We have an aluminium wall that is meant to withstand a pressure load of ~160MPa, total of around 1000 cycles in its lifetime. Originally the idea was to go with 6082 T6 and thus be able to remain below the yield/proof stress (220-250 for the T6). However, the part needs to be bent and during...
Cheers. I hadn't looked into the exact dimensions of inserts so I thought their increase in diameter was minimal and not enough to offer a significant advantage that will justify the extra cost and assembly time. 30 to 50% is pretty big though I agree.
The wear/galling improvement is an obvious...
I must be missing something obvious here but what extra benefit will a helicoil on a standard 5000 or 6000 series aluminium give (or any other insert that is simply tapped on a weaker material for that matter), compared to tapping directly on the AL plate?
In both cases you have a connection...
Your lean design suggestion has already been part of the design so far and wherever possible, edges and transitions have been smoothed as per common engineering design practice. However, due to requirements the shape can't be a proper cylindrical, round-end vessel and the simulated stresses are...
So, the material has to be Al, this is a requirement. As Ed wrote, default choice would normally be 6061 and 1 bar of design pressure wouldn't be a problem unless we didn't want a specific area of the vessel to be as thin as possible, even tin-foil thin (as long as it's relatively leak-tight)...
I appreciate the concerns for construction codes but I can assure you that it is not the case with the vessel in discussion. Given the region, I assume it falls under European Pressure Equipment Directive, certainly not ASME. We do have an internal vacuum handbook also and to my knowledge there...
Hi Marty,
This is not about a commercial/mass-production item, more like a one-off testing prototype so the choice is not limited in terms of codes and regulations (there still are some internal codes but they don't prohibit these alloys). Basically our only requirement for this application is...
Hello,
I am working on an aluminium pressure vessel design application with one very thin area of (ideally) 0,5-1mm thickness. With such thicknesses even 0.5-1bar of differential pressure is too much for traditional 5000 or 6000 alloys so naturally I turned towards 7000 and in particular 7075...
Hi Fernando,
I agree in what you say that scans are almost impossible to produce clean surfaces, but that is not what I'm after anyway. My scan is more dense than your airplane and doesn't have such large gaps/holes so ideally I would need a "fill the cloud point with volume" option. For my...
Hi,
I have recently been sent an .STL laser scan file that I have to work with. I would like to create a usable volume or closed surface out of it. As a first step it seemed reasonable to import the STL in DSE and take it from there. However, after messing around with the available commands in...
