Posted: Thu Apr 08, 2010 7:19 pm
Coming to this thread way late but....
2) 3:1 safety margin on a dynamically loaded system? You'll *PROBABLY* be OK, but I won't be standing next to you when you shoot it. At least in my life as a Mech Engineer, 3:1 is the rule of thumb for static loads, but for dynamic loads it's 5:1.
1) Also, are you using thin walled pressure vessel equations or the "real" equations? After all, I'm assuming you're using some pretty heavy stuff which means the thin wall equations are no longer valid. Worse, the thin wall equations - if applied to a thick walled vessel - will overstate the actual strength.
1 + 2 = You may not have a safe system on your hands.
2) 3:1 safety margin on a dynamically loaded system? You'll *PROBABLY* be OK, but I won't be standing next to you when you shoot it. At least in my life as a Mech Engineer, 3:1 is the rule of thumb for static loads, but for dynamic loads it's 5:1.
1) Also, are you using thin walled pressure vessel equations or the "real" equations? After all, I'm assuming you're using some pretty heavy stuff which means the thin wall equations are no longer valid. Worse, the thin wall equations - if applied to a thick walled vessel - will overstate the actual strength.
1 + 2 = You may not have a safe system on your hands.