How to get BJSFM, A4EI, A4EJ, etc?
How to get BJSFM, A4EI, A4EJ, etc?
(OP)
I have been trying to track down some of the old codes developed under air force contract, which are public domain for US citizens.
The problem is that they outsourced the "storage" of these codes to a 3rd party and the contract to store them has expired. I contacted the company that used to store them, but they (a) could not find the code and (b) were not sure how to disseminate it even if they could.
There are a lot of other useful programs as well, but I am mostly interested in BJSFM for validation purposes. Any ideas?
The problem is that they outsourced the "storage" of these codes to a 3rd party and the contract to store them has expired. I contacted the company that used to store them, but they (a) could not find the code and (b) were not sure how to disseminate it even if they could.
There are a lot of other useful programs as well, but I am mostly interested in BJSFM for validation purposes. Any ideas?





RE: How to get BJSFM, A4EI, A4EJ, etc?
RE: How to get BJSFM, A4EI, A4EJ, etc?
Brian
www.espcomposites.com
RE: How to get BJSFM, A4EI, A4EJ, etc?
Of course using 3154 Vol I it's possible to roll your own code. That's been in the back of my mind for a while, I'm just waiting to get the right summer student. Also I have a colleague who was on the MIL-HDBK-17 committee, he's going to look through his stuff to see if he has Vol II and if it's release unlimited.
Finally, my colleague suggested I contact John Hart-Smith directly, I'm saving that as a final option. I'll post back if I find anything.
RE: How to get BJSFM, A4EI, A4EJ, etc?
The greater problem for me is that there are also other codes there that I would find useful.
Ultimately, I do plan on making my own code in Excel, a much more modern and user friendly environment (my opinion). But to have a baseline is of tremendous importance and great time saver.
Brian
www.espcomposites.com
RE: How to get BJSFM, A4EI, A4EJ, etc?
RE: How to get BJSFM, A4EI, A4EJ, etc?
Brian
www.espcomposites.com
RE: How to get BJSFM, A4EI, A4EJ, etc?
Brian
www.espcomposites.com
RE: How to get BJSFM, A4EI, A4EJ, etc?
RE: How to get BJSFM, A4EI, A4EJ, etc?
Brian
www.espcomposites.com
RE: How to get BJSFM, A4EI, A4EJ, etc?
I never programmed in Fortran and I have a question: To use the Fortran file posted above do I need to install intel compiler (for example)? Version 11 runs it? Is it a straight forward task to run the mentioned file?
Thank you for your time and attention! Good work!
RE: How to get BJSFM, A4EI, A4EJ, etc?
BJSFM uses and infinite plate Lekhnitskii solution to the open hole and superimposes it with a bearing solution.
You can validate the pure bypass (zero bearing) solution with eCutout,
http://www.espcomposites.com/software/eCutout.html
I have a FEM based bearing-bypass solution that is near completion and should have a BJSFM solution in the "short term", but nothing right now.
Brian
www.espcomposites.com
RE: How to get BJSFM, A4EI, A4EJ, etc?
I studied Garbo & Ogonowski method but my problem is concerned now to getting a compiler that runs the BJSFM.FOR file posted above to compare the results given by that code with my results from Matlab! I tried Intel compiler but it requires sdk tools (?!) and I can't install it. GNU compiler is giving me errors probably because of the fortran version! Is the BJSFM.FOR file above made in fortran 77, 90 or 95? What compliler allows me to read the file! Can you give me a suggestion?
Thank you for your time and attention, and good work!
RE: How to get BJSFM, A4EI, A4EJ, etc?
I also have a parametric Excel FEM solution that is 90% complete. It correlates pretty well to uniaxial tension solutions found via BJSFM, but allows for a more arbitrary solution. BJSFM cannot determine how the bearing load is reacted (i.e. if it reacted in compression, tension, or shear). The FEM solution should be an improvement from what BJSFM is capable of.
Brian
www.espcomposites.com
RE: How to get BJSFM, A4EI, A4EJ, etc?
Do you think you can send me the BJSFM.FOR version you are using and tell me in which compiler you are running it? Or could you just send me some print screens with a superimposed analysis of a random bearing + bypass analysis for me to use the same input and compare the results I get with my Matlab file? I have no way of testing my analythical solution and I'm running out of ideas!
Thank you in advance and good work!
André Santos
RE: How to get BJSFM, A4EI, A4EJ, etc?
Right now, its in hands of someone that knows more about Fortran than I do. I will still have to do verifications and it would be very messy to do a bunch of print screens.
Sit tight and give me a few weeks to get it completed. I am working pretty hard on it now. When done, it should have a slick interface and will be easier to work with for everyone.
Did you at least test the open hole solution (i.e. zero bearing) with eCutout? It should give you identical results for an infinite plate. If you have that part right, then you only need to verify the bearing solution. You should be able to verify at least a few data points for bearing by using Ogonowski's paper. Note that Peterson will not give you good agreement for bearing (due to reasons I will explain in a technical paper I am working on).
Brian
www.espcomposites.com
RE: How to get BJSFM, A4EI, A4EJ, etc?
http://www.espcomposites.com/software/eBJSFM.html
Brian
www.espcomposites.com
RE: How to get BJSFM, A4EI, A4EJ, etc?
Many thanks for putting this software at the disposal of your colleagues.
Andries
RE: How to get BJSFM, A4EI, A4EJ, etc?
Brian
www.espcomposites.com
RE: How to get BJSFM, A4EI, A4EJ, etc?
The last contact info I have is 15 years old so it is probably not current but here it is: Mr. Gordon Negaard, ASIAC Manager, tel: (513) 255-6688, asiac@fltvc1.flight.wpafb.af.mil
Good luck
RE: How to get BJSFM, A4EI, A4EJ, etc?
I started with the ASIAC and the contact you posted. This lead to me a company that used to be responsible for the software, but the contract they had with the Air Force ran out some years back. They no longer have the software and even if they did, they have no means to distribute it. I spent months trying to track it down. I do not believe there is any official way to obtain these codes anymore. Perhaps you can contact me directly?
Brian
www.espcomposites.com