Hypervelocity impact of mm-size plastic projectile on thin aluminum plate

Poniaev, S. A.; Kurakin, R. O.; Sedov, A.I.; Bobashev, S. V.; Zhukov, B. G.; Nechunaev, A.F.

doi:10.1016/j.actaastro.2016.11.011

Cited by 31 publications

(7 citation statements)

References 10 publications

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“…The authors later introducing a normalized smoothing function into their algorithm which scoped the region of particle interaction within a coupled FEM-SPH model [19]. More recently, SPH modeling techniques have expanded into simulation of hypervelocity impact [20,21], penetration of ballistic gelatin [22,23], perforation of layered targets [24], and use of granular media [25,26]. Much of this work has remained in twodimensional space as the computational requirements for modeling in three-dimensions are still high.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Simulation Techniques Used in High Strain Rate Projectile Impact

2021

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A series of computational models and simulations were conducted for determining the dynamic responses of a solid metal projectile impacting a target under a prescribed high strain rate loading scenario in three-dimensional space. The focus of this study was placed on two different modeling techniques within finite element analysis available in the Abaqus software suite. The first analysis technique relied heavily on more traditional Lagrangian analysis methods utilizing a fixed mesh, while still taking advantage of the finite difference integration present under the explicit analysis approach. A symmetry reduced model using the Lagrangian coordinate system was also developed for comparison in physical and computational performance. The second analysis technique relied on a mixed model that still made use of some Lagrangian modeling, but included smoothed particle hydrodynamics techniques as well, which are mesh free. The inclusion of the smoothed particle hydrodynamics was intended to address some of the known issues in Lagrangian analysis under high displacement and deformation. A comparison of the models was first performed against experimental results as a validation of the models, then the models were compared against each other based on closeness to experimentation and computational performance.

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Section: Introductionmentioning

confidence: 99%

Modeling and Simulation Techniques Used in High Strain Rate Projectile Impact

2021

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“…Мониторинг состояния околоземного космического пространства показывает, что существенно возрастают количество техногенных осколков космического мусора и опасности столкновения высокоскоростных осколков естественного и искусственного происхождения с орбитальными космическими аппаратами (КА). Поиск решения этой проблемы ведется в нескольких направлениях [1][2][3][4][5].…”

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“…Другим направлением является моделирование на земле процессов пробития КА частицами и элементами различной массы со скоростями 2…15 км/с с целью поиска таких параметров противометеороидной защиты, которые позволят обеспечить требуемый уровень безопасности КА [1][2][3][4]. Для разгона частиц до таких скоростей применяются различные способы.…”

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“…В приведенных выше исследованиях рассматриваются случаи высокоскоростного удара частиц космического мусора о преграду. Вместе с тем установлено, что серьезную проблему для КА представляют метеороиды, летящие со скоростью 2…3 км/с [1][2][3][4], и поэтому заслуживают внимания результаты исследований столкновения частиц и элементов, имеющих эти скорости, с защитными экранами космических аппаратов. Для моделирования такого элемента предлагается использование зарядов, образующих высокоскоростные удлиненные элементы, которые изменяют свою геометрию в процессе полета .…”

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Specifics of generating explosively formed projectiles of variable shape from metal liners

Kruglov

Колпаков

Bolotina

2019

EJSI

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The study proposes to use charges forming high-speed elongated elements (HSEE) with a variable shape for ground-based simulation of the penetration of particles and elements into the spacecraft's hull. During the operation of such a charge, an explosive throws a metal lining over a distance of several hundred charge diameters. The metal segment lining is deformed during the throwing process and takes the form of an elongated element. In calculations we used steel linings with a degressive and progressive profile whose outer and inner surfaces are formed by spherical surfaces, as well as by a combination of spherical and conical surfaces. The paper shows the results of a numerical analysis which determines the effect of the geometric and physico-mechanical parameters of segmented cumulative linings on the efficiency of the charges forming high-speed elongated elements. The efficiency of the charges was determined by the characteristics of the formed element, i.e. elongation, degree of fullness and the diameter of the horizontal stabilizer. Furthermore, we established the dependences which describe the effect of the lining material dynamic yield point and the radius of transition of the spherical surface to the conical surface on the elongation of the element and the diameter of the horizontal stabilizer. We also showed the possible contradictory effect of changing the radius of transition of the spherical surface of the lining into the conical surface on the aerodynamic stability parameters of the high-speed elongated element.

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“…Для установок типа ITER доставка вещества в центральные зоны реактора потребует скоростей пеллетов 5 km/s и выше [1,[4][5][6]. Другие направления использования быстрых макрочастиц включают моделирование активного космического эксперимента [7] и исследование высокоскоростного удара [8].…”

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Особенности Ускорения Тел Миллиграммовой Массы В Рельсовых Электромагнитных Ускорителях С Внешним Импульсным Магнитным Полем

Поняев¹,

Резников²,

Куракин³

et al. 2019

Письма В Журнал Технической Физики

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Solid polycarbonate impactors were accelerated in a channel of electromagnetic railgun to which an external pulsed magnetic field was applied. The channel was filled with air at atmospheric pressure. The dynamics of impactor acceleration in the railgun was calculated. The impactor velocities in the railgun muzzle were measured in two cases. In the first case the railgun and external field system were powered from independent energy sources (scheme 1) and in the second case the railgun and external field circuits were connected in series to a common energy source (scheme 2). It was established that the effective coefficient of rail erosion in a 2-mm caliber channel that takes into account only the eroded mass captured by the plasma piston was 1.5–1.7 mg/C, and the eroded mass involved in the motion was comparable with the impactor mass. It was shown that in scheme 1, when the external field system was switched earlier, the impactor was accelerated at a maximum magnetic induction, and the impactor velocity in the channel muzzle exceeded 6 km/s.

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Hypervelocity impact of mm-size plastic projectile on thin aluminum plate

Cited by 31 publications

References 10 publications

Modeling and Simulation Techniques Used in High Strain Rate Projectile Impact

Modeling and Simulation Techniques Used in High Strain Rate Projectile Impact

Specifics of generating explosively formed projectiles of variable shape from metal liners

Особенности Ускорения Тел Миллиграммовой Массы В Рельсовых Электромагнитных Ускорителях С Внешним Импульсным Магнитным Полем

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