Influence of conical projectile diameter on perpendicular impact of thin steel plate

Rusinek, Alexis; Rodríguez-Martínez, J.A.; Árias, A.; Klepaczko, J.R.; López-Puente, J.

doi:10.1016/j.engfracmech.2008.01.011

Cited by 77 publications

(39 citation statements)

References 40 publications

(66 reference statements)

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“…Nowadays several publications can be found in the international literature dealing with high strain rate behaviour of different metallic materials directly related to engineering applications like automotive (Rusinek et al, 2008a;Larour et al, 2007;Mae et al, 2007;Smerd et al, 2005), civil (Kobayashi et al, 2008;Shanmugama et al, in press;Zaera et al, 2002), aeronautical (Fasanella and Jackson, 2001;Piekutowski, 1999) or naval (Nemat Nasser and Guo, 2003;Martineau et al, 2004) industries. Particularly, the behaviour of high strength sheet metals 1 when subjected to high velocity impact by rigid projectiles has raised a considerable interest as it is illustrated in the works (Borvik et al, 2002a,b;Gupta et al, 2006Gupta et al, , 2007Ar ias et al, 2008;Rusinek et al, 2008b). A common charac teristic of most of those works is that during experiment of perforation, specimen remains at room temperature during a high strain rate deformation.…”

Section: Introductionmentioning

confidence: 99%

“…This relation is commonly used in numerical analyses of dynamic processes (Mae et al, 2007;Smerd et al, 2005;Borvik et al, 2002bBorvik et al, , 1999Gupta et al, 2006Gupta et al, , 2007Arias et al, 2008;Rusinek et al, 2008b;Teng et al, in press). Considerable efforts have been made in the past to identify the material constants necessary to apply the model for variety of different metallic materials.…”

Section: The Johnson Cook (Jc) Modelmentioning

confidence: 99%

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Modelling of thermo-viscoplastic behaviour of DH-36 and Weldox 460-E structural steels at wide ranges of strain rates and temperatures, comparison of constitutive relations for impact problems

Klepaczko

Rusinek

Rodríguez-Martínez

et al. 2009

Mechanics of Materials

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a b s t r a c tIn this paper, the thermo viscoplastic behaviour of DH 36 and Weldox 460 E steels is ana lyzed at wide ranges of strain rates and temperatures. These materials are commonly used for naval applications. Thus, they may be subjected to a wide range of exploitation temper atures and at the same time to high strain rates due to accidental impact or explosion. The thermo viscoplastic behaviour of these materials has been modeled by application of RK , and 77 K to about 1000 K). Especially for high strain rate level, the predictions of RK model are notably more precise than those predic tions obtained using PB and JC models. This proof converts RK model in suitable for mod eling impact problems. Finally, numerical simulations of perforation process of DH 36 and Weldox 460 E steel plates impacted by conical non deformable projectiles have been car ried out using RK and JC models. Numerical results using FE simulations have revealed sub stantial influence of the constitutive relation concerning the ballistic limit, residual velocity and failure time predictions for the same initial and boundary conditions.

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Section: Introductionmentioning

confidence: 99%

Section: The Johnson Cook (Jc) Modelmentioning

confidence: 99%

Modelling of thermo-viscoplastic behaviour of DH-36 and Weldox 460-E structural steels at wide ranges of strain rates and temperatures, comparison of constitutive relations for impact problems

Klepaczko

Rusinek

Rodríguez-Martínez

et al. 2009

Mechanics of Materials

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“…A constant friction Table 3 Physical constants for steel alloys. coefficient value m 0.1 has been used to define the contact projectile/plate [16].…”

Section: Finite Element Simulation Of the Impact Process In Order To mentioning

confidence: 99%

Temperature measurements on ES steel sheets subjected to perforation by hemispherical projectiles

Rodríguez-Martínez

Rusinek

Chévrier

et al. 2010

International Journal of Impact Engineering

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a b s t r a c tIn this paper is reported a study on the behaviour of ES mild steel sheets subjected to perforation by hemispherical projectiles. Experiments have been conducted using a pneumatic cannon within the range of impact velocities 5m=s V 0 60m=s. The experimental setup allowed evaluating initial velocity, failure mode and post mortem deflection of the plates. The tests have been recorded using high speed infrared camera. It made possible to obtain temperature contours of the specimen during impact. Thus, special attention is focussed on the thermal softening of the material which is responsible for instabilities and failure. Assuming adiabatic conditions of deformation, the increase of temperature may be related to the plastic deformation. The critical strain leading to target failure is evaluated coupling temperature measurements with numerical simulations and with analytical predictions obtained by means of the Rusinek Klepaczko constitutive relation [Rusinek, A., Klepaczko, J.R. Shear testing of sheet steel at wide range of strain rates and a constitutive relation with strain rate and temperature dependence of the flow stress. Int J Plasticity. 2001; 17, 87 115]. It has been estimated that the process of localization of plastic deformation which leads to target failure involves local values close to 3 p f z1 for the boundary value problem approached. Subsequently, this failure strain level has been applied to simulate the perforation process and the numerical results obtained show satisfactory agreement with the experiments in terms of ballistic limit, temperature increase and failure mode of the target.

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“…It was found that the hemispherical-nosed impactor was the least efficient, followed by conical and two double nosed. In the work by Rusinek et al [35] primary focus was on studying the conical projectile diameter in relation to its perforation performance. Numerical and experimental analysis revealed that a linear relation existed between ballistic limit velocity and projectile diameter.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on ballistic resistance of aluminium multi-layered panels impacted by improvised projectiles

2017

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This paper presents a numerical study of perforation of the aluminium multi-layered targets impacted by steel projectiles in the shape of a ball, nut and nail. For the construction of the protective panels arc-, rectangular-, V-and U-shaped sheets of metal were considered. During the tests the panel thickness was constant at 160 mm. The panels were composed of 1.5-mm-thick aluminium sheets, and the initial speed of debris was 500 m/s. A comprehensive numerical study indicated the shape of the layer that had superior ballistic resistance and the best strength-to-weight ratio. Computational analyses were also used to investigate the influence of thermal softening and strain rate hardening in the Johnson-Cook constitutive model on the ballistic performance of layered targets. The number of layers required to stop the penetrating objects was compared for the rigid and deformable projectiles. Based on the comparative studies, some guidelines for engineering tasks involving exploration of number of possible technical solutions were proposed.

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Influence of conical projectile diameter on perpendicular impact of thin steel plate

Cited by 77 publications

References 40 publications

Modelling of thermo-viscoplastic behaviour of DH-36 and Weldox 460-E structural steels at wide ranges of strain rates and temperatures, comparison of constitutive relations for impact problems

Modelling of thermo-viscoplastic behaviour of DH-36 and Weldox 460-E structural steels at wide ranges of strain rates and temperatures, comparison of constitutive relations for impact problems

Temperature measurements on ES steel sheets subjected to perforation by hemispherical projectiles

Numerical investigation on ballistic resistance of aluminium multi-layered panels impacted by improvised projectiles

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