Evaluation of Penetration Performance for Linear Shaped Charges

Abstract

Fundamental jet performance tests of linear shaped charges (LSC) were conducted to evaluate their jet penetration. The purpose of these tests is to enhance the penetration performance of LSC. The apparatus used for these tests were based on penetration tests for conical shaped charges (CSC). Photos of the aluminum-sheathed LSC jet taken by using flash X-ray confirmed the jet velocities to be about 2,400 m/s. The velocity was also verified by the AUTODYN-2D code, and was an unexpected figure as compared to CSC. The penetration velocities of aluminum-and lead-sheathed LSC against steel plates were calculated to be less than 1,000 m/s at a maximum region.

Design of a Novel Linear Shaped Charge and Factors Influencing its Penetration Performance

“…For the simulation method, smoothed particle hydrodynamics (SPH) was used to investigate the formation process of a linear-shaped charge jet [10][11][12]. Miyoshi conducted a standoff test of a LSC that provided significant information about determining the optimal standoff distance and allowed the design of effective cutting plans for use with LSCs [13,14]. Vinko Škrlec experimentally determined the effects of a mass of explosive, liner material and standoff distance on the penetration depth of the LSCs [15,16].The shape of a shaped charge liner has great influence on the formation of metal jet and its penetration performance into a target.…”

Orthogonal Structure Design of the Linear Shaped Charge Based on Steady-State Velocity Model

“…Feng et al presented a modified SPH model for simulating linear shaped charges with HE detonation and explosion, and hydrodynamics with material strength including explosion-driven metal deformation and jet formation as well the penetrating effects onto a target plate [9] . In addition, the influence of the vertex angle of the liner and the thickness of the shell on the LSC jet was also studied [10]- [11] . Cheng Xi et al designed a bi-apex-angle linear shaped charge (BLSC) which was 29.72% better than an ordinary LSC, and investigated the influence of liner thickness, explosive type, combination of small and large vertex angle, ratio of small to all vertex angle liner, and standoff distance on the penetration performance of BLSCs [12] .…”