The Numerical Simulation Method of the Slot Crack Groups’ Effect Analysis for Solid Rocket Motor Grain

Table 3

Mechanical properties of the new cast propellant and unilateral crack results.

(MPa)	Poisson’s ratio	(mm)	(Nmm/mm^2) (average)
			Simulation	Test	Relative error
1.805	0.496	3.0	0.979	1.007	2.8%