On interaction of shaped-charge jets with the crater walls in penetrating metals and brittle materials

Kozachuk, A. I.; Kozhushko, A. A.; Rumyantsev, B. V.; Sinani, A. B.; Vlasov, A. S.; Zil’berbrand, E. L.

doi:10.1016/j.ijimpeng.2003.09.034

Cited by 9 publications

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“…1a and c. This can be explained that aluminum has higher deformation rate. Hence it generates larger contact area with concrete medium in the process of penetration, and larger contact area allows more energy to be transferred to the target resulting in larger hole diameter [11]. The penetration depth and hole produced by the shaped charge with steel liner are in middle of two extremes produced by copper and aluminum, as shown in Fig.…”

Section: Experimental Study On Penetration Into Concrete By Shaped Chmentioning

confidence: 98%

“…The second-stage warhead arrives to the end of hole along the passage and explodes, thus destroying the object. In order to achieve the best results for destruction, the first-stage shaped charge should form a hole with a optimum depth and diameter in concrete targets to guarantee that the second-stage warhead smoothly penetrates into the hole and explodes at the optimum depth [8][9][10][11]. Therefore, a series of experiments have been conducted to investigate the influence of cone angles and liner materials on jet penetration performance, and the first-stage shaped charge for the tandem is optimized.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of penetration performance of shaped charge into concrete targets

Wang

Ning

2008

Acta Mech Sin

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In order to develop a tandem warhead that can effectively destroy concrete targets, this paper explores the penetration performance of shaped charges with different cone angles and liner materials into concrete targets by means of experiments. The penetration process and the destruction mechanism of concrete targets by shaped charges and kinetic energy projectiles are analyzed and compared. Experimental results suggest that both kinetic energetic projectile and shaped charge are capable of destroying concrete targets, but the magnitudes of damage are different. Compared with a kinetic energy projectile, a shaped charge has more significant effect of penetration into the target, and causes very large spalling area. Hence, a shaped charge is quite suitable for first-stage charge of tandem warhead. It is also found that, with the increase of shaped charge liner cone angle, the depth of penetration decreases gradually while the hole diameter becomes larger. Penetration depth with copper liner is larger than of aluminum liner but hole diameter is relatively smaller, and the shaped charge with steel liner is between the above two cases. The shaped charge with a cone angle of 100 • can form a jet projectile charge (JPC). With JPC, a hole with optimum depth and diameter on concrete targets can be formed, which guarantees that the second-stage warhead smoothly penetrates into the hole and explodes at the optimum depth to achieve the desired level of destruction in concrete targets.

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Section: Experimental Study On Penetration Into Concrete By Shaped Chmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Experimental investigation of penetration performance of shaped charge into concrete targets

Wang

Ning

2008

Acta Mech Sin

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“…В отличие от металлов внедрение металлической высокоскоростной струи (ВСС) в хрупкие материалы (керамики, стекла, горные породы) осложняется взаимодействием с каверной в преграде [1][2][3][4][5][6][7][8][9]. Наблюдаемое эффективное поглощение струи объяснялось повышенным прочностным сопротивлением хрупких материалов (ХМ) [7,8,10].…”

Section: Introductionunclassified

Дестабилизация Внедрения Высокоскоростной Струи В Хрупких Материалах

Румянцев¹

2019

Журнал Технической Физики

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The results of penetration of a high-speed metal jet (with a velocity of 3–7 km/s) into brittle materials (ceramics and glass) have been analyzed. The data on jet destabilization as a result of the response of the brittle material to the high-speed penetration are presented. The generalized dependence of the high-speed jet absorption efficiency on the bending strength of the brittle material has been constructed in the hydrodynamic approximation.

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“…Including a layer of glass within an opaque armour significantly increases an armour's resistance to the fastest projectile it is possible to launch artificially, namely shaped charges . This is often attributed to the phenomenon of ‘bulking’ in which a fractured brittle material occupies a larger volume than it did before it was damaged .…”

Section: Introduction and Some Observationsmentioning

confidence: 99%

An Introduction to the Properties of Silica Glass in Ballistic Applications

Walley

2013

Strain

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The purpose of this review is to introduce the interested reader to the literature on the use of silica glasses in ballistic applications. These applications include optically transparent windows (where their amorphous nature, appropriate band gap, and cheapness make them ideal window materials) as well as layers in opaque armours designed to be resistant to shaped charges. In the latter application, their increase in volume (bulking) on fracture disrupts the shaped charge jet. Other topics covered in this review include low‐velocity damage by windborne debris, liquid and solid impact, dynamic methods of testing (Hopkinson pressure bar, Taylor impact, and plate impact shock loading), and constitutive models. The use of glass as a shaped charge is also discussed.

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On interaction of shaped-charge jets with the crater walls in penetrating metals and brittle materials

Cited by 9 publications

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Experimental investigation of penetration performance of shaped charge into concrete targets

Experimental investigation of penetration performance of shaped charge into concrete targets

Дестабилизация Внедрения Высокоскоростной Струи В Хрупких Материалах

An Introduction to the Properties of Silica Glass in Ballistic Applications

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