TY - JOUR N2 - In the presented work, the author introduces the ballistic energy absorbed by the shield mpV2BL/2 to elaborate the results of firing on homogeneous plates and multi – layered constructional shields. The introduced criterion V2BL is used to determine ballistic thickness hBL and ballistic velocity VBL under normal firing 7.62 mm ŁPS bullets. The experimental tests were performed on an unified test stand to investigate ballistic resistance of materials in field conditions. The stand was developed at the Naval University of Gdynia and then patented. The design of this test stand was based on the construction of ballistic pendulum arranged for measuring: the impact forces, the turn angle of ballistic pendulum φ, initial and residual velocities of the bullet. All the measurement data were transmitted to a digital oscilloscope and personal computer. The energy absorbed by the shield was subject to further analysis of V2BL[R] according to Recht’s and Ipson’s method and of V2BL[Z] according to author’s method. The verification of the above-mentioned dependences was based on the results of the tests. The ballistic velocities VBL[R] and VBL[R] of the steel and steel – aluminium alloy shields with air interlayer thicknesses of 0, 6, 12 mm were approximately equal, however, they were quite different for aluminium alloy multi – layered shields, according to the results of firing 7.62 mm ŁPS bullets. These properties were confirmed by the average mass coefficients α2s and average effectiveness coefficients βs of the V2BL for the tested methods. L1 - http://journals.pan.pl/Content/114899/PDF/AME_2007_131542.pdf L2 - http://journals.pan.pl/Content/114899 PY - 2007 IS - No 1 EP - 25 DO - 10.24425/ame.2007.131542 KW - ballistic velocity KW - ballistic thickness KW - effectiveness coefficient KW - mass coefficient A1 - Zatorski, Zdzisław PB - Polish Academy of Sciences, Committee on Machine Building VL - vol. 54 DA - 2007 T1 - Modelling and experimental verifications of energy absorbed by constructional shields under firing SP - 17 UR - http://journals.pan.pl/dlibra/publication/edition/114899 T2 - Archive of Mechanical Engineering ER -