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Recent content by freckle

  1. freckle

    Pretension needed to prevent separation

    Some possibiltities: I use most of the times:FED-STD-H28/2B (1994) "Federal Standard Screw-thread standards for Federal Services Section 2" Appendix B is a Design method of Unified Screw Threads. This public document can be dowloaded from: http://assist.daps.dla.mil/quicksearch/ You could also...
  2. freckle

    database reconstruction

    Hi vjshah, If I understand correctly, you should be able to solve it thus: Select the Utilities tab Select Group Select Groups To Session File In the window select all groups and if you wish to do so you can select a name for the session file (otherwise it uses a default name). Then press Apply...
  3. freckle

    Bathtub Fitting Analysis

    You could also use Mike Niu's "Airframe Stress Analysis and Sizing". It refers to Memo 88 while using a simplified method. ========================== Stressing to the maxx.....
  4. freckle

    Need comments on Aero-tech books?

    BTW: The Astronautics Structures Manual can currently be found at: http://ntrs.nasa.gov/search.jsp
  5. freckle

    Mininum thickness of skins to use countersink rivets

    Hello snappish, When applying countersunk rivets, you'll want at least 0.2mm of the rivet's shaft standing. This is for keeping a proper allowable shear load. When you know the height of the rivethead, you know the minimum thickness. When the present thickness is lower than that, you may want to...
  6. freckle

    MathCAD 2000 on XP

    Hello JCrossman, I have MathCad 2000-Pro running under XP-Pro (both UK-language versions) on an AMD1500+ system and it works very well. Success, Jelto
  7. freckle

    Anyone out there use Afgrow?

    Thanks Philcondit. I have found some SIF's in the German Handbook "Handbuch Struktur Berechnungen" HSB for stiffened panels too. I was just wondering whether there were input examples available from Afgrow users. jelto
  8. freckle

    Anyone out there use Afgrow?

    Is there anyone using the AFGROW program for crack propagation analysis in stiffened panels? Because AFGROW has no built-in model yet for this mode, I am very interested if someone has simulated a cracked stiffened panel, using an existing AFGROW model. Maybe by using Beta factors. An input...
  9. freckle

    Info on Fracture Mechanics

    Does anyone have info/requirements/data on Fracture Mechanics and Fatigue/Damage Tolerance specifically in Aircraft. Books, articles (preferably available on the Net) and websites, etc. Amongst others I am trying to find the MSG3 document.
  10. freckle

    Beam calculation software

    Try the Bridge Site for many (some free) programs: http://www.bridgesite.com/softwarelinks.htm Hope this is helpful, Jelto
  11. freckle

    how to join 2 mm aluminium plate

    tamingsari, It is difficult to weld aluminium. You need an inert gas environment to do any electric welding. This should be done by a specialist in TIG/MIG welding. Another way of connecting 2 plates of aluminium are bonding (maybe you need a special type if the temeperature gets too high) or...
  12. freckle

    Pin Loaded Holes

    ESDU (Engineering Sciences Data Unit) is an international organization which provides validated engineering design data, methods and software for the engineer. You can find contact addresses and telephone numbers on their web site: www.esdu.com Hope this is helpful.
  13. freckle

    Pin Loaded Holes

    You could try ESDU-Structures sheet 91008, which deals with the strength of lugs.
  14. freckle

    Beam MathCad files

    Can anyone tell me if there are MathCad files that deal with general solutions of bending beams? I am looking for a flexible solution of pinned end and simply supported beams with a variable number of supports. If possible, the loading should be variable as well (discrete point loads at variable...
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