Backplane response of ballistically impacted composites

Hoof, Jack van; Worswick, M. J.; Williams, Kevin

doi:10.1051/jp4:20009110

Cited by 6 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A comparison of the V 50 ballistic limit between the present result and those available in literature 22,34,35. …”

supporting

confidence: 56%

Finite element simulation of the behaviours of laminated armour systems against blast wave and projectile dynamic impacts

Tan

2012

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

For investigating the blast wave and fragment/projectile protective performance of laminated armour systems, backed with, or without, air spacers, two-dimensional finite element models were developed using the commercial finite element software Autodyn. In this investigation, four differently shaped projectiles, including flat-faced cylindrical projectile, blunt cylindrical projectile, ogive-nose projectile and spherical projectile, were considered. The blast load was simplified as a triangular pulse. For validating the present models, a comparison of the present numerical results with the analytical and expermental results available in literature was conducted. A good agreement between them was noted. Subsequently, a parametric study was conducted to examine the effects of the key parameters on the dynamic responses of an armour systems against blast wave or projectile impact. The results indicated that the residual (or exit) velocity of projectile, the rear surface deflection of the armour system against a projectile impact and the peak value of the pressure measured in a water body simultant are dependent on the armour component property and configuration. Under the assumption that the components of laminated armour systems are perfectly bonded together and remain so on impact, the results showed that the inclusion of an air spacer onto the rear surface of the armour system may play an important role in reducing the peak pressure, residual (or exit) velocity of the projectile and the rear surface deflection of the armour system.

show abstract

“…A comparison of the V 50 ballistic limit between the present result and those available in literature 22,34,35. …”

supporting

confidence: 56%

Finite element simulation of the behaviours of laminated armour systems against blast wave and projectile dynamic impacts

Tan

2012

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

show abstract

“…Por otro lado, de los trabajos que poseen una metodología numérica presentados en la tabla anterior (Tabla 2.3) se denota en primer lugar que solamente cuatro autores validan sus modelos numéricos con ensayos experimentales propios realizados previamente [46,47,50,51]. Otros autores comparan sus resultados numéricos con datos de otros trabajos previos, como Tan et al [53] y Rodriguez-Millan et al [56] donde la calibración y validación del modelo numérico de Kevlar 29 se realiza reproduciendo los resultados obtenidos por Van Hoof et al [52].…”

Section: Asociación Vpamunclassified

“…Cabe destacar en la tabla 2.3, el trabajo desarrollado por Van Hoof et al [52] por tratarse del primer trabajo numérico de impacto en laminados de Kevlar/PVB orientado a las protecciones personales, sirviendo como punto de partida para diversas investigaciones relacionadas. Resulta de interés de nuevo el trabajo de Gower et al [47] debido a que es elúnico que emplea como material de estudio Kevlar 129/PVB definiendo las propiedades mecánicas correspondientes para su aplicación en modelos numéricos.…”

Section: Asociación Vpamunclassified

Ballistic performance of aramid composite combat helmet for protection against small projectiles

Rubio

Rodríguez-Millán

Marco

et al. 2019

Composite Structures

View full text Add to dashboard Cite

show abstract

“…T HICK-SECTION COMPOSITE MATERIALS are frequently used under dynamic loading conditions but their behavior is still not clearly understood. Impact loading of monolithic laminates has been the subject of several investigations, e.g., for glass/epoxy and graphite/epoxy [1][2][3][4][5][6][7][8][9][10][11]. Similarly, the penetration or perforation of composites has also been studied [12,13], but severe complications arise whenever widely dissimilar materials are in intimate contact, because their differing impedances cause complex wave reflection and transmission phenomena at each interface encountered.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Modeling Studies of Stress Wave Propagation in Multilayer Composite Materials: Low Modulus Interlayer Effects

Taşdemirci¹,

Hall

2005

Journal of Composite Materials

View full text Add to dashboard Cite

The behavior of a multilayer material at high strain rate is investigated by a combination of experimental and numerical techniques. It is shown that, although the Split Hopkinson Pressure Bar (SHPB) at first appears unsuitable for such applications, it is a valuable tool to validate finite element modeling. The feasibility and usefulness of modeling the stress wave propagation in complex multilayer materials was thus demonstrated. The one-dimensional stress state usually assumed for conventional SHPB testing is inapplicable, but it is shown that both numerical and experimental results can nevertheless be coupled for a complete understanding of the wave propagation characteristics. The specific material consists of ceramic face plate and glass/epoxy backing plate with a low modulus interlayer. It is shown that the lateral constraint of an interlayer with a significant positive Poisson’s ratio allows relatively easy transmission of the elastic compressive wave into the backing plate, whereas a low modulus interlayer with an almost zero Poisson’s ratio drastically reduces the ease of elastic wave transmission. The implications for the reduction in damage of the backing layer are discussed. Numerical modeling clearly shows that the severe stress inhomogeneities and discontinuities exist and these may have serious consequences regarding mechanical and other properties. The stress states inside the components are presented here.

show abstract

Backplane response of ballistically impacted composites

Cited by 6 publications

References 0 publications

Finite element simulation of the behaviours of laminated armour systems against blast wave and projectile dynamic impacts

Finite element simulation of the behaviours of laminated armour systems against blast wave and projectile dynamic impacts

Ballistic performance of aramid composite combat helmet for protection against small projectiles

Experimental and Modeling Studies of Stress Wave Propagation in Multilayer Composite Materials: Low Modulus Interlayer Effects

Contact Info

Product

Resources

About