Research on M-Paul Dynamic Constitutive Relation of Q235B Steel

Table 9

Comparison of numerical simulation results in different case.

		Case 1	Case 2
Vi < Vbl	Stress distribution
		The stress is distributed mainly in an annular region where the edge of projectile contacts the target
	Failure model	Back bulge	Back bulge
Vi > Vbl	Stress distribution
		The stress is concentrated in the annual region where the edge of projectile directly contacts target plate and extends to the back of target plate
	Failure model	Shear plugging or adiabatic shear failure	Shear plugging or adiabatic shear failure
Vi > Vbl	Deformation of target
		Highly localised bulge on both sides of the rear cavity; the height of rear bulge is uneven in different orientations.	Highly localised bulge on both sides of the rear cavity; the height of rear bulge is even in different orientations.