Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions

Table 6

Chamber pressure versus case mouth pressure.

Test ammo	Mean of 10 fired rounds (chamber versus case mouth)
	Piezo pressure at		% increase in w.r.t. chamber [%]
	25 mm (chamber) [MPa]	54 mm (case mouth) [MPa]
1-NATO	317.28	356.105	11.02
2-NATO	316.2	364.59	15.3
3-NATO	308.125	356.28	11.27
1-NSTD	327.675	337.83	3.1
2-NSTD	319.305	332.79	3.6
3-NSTD	316.775	335.53	4.71

: case mouth pressure.