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Abstract. A numerical study has been conducted using the explicit non-linear
transient dynamic numerical code AUTODYN-2D to analyse the penetration and
perforation of EN8 (AISI 1040) steel plate by the 5.56-mm
L2A2 Ball round. The steel plate was heat-treated to two
different hardness values and quasi-static tensile tests were performed to
provide work-hardening constants for the Johnson-Cook constitutive model. A model
of the bullet was developed using material data available from
existing AUTODYN model libraries and parameters modified based upon the
measured hardness of the bullet’s individual components. The numerical results
compared favourably with experimental trials where the bullet’s residual momentum
after target perforation was measured by means of a calibrated
ballistic pendulum. The simulations provided some useful insight into the
penetration mechanisms.
Related topics:
ammunition, small arms, firepower and protection
View first page of "Hazell: Numerical Simulations and Experimental Observations of the 5.56-Mm L2A2 Bullet Perforating Steel Targets of Two Hardness Values"
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