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...
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
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...
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...
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...
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...
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...
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...
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 )...
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)...
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...
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...
