If you accept the Lockheed definition of limit allowable being that which gives 0.005" permanent offset then Lockheed gives you the limit capability (just divide by 1.5). So...
