08-22-2014, 11:45 AM
Good points LRRPF52.
You mentioned the pressures will be highest at the chamber and the highest stress will be at the minor diameter next to the barrel shoulder in picture. So are you saying there is a pressure spike that could be above said 50ksi. Or is 50ksi the max pressure the barrel/chamber will see and it all happens right here.
So if the max pressure happens back at the chamber, to determine what diameter the barrel can go down too at other locations, you would want to know the pressures at those locations, which should be less than 50ksi.
I think bending at this critical location might be something to consider. This is the anchor point of the barrel which is cantilevered from this location. Barrel whip will put tension stress in the barrel at this location. That is if you want to know what sort of FoS there is for interacting the hoop stress and axial stress due to bending.
For determining how small you can contour the barrel it shouldn't be an issue.
You mentioned the pressures will be highest at the chamber and the highest stress will be at the minor diameter next to the barrel shoulder in picture. So are you saying there is a pressure spike that could be above said 50ksi. Or is 50ksi the max pressure the barrel/chamber will see and it all happens right here.
So if the max pressure happens back at the chamber, to determine what diameter the barrel can go down too at other locations, you would want to know the pressures at those locations, which should be less than 50ksi.
I think bending at this critical location might be something to consider. This is the anchor point of the barrel which is cantilevered from this location. Barrel whip will put tension stress in the barrel at this location. That is if you want to know what sort of FoS there is for interacting the hoop stress and axial stress due to bending.
For determining how small you can contour the barrel it shouldn't be an issue.