Hello all,
I'm having some trouble about the calculation of a stiffener:
I shoul calculate the modulus of inertia of the stiffener; i'm quite confident that I should consider the wall thickness too, in green in the picture, but I cannot find any rules or any method to be sure HOW MUCH area I...
I agree with you, kingnero, but remember that I'm calculating a built hook for maximum SWL, so I can't bring any modification to design or material.
My question is: an equivalent hook, made by other constructor, has similar SWL with a lesser thickness. So: am I wrong or the material si not the...
Ok, I have other images:
Costraint and load conditions are here represented, and I'm quite sure that they are correct
My question is still the same: which material is usually used? S355, with this condition of stress, IMHO is not appropriate.
Hello all,
I'm having some trouble with a C-hook for aluminum coils
My customer asked to verify the SWL of the hook. He made it using S355JR (510 MPa rupture, 355 MPa yield).
I tried to verify it using FEM method (PTC Simulate) and applying EN13155 rules: at 2xSWL + weight the maximum...
Of course rb1957,
my design is this and I don't want to change anything against rules and safety.
But my customer (that will build the tong) is choosing his partner in engineering, and if my competitor is lighter than me he will prefer him, even if (my customer can't know that...) my competitor...
Thanks to all.
Some more specifications:
I don't know design (rules and so on) of my competitors, of course I'm giving all the best in my design, that's the why I'm trying to know if my result is quite good and my competitors are in mistake or the opposite!
About temperature: I made a...
Ingot Tong 250 ton: what about weight?
I'm budgetting an ingot tong, capacity 250 ton, maximum open width 3500 mm,
minimum open width 1500 mm, ingot temperature 1300°C (just for sample: http://hoists-crane.com/lifting-devices/lifting-devices-ingot-tong.html)
At the moment I need to know the...
Hi all, I would like to have more informations (pictures, rules, everything!) about wheel crane without flanges. When are they used? Which kind of driving system can I use? A double couple of shafts and bearings on one side of the crane, acting each couple at the beginning and at the end of the...
Thanks to all!
And what about welding wood and thermoplastic? I know that wood has lignin, that is compatible with thermoplastic. But in this case I read somewhere on the internet that USW is worst than vibration welding. I think I'll make a try. When ready I'll inform you. Thanks to all.
Max
Hello all, I'm Max and this is my first post in this forum.
I'm having my first experiences in ultrasonic welding. My need is to weld an ABS (or PVC or PP) band on another thick piece of plastic, so that I can't use an anvil. Being the band so long, the weld must be continuous.
Can anyone give...
