I am making modifications to my air rifle, this part in question is the fill valve. Since posting on engineers edge I machined the part with the labeled 2mm dimension to 4mm as that was the dimension on the original part. After testing it I was happy that it was safe to use and it has worked...
Hi,
Sorry perhaps I didnt make it clear enough in my first post. Thats what I was trying to calculate the max amount of pressure before failure, before the material shears off at the point labelled "2mm thick".
Ok so if we used Shear stress = force/ area
Shear stress = 31.4N / 0.00012566m^2
Shear stress = =249,880.63 Pa
Should i factor in the strength of the material? For example wouldn't steel be able to handle more pressure than aluminium?
(Ps i really really appreciate all your help, thank you)
When you say area do you mean the area where the stress will occur?
If so would it be the circumference x thickness?
62.83mm x 2mm =125.66mm^2 or 0.00012566m^2
Or am i completely off the mark?
Ahh we are getting there...
Pressure is force applied to the surface so to speak.
Pressure = force / area.
Which gives us...
Force = pressure x area.
Force = 100,000Pa x 0.000314m^2
Force = 31.4N
Oh i see what you mean.
The total area that the pressure is acting on including the upward area is 3.14cm^2.
For the force cam i simply convert the pressure? For example 100 bar of pressure = 101.972 kgmf/cm^2.
Hi,
Sorry reading my post back I understand I wasn't clear, I don't mean where the arrows are I mean where I've done the black line and labeled it 2mm thick i.e. "the contact area between the 2 parts".
Hi,
I understand the location, its pretty much where iv marked with a black line on the diagram, I just can't for the life of my figure out how to calculate the max force.
Regards
Hi guys,
The imagine the picture attached is a cross section of a cylinder. How would I work out the maximum amount of pressure this can be exposed to before the metal shears off at the location labelled "2mm thick"?
Lets say the following material is used:
T6 Aluminium
Ultimate Tensile...
Because that's the pressure it currently runs at :s, its an already made pressure cyclinder on a product...all I am doing is trying to increase the capacity.
I wasnt assigned it its a personal project. My experience is aerospace/electronics/manufacturing engineering/machining/mechanics.
Im not...
Hi,
I have no idea what tension load is, the first time I have ever dealt with designing threads.
The cylinder is some sort of hardened steel, possibly a form of gun steel, although there is no way I can know for sure. The cylinder threads can easily take the pressure its the threads on the...
Hi guys,
Here is my problem / task: I have a 232 bar pressure cylinder (not sue what material it is made from) with a brass fill valve at one end. I am trying to design a new shorter valve so that it takes up less space inside the cylinder, and thus increasing the capacity.
How would I...