Preliminary study of ballistic impact on an industrial tank: Projectile velocity decay

Lecysyn, Nicolas; Dandrieux, Aurélia; Heymes, Frédéric; Slangen, Pierre; Munier, Laurent; Lapébie, Emmanuel; Gallic, Christian Le; Dusserre, Gilles

doi:10.1016/j.jlp.2008.06.006

Cited by 29 publications

(16 citation statements)

References 12 publications

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“…Penetration of a high-speed projectile (>1000 m/s) was investigated in term of the perforation a vessel filled with toxic liquid by Lecysyn et al [5]. The decay of projectile velocity and projectile-target interactions were examined with the initial conditions of the target.…”

Section: Introductionmentioning

confidence: 99%

Farklı Uç Şeklindeki Mermiler için Hız Dağılımı ve Türbülans Enerjisinin Araştırılması

Doğru¹

2017

Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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Velocity distribution on the projectile is a critical specification in terms of the range and perforation concept of the projectile. The shape of the projectile affects the amount of perforation energy. In this study, velocity distribution and turbulence energy are investigated for the projectiles on different tip shapes by using Solidworks Flow Simulation. Three different projectile nose shapes are examined in this study (sharpen, semi-rounded and rounded). Initial velocity is accepted to be 500 m/s for all situations. It is determined that the velocity is less affected on the sharpen type projectile where the penetration becomes easier. At the end of this study, velocity and pressure distribution on the penetrators in different tip geometries are obtained. The maximum velocity decrease at the tip of penetrator is found to be as 57.5% for the rounded type projectile. When the results are investigated, it is clear that velocity loss is about 22.2% in sharp type projectile.Keywords: Velocity distribution, Turbulent energy, Projectile, Flow simulation, Tip geometry Farklı Uç Şeklindeki Mermiler için Hız Dağılımı ve Türbülans Enerjisinin Araştırılması ÖzMermi üzerindeki hız dağılımı, merminin menzili ve delip geçme konsepti açısından kritik bir spesifikasyondur. Merminin şekli, delinme enerjisinin miktarını etkilemektedir. Bu çalışmada Solidworks akış simülasyon programı kullanılarak, farklı uç şekillerindeki mermiler için hız dağılımı ve türbülans enerjisi araştırılmıştır. Bu çalışmada üç farklı mermi uç şekli incelenmiştir. (Keskin, Yarı yuvarlatılmış, Yuvarlatılmış). Başlangıç hızı tüm durumlar için 500 m/s olarak kabul edilmiştir. Delip geçmenin daha kolay hale geldiği keskin uçlu mermilerin hızdan daha az etkilendiği tespit edilmiştir. Bu çalışmanın sonucunda farklı uç geometrilerine sahip mermiler üzerindeki hız ve basınç dağılımı elde edilmiştir. Mermi ucundaki en fazla hız düşüşü yuvarlatılmış mermi için %57,5 olarak bulunmuştur. Sonuçlar incelendiğinde, hız kaybının keskin tipli mermilerde ve yaklaşık %22,2 olarak bulunduğu açıkça görülmektedir.

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Section: Introductionmentioning

confidence: 99%

Farklı Uç Şeklindeki Mermiler için Hız Dağılımı ve Türbülans Enerjisinin Araştırılması

Doğru¹

2017

Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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“…High velocity impacts on fluid filled containers are of great interest for different industrial fields such as safety of industrial facilities or road haulage, where containers are commonly used to store fuel or dangerous products. In those cases, an impact in the vessel may produce the failure of the tank and could result in a serious consequences on the environment or even toxic and flammability effects [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…As an example of the increasing interest on solving industrial fluid-structure problems the works of Petitpas et al [49] or Lecysyn et al [22,23] can be mentioned, in which a ballistic impact on an industrial tank, filled with a toxic fluid, is studied.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of CFRP fluid-filled tubes subjected to high-velocity impact

Artero-Guerrero

Pernas-Sánchez

Varas

et al. 2013

Composite Structures

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In recent years, vulnerability against high-velocity impact loads has become an increasingly critical issue in the design of composite aerospace structures. The effects of Hydrodynamic Ram (HRAM), a phenomenon that occurs when a high-energy object penetrates a fluid-filled container, are of particular concern in the design of wing fuel tanks for aircraft because it has been identified as one of the important factors in aircraft vulnerability. The projectile transfers its momentum and kinetic energy through the fluid to the surrounding structure, increasing the risk of catastrophic failure. In the present paper, the commercial finite-element code * Corresponding author. Fax number: 34 916248331. E-mail address:jlpuente@ing.uc3m.es 1 ABAQUS/Explicit has been used to simulate an HRAM event due to the impact of a steel spherical projectile into a water-filled woven CFRP square tube. In order to simulate the fluid-structure interaction, the Coupled Eulerian Lagrangian (CEL) approach is used. Experimental tests which indicate the pressure at different points of the fluid, strains of the walls and cavity evolution for different impact velocities are compared with the numerical results in order to assess the validity and accuracy of CEL technique in reproducing such a complex phenomenon. Also, several numerical impacts at different initial projectile velocities are performed to study its influence in the HRAM phenomenon.

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“…As an example of the increasing interest on solving industrial fluid-structure problems, it is worth to mention the recent works of Petitpas et al [32] and Lecysyn et al [23,24] in which a ballistic impact on an industrial tank, filled with a toxic fluid and made of steel, is studied. The authors propose an analytical model to reproduce the behaviour of the projectile on the fluid and study its influence on the toxic liquid ejection and the droplets generated.…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling of partially filled aircraft fuel tanks submitted to Hydrodynamic Ram

Varas

Zaera

López-Puente

2012

Aerospace Science and Technology

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a b s t r a c t Keywords:Hydrodynamic Ram Fluid-structure interaction Aircraft vulnerability Impact Fuel tank Hydrodynamic Ram (HRAM) is a phenomenon that occurs when a high-kinetic energy object penetrates a fluid-filled container. The projectile transfers its momentum and kinetic energy through the fluid to the surrounding structure, increasing the risk of catastrophic failure and excessive structural damage. This is of particular concern in the design of wing fuel tanks for aircraft since it has been identified as one of the important factors in aircraft vulnerability. Usually the HRAM phenomenon is analyzed considering completely filled tanks, but its effect on partially filled containers should also be taken into account due to the fact that tanks use to be impacted under these conditions. In the present paper, the commercial finite element code LS-DYNA has been used to simulate an HRAM event created by a steel spherical projectile impacting a partially water-filled aluminium square tube. The ALE formulation is employed to reproduce the event. Experimental tests which indicate the pressure at different points of the fluid, displacement of the walls and cavity evolution for different impact velocities, are compared with the numerical results in order to assess the validity and accuracy of the ALE technique in reproducing such a complex phenomenon.

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Preliminary study of ballistic impact on an industrial tank: Projectile velocity decay

Cited by 29 publications

References 12 publications

Farklı Uç Şeklindeki Mermiler için Hız Dağılımı ve Türbülans Enerjisinin Araştırılması

Farklı Uç Şeklindeki Mermiler için Hız Dağılımı ve Türbülans Enerjisinin Araştırılması

Numerical analysis of CFRP fluid-filled tubes subjected to high-velocity impact

Numerical modelling of partially filled aircraft fuel tanks submitted to Hydrodynamic Ram

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