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Recent content by sebfr1138

  1. sebfr1138

    Wind speed for lebanon

    In Art, there are no standard, that s why, i use a coherent wind speed from building standard and demonstrate that with such wind, it will be OK. the scale is not the same that building, but if pièce of art fall, it could injure people anyways we try to make it last for years, and because the...
  2. sebfr1138

    Wind speed for lebanon

    As I am aerospace engineer so, aerodynamics is not a problem. i use Cx of basic shape (like sphere or plate plane) and thats it fit well with artwork i work with Fx = 1/2 ro V^2 S Cx in most case, i know that the real drag will be less than plane plate so i am conservative Sébastien
  3. sebfr1138

    Wind speed for lebanon

    Hello Thanks for your interest ThomasH in fact, i design a middle size piece of art (3m high) and i don't know where it will take place in lebanon, but probably on the top of a roof Generaly, i use a 1.5 safety coeficient between wind gust speed loads and elastic limit of the material. it s...
  4. sebfr1138

    Wind speed for lebanon

    in fact, before lebanese standard NL 137:2017, it s seem that you can use BS, eurocode or asme standard to do building computation but no way to find the reference value for wind speed in lebanon. eurocode goes up to Greece and ciprius https://www.dlubal.com work for isreal too but not...
  5. sebfr1138

    Wind speed for lebanon

    Hello and thanks for your answer unfortunatly, i have already read this documents and visit this web site. there are "hundreds" of reference about wind power and wind density in lebanon, but nowhere, i was able to find some values about wind gust or extreme wind. I know i may miss it somewhere...
  6. sebfr1138

    Wind speed for lebanon

    Hello I need to find Wind for Lebanon. It is for a wide art piece so usualy, i use wind speed from building design standards I find building standard for lebanon name wich is "Calculation of wind loads on structures NL 137:2017" but I have no answer writing to Libnor, the lebanese standards...
  7. sebfr1138

    main step for sismic FEA analysis on a pylon shape sculpture

    Thanks a lot for theses explanations Hardbutmild i try to apply that to my case and let you know later Have a nice day Sébastien
  8. sebfr1138

    main step for sismic FEA analysis on a pylon shape sculpture

    Hello and thanks you for yours answer here a little sketch to better understand my concerns the weight of the pylon would probably be around 500 kg so i have a heavy load on top of the pylon and with a simple modal analysis, i found some vibrating frequencies at 1.3 hz in torsion and 1.6hz...
  9. sebfr1138

    main step for sismic FEA analysis on a pylon shape sculpture

    Hello and thank you for your answer i know that the load will be low but my configuration could have a low frequency natural vibration and i want to ensure that there is now way it could be damage, and in a second hand, i would like to learn to be able to compute other project in the future the...
  10. sebfr1138

    main step for sismic FEA analysis on a pylon shape sculpture

    Hello it will be located in Bordeau, France. it is in eurocode 8 located in area 2 (low) Agr = 0.7m/s2 it s a very moderate sismic area but the sculpture is a kind of pylon with important mass on the top so, it could be quiet critical (it s a 5m high pylon with a 1500kg weight on the top )...
  11. sebfr1138

    main step for sismic FEA analysis on a pylon shape sculpture

    Hello everybody I work as structural engineer for artist usualy, the shape of the sculpture make that i don t need to do vibrating studies, but today, i need to do a sismic study due to the "pylon" shape sculpture but i don't know how to proceed to do sismic study I use (and know well)...
  12. sebfr1138

    update catalog problem

    Hello first of all, excuse my english, it is not perfect. i have a concern with a catalog. i have create a part "part1" with a design table, then i have create a catalog with this part family then, in an assembly, i instantiate through the catalog my different parts. when i modify the...
  13. sebfr1138

    CATIA instantiating problem

    Hello everybody i am not a beginner in catia, but i am not a senior user too. I have to instantiate a simple extrusion on a wide number of surface (around 15000 surfaces) which are not aligned but all are in parallel planes. i can easily create points or plane on a corner of this surface to...
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