Analytical modelling of normal and oblique ballistic impact on ceramic/metal lightweight armours

Zaera, R.; Sánchez‐Gálvez, V.

doi:10.1016/s0734-743x(97)00035-3

Cited by 137 publications

(95 citation statements)

References 9 publications

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“…For example, bilay ered armours, made of ceramic tiles as front plate and a ductile material (steel, aluminium alloy, fibre reinforced composite or a polymeric material) as backing plate, have been successfully em ployed [1,2] to improve the impact behaviour of protections (and to decrease their weight). The front layer (e.g., ceramic) aims at breaking or blunting the hard core of the projectile and spreading out the energy of impact by forming a cone shaped cracking zone.…”

Section: Introductionmentioning

confidence: 99%

Relationship between static bending and compressive behaviour of particle-reinforced cement composites

Árias

Forquin

Zaera

2008

Composites Part B: Engineering

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a b s t r a c tInnovative particle reinforced materials made of alumina particles and cement based matrix were designed, manufactured and tested to evaluate the potential use of ceramic aggregates in concretes.These particle reinforced composites were tested in three point bending and uniaxial compression con ditions to determine the influence of the shape and size of the ceramic inclusions, and the addition of sil ica fume on the mechanical properties. A specific methodology combining post mortem observations with a statistical analysis of tensile failure stresses (average strength and Weibull modulus) was con ducted to deduce the origin of failure for each cement based composite (porosity or ceramic particles/ matrix decohesion). A remarkable correlation is observed between bending failure stress level and the average strength measured under uniaxial compression loading. As main conclusion, addition of alumina particles in a mortar appears to strengthen or to weaken the composite depending on whether silica fume is used in the cementitious matrix.

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Section: Introductionmentioning

confidence: 99%

Relationship between static bending and compressive behaviour of particle-reinforced cement composites

Árias

Forquin

Zaera

2008

Composites Part B: Engineering

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“…Theoretically, under dynamic load not only longitudinal wave causing radial and shear stresses is created, but also transverse wave travels toward rear surface (32). In this case, longitudinal wave causing the transient behaviour seemed to be dominated in HCC slabs, which, in turn, the transverse wave was aggravated.…”

Section: Global Dynamic Responsementioning

confidence: 97%

Performance of hybrid cement composite elements under drop-weight impact load

Nguyen¹,

Río²,

Sánchez‐Gálvez³

2014

Mater. construcc.

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ABSTRACT:The performance, under drop-weight impact load, of hybrid cement composite (HCC) elements, consisting of a top layer of plain concrete (PC) and a bottom layer of fibre reinforced concrete (FRC), in comparison with full-depth FRC and PC was studied. Apart from improving the tensile capacity of PC and saving fibre steel reinforcements of FRC, the results showed that HCC can effectively control the deformations and enhance the impact performance of the structural members as its outcomes were similar to that of a full-depth FRC. The analytical studies using Hughes empirical formulae (HEF) and yield line theory (YLT) adopted to investigate the practical use of HCC showed that they are applicable for design such HCC elements against impacts. KEYWORDS: RESUMEN:Comportamiento de elementos estructurales de compuestos híbridos base cemento frente a impacto de torre de caída. Se estudió el comportamiento, frente a impacto de torre de caída, de elementos híbridos base cemento (HCC), formados por una capa superior de hormigón en masa (PC) y una capa inferior de hormigón reforzado con fibras (FRC) en comparación con elementos análogos íntegramente fabricados con FRC y PC. Además de proporcionar una mejora en la resistencia frente a flexo-tracción de los PC y un ahorro en refuerzo usando fibras de acero en el caso de los FRC, los resultados mostraron que el HCC puede controlar eficazmente las deformaciones y mejorar el rendimiento frente a impacto de los elementos estructurales ya que sus resultados fueron análogos a la de los FRC. Los estudios analíticos, utilizando HEF e YLT, adoptados para investigar el uso práctico de los HCC mostraron que los mismos son aplicables para el diseño de estos elementos frente a impacto.

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“…The use of ceramic/metal bi-layer armor structures provides lighter designs compared to monolithic metal armors showing the same or better ballistic protection. Several researchers have investigated the ballistic impact response of different ceramic/metal armor structures using experimental, numerical and analytical methods or combinations of these methods [Zaera and Sánchez-Gálvez (1998), Zaera et al (2000), Lee and Yoo (2001), Arias et al (2003), Gonçalves et al (2004), Mahdu et al (2005), Chi et al (2013), Serjouei et al (2015), Tang and Wen (2017)]. …”

Section: Introductionmentioning

confidence: 99%

Ballistic Impact Simulation of Ceramic/Metal Armor Structures

Arslan¹,

Güneş²

2017

Uluslararası Muhendislik Arastirma Ve Gelistirme Dergisi

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The study presents a comparative numerical investigation on ballistic performance of ceramic/metal armor structures. 2D axisymmetric numerical model was developed for ballistic impact simulations using LS-DYNA ® finite element software. The armor structures included combinations of boron carbide (B4C), Al6061-T6 and 4340 steel constituents. The interfaces in the armor structure were modelled with an epoxy resin adhesive. In order to define proper material behavior, Johnson-Holmquist-Ceramics material model for B4C and Plastic-Kinematic material model for Al6061-T6, 4340 steel and epoxy resin was used. The armor structures were subjected to 7.62 mm ogive-nosed steel projectile impact. In the first section, the influence of back plate material on the ballistic performance of the armor structure for bi-layers ceramic/metal configuration (ceramic front face and metal back plate) was investigated for Al6061-T6 and 4340 steel materials under same thickness and areal density. In the second section, the effect of removing half thickness of the metal constituent from the back plate and placing on the front face was investigated for both Al6061-T6 and 4340 steel materials. Finally, the influence of adhesive thickness on the ballistic performance of the armor structure was investigated. Perforation response of the armor structures were examined in terms of residual velocity of the projectile and damage mechanisms of the armor structure.

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Analytical modelling of normal and oblique ballistic impact on ceramic/metal lightweight armours

Cited by 137 publications

References 9 publications

Relationship between static bending and compressive behaviour of particle-reinforced cement composites

Relationship between static bending and compressive behaviour of particle-reinforced cement composites

Performance of hybrid cement composite elements under drop-weight impact load

Ballistic Impact Simulation of Ceramic/Metal Armor Structures

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