"In the case of Kip's picture from a Boxall and Edmiston FEA Analysis, we see a CAD generated depiction of a shotgun frame, and a color scale going from 0 to 220,594,000 newtons/sq. meter of force. 220,594,000 newtons/sq. meter is the value given for the yield strength of the action being tested in this simulation."
keith: yield strength of 220,600,000 newtons/ sq. meter is only 32,000 psi
The bright green area of greatest stress IF 100,000,000 newtons/ sq. meter is 14,504 psi; IF it is 130,000,000 that would be 18,855 psi
B&E did not share the max. psi of the simulated stress, but CIP 'High Performance Superior' proof 1320 BAR = 19,145 psi which is 132,000,128 newtons / sq. meter
B&E reported in 2011 that the actions were EN series chrome moly steel
The industrial standard for (non-heat treated) AISI 4140 Chrome Moly is ultimate tensile strength - 95,000 psi; yield - 60,000 psi
Yield strength of AISI 1020, which was used for double gun frames, is 51,000 psi
SO something is not right with the simulation pressures, but I've always learned best with pictures and that helps.
Yes, pressure generated by the expanding gas is exerted in every direction. The transducer is at 1" in the wall of the shotgun pressure test barrel.
BTW: you believe yourself to be mocking me with "The Preacher". I am not the one you are mocking, and you might consider the consequence for doing so. Really (Galatians 6:7)
Please call me by my name.
