Wszystkie pola: Armour - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Numerical analyses of ceramic/metal ballistic panels subjected to projectile impact
Autorzy:: Morka, A.
Nowak, J.
Powiązania:: https://bibliotekanauki.pl/articles/242960.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: computational mechanics
impact problem
armour perforation
ballistic resistance
ceramic armour
Opis:: The paper concerns research and development on modern, ceramic-based, protective layers used in the armour of tanks, combat vehicles and aeroplanes. A task of ceramic panels is reduction and dispersion of localized kinetic energy before a projectile or its fragment approaches the interior of protected object. The numerical investigations have been performed to determine the ballistic resistance of ceramic/metal panels subjected to projectile impact. The impact of the 7.62mm armour-piercing projectile on the ceramic elements backed by a metal plate was analyzed. The tested panels were composed of a ceramic layer (Al2O3, SiC or B4C) and a metal layer (7017 aluminium alloy, Armox 500T steel or Ti6Al-4 titanium alloy). Different shapes of ceramic elements were analyzed, including hemispheres and pyramids, with respect to standard flat tiles. The influence of the impact point location was also taken into considerations. The computer simulations were performed with the Finite Element Method implemented in LS-DYNA code. Full 3D models of the projectile and targets were developed with strain rate and temperature dependent material constitutive relations. The conclusions presented in the paper can be applied to develop modern impact protection panels in which the appropriate balance between the mass and protection level must be accomplished.
Źródło:: Journal of KONES; 2012, 19, 4; 465-472
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Numerical study of the shape effect in the ceramic based ballistic panels
Autorzy:: Morka, A.
Jackowska, B.
Niezgoda, T.
Powiązania:: https://bibliotekanauki.pl/articles/245901.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: computational mechanics
impact problem
armour perforation
ballistic resistance
ceramic armour
Opis:: The numerical investigations have been performed to determine the front surface shape effect in the cer based armour systems. Different shapes of ceramic elements were analyzed, including hemispheres and pyramids with respect to standard flat tiles. The influence of the impact point location was also under considerations. The Computer simulations were performed with the Element Free Galerkin Method (EFG) implemented in LS-D code. An impact of the 14.5xll8mm B32 armour piercing projectile on the A12O3 different shape elements backe 7017 aluminium alloy plate was analyzed. Full 3D models of the projectile and targets were developed with strain, rate and temperature dependent material constitutive relations. The models of the projectile, ceramic and aluminium alloy targets were validated with utilization of the experimental data found in literature. The obtained results confirm, the preliminary presumptions, that the shape of the front surface can significant role in the overall ballistic resistance of the panel. Particularly projectile-target initial contact area st to be important factor as showed by impact point location analysis. The conclusions presented in this paper can be applied to develop modern impact protection panels where the appropriate balance between the mass and protection level must be accomplished.
Źródło:: Journal of KONES; 2009, 16, 4; 539-548
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Model obliczeniowy do oszacowania odporności balistycznej pancerzy stalowych
A calculation model for estimation of ballistic resistance of steel armour plates
Autorzy:: Sperski, M.
Powiązania:: https://bibliotekanauki.pl/articles/223340.pdf
Data publikacji:: 2009
Wydawca:: Akademia Marynarki Wojennej. Wydział Dowodzenia i Operacji Morskich
Tematy:: odporność balistyczna
osłony pancerne
model obliczeniowy
ballistic resistance
armour plates
calculation model
Opis:: Przedstawiono nieskomplikowany model obliczeniowy do oszacowania zdolności na przebicie pociskami karabinowymi osłon pancernych zbudowanych z materiałów ciągliwych. Metoda umożliwia wyznaczenie minimalnej grubości pancerza odpornego na ostrzał, gdy znane są masa, prędkość i kaliber pocisku oraz wytrzymałość na rozciąganie materiału, z którego wykonano pancerz. Jeżeli pocisk przebija osłonę, możliwe jest obliczenie prędkości końcowej pocisku, a także czasu przebijania.
The paper presents a simple calculation model for assessment of a possibility to pierce armor plates made of ductile materials with riffle bullets. The method makes it possible to determine the plate thickness if the weight, caliber and speed of the bullet as well as the ultimate tensile strength of the plate material are known. If the bullet penetrates the armour the calculation of final velocity of bullet and the time of piercing is possible.
Źródło:: Zeszyty Naukowe Akademii Marynarki Wojennej; 2009, R. 50 nr 4 (179), 4 (179); 51-59
0860-889X
Pojawia się w:: Zeszyty Naukowe Akademii Marynarki Wojennej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: On the modelling of penetration/perforation problems
Autorzy:: Morka, A.
Powiązania:: https://bibliotekanauki.pl/articles/246015.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: computational mechanics
impact problem
armour perforation
penetration
ballistic resistance
Opis:: The aim of this paper was to present the main aspects of the numerical modelling within the scope of penetration/perforation problems. The most important stages of the computer model development were discussed in detail. They include the study of the hypervelocity impact physics, selection of the numerical solution method, problem discretization in time (time step) and space (mesh/grid), constitutive models consideration, Initial Boundary Conditions (IBC) and finally choice of the results form for analysis and discussion. The Computer simulations were performed with the Element Free Galerkin Method (EFG) implemented in LS-DYNA code. An impact of the 12. 7x108 mm B32 armour piercing projectile on the selected targets was analyzed. Full SD models of the projectile and targets were developed with strain rate and temperature dependent material constitutive relations. The models of the projectile, ceramic and aluminium alloy targets were validated with utilization of the experimental infield tests and data found in literature. The obtained results confirm that EFG method can be considered for numerical solving of the penetration/perforation problems. The errors in Depth of Penetration have not exceeded 20% as compared numerical and experimental results. The conclusions presented in this paper can be applied to develop modern impact protection panels where the appropriate balance between the mass and protection level must be accomplished.
Źródło:: Journal of KONES; 2010, 17, 1; 291-297
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Lightweight high performance vests and inserts with Dyneema® UD
Autorzy:: Meulman, H.
Powiązania:: https://bibliotekanauki.pl/articles/237955.pdf
Data publikacji:: 2009
Wydawca:: Instytut Technologii Bezpieczeństwa Moratex
Tematy:: odporność balistyczna
opancerzenie pojazdu
kamizelka ochronna
ballistic resistance
vehicle armour
protective vest
Opis:: For many years Dyneema fabric and Dyneema Uni-Directional composite are used in personal and vehicle armour. Dyneema Uni-Directional composite has proven to be very effective against small arms ammunition, both in soft and hard armour. Vest and inserts with Dyneema® UD has the lowest weight, leading to a high comfort feeling of the user. In this presentation the newest technology developments will be presented on body armour, based on Dyneema ® UD. Not only ballistic resistance will be addressed, showing the light concepts, also other properties like fire resistance will be presented.
Źródło:: Techniczne Wyroby Włókiennicze; 2009, R. 17, nr 2/3, 2/3; 81-82
1230-7491
Pojawia się w:: Techniczne Wyroby Włókiennicze
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Numerical study of the projectile trajectory disturbing during the oblique impacts
Autorzy:: Morka, A.
Niezgoda, T.
Powiązania:: https://bibliotekanauki.pl/articles/244096.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: computational mechanics
impact problem
armour perforation
ballistic resistance
oblique impact
Opis:: The numerical investigations have been performed to determine the effect of the projectile trajectory disturbing during oblique impacts. An impact of the 14.5x118 mm B32 armour piercing projectile on the A12O3 different shape elements backed by 7017 aluminum alloy plate was analyzed. The oblique impact was realized by different shapes of the frontal ceramic elements, including hemispheres and pyramids, with respect to standard flat tiles. The influence of the impact point location was also under considerations. The Computer simulations were performed with the Element Free Galerkin Method (EFG) implemented in LS-DYNA code. full 3D models of the projectile and targets were developed with strain rate and temperature dependent material constitutive relations. The Johson-Cook model was applied to describe the metallic parts, while the ceramic was modelled by Johnson-Holmquist constitutive relations. The models of the projectile, ceramic and aluminium alloy targets were validated with utilization of the experimental datafound in literature. The obtained results confirmed that the projectile trajectory undergoes essential deviation because of the projectile angular velocity. The conditions for maximizing the value of this angular velocity were studied and it is possible to reach several radians per millisecond. The conclusions presented in this paper can be applied to develop modern impact protection panels where the appropriate balance between the mass and protection level must be accomplished.
Źródło:: Journal of KONES; 2010, 17, 3; 307-312
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Sprzężona eksperymentalno-numeryczna analiza przebicia konstrukcji wielowarstwowej przez pocisk 7,62×54R typu B32
Coupled experimental-numerical analysis of multilayer structures penetration by 7.62×54R B32 projectile
Autorzy:: Morka, A.
Niezgoda, T.
Nowak, J.
Powiązania:: https://bibliotekanauki.pl/articles/209586.pdf
Data publikacji:: 2012
Wydawca:: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:: metoda elementów skończonych
odporność balistyczna
pancerze
finite elements method
ballistic resistance
armour
Opis:: W pracy zaprezentowano wyniki eksperymentalno-numerycznych badań nad przebiciem konstrukcji warstwowych przez pocisk kalibru 7,62 mm. Przedstawione analizy poprzedzone były badaniami optymalizacyjnymi, których celem był dobór konfiguracji dodatkowej warstwy ochronnej dla pancerza pojazdu wojskowego. Badaniom poddano warstwy składające się z elementów wykonanych ze stali Armox 500T, aluminium PA11 i ceramiki Al₂O₃ . Przeprowadzono dwa typy badań: badania przebijalności pancerza przez pocisk i badania efektywności zastosowanych rozwiązań. Badania eksperymentalne rejestrowano przy użyciu szybkiej kamery z prędkością 180 000 zdjęć na sekundę. Analizy numeryczne przeprowadzono z wykorzystaniem kodu programu LS-Dyna. Kryterium oceny efektywności proponowanych rozwiązań stanowiła prędkość pocisku po przebiciu warstwy ochronnej.
The paper presents the results of experimental and numerical investigation of the perforation of ballistic panels by 7.62-mm projectiles. The presented analyses were preceded by optimization studies of the selection of an additional protective layer configuration for armour of military vehicle. The test panels were constructed of Armox 500T steel, PA11 aluminum, and Al₂O₃ ceramic elements. Experimental studies of panels’ penetration by a projectile and investigations of effectiveness of the proposed structures were performed. The studies were registered with the use of the camera for fast shooting (Fantom v12). An image was recorded with the frequency of 180.000 shoots per second. Numerical analysis was carried out with the use of the LS-Dyna system. The efficiency criterion of the proposed panels was the residual velocity of the projectile after perforation of the protective layers.
Źródło:: Biuletyn Wojskowej Akademii Technicznej; 2012, 61, 3; 84-96
1234-5865
Pojawia się w:: Biuletyn Wojskowej Akademii Technicznej
Dostawca treści:: Biblioteka Nauki

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