Flow and fracture behavior of high-strength armor steel PROTAC 500

Trajkovski, Jovan; Kunc, Robert; Pepel, Vili; Prebil, Ivan

doi:10.1016/j.matdes.2014.10.030

Cited by 29 publications

(13 citation statements)

References 32 publications

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“…Comparing with other constitutive relations, the model proposed by Johnson and Cook [ 6 ], which describes the material stress response at large strain, various strain rates and elevated temperatures, is widely used in impact problems. Also, they provided material parameters of 12 different materials, Hu et al [ 7 ] determined those for AerMet 100 steel, Feng et al [ 8 ] for AZ31B magnesium alloy, Trajkovski et al [ 9 ] for armor steel PROTAC 500. Singh et al [ 10 ] derived the J-C parameters based on the dynamic increase factors of strengths for CP800 steel.…”

Section: Introductionmentioning

confidence: 99%

Flow and fracture behavior of aluminum alloy 6082-T6 at different tensile strain rates and triaxialities

Chen

Peng

et al. 2017

PLoS ONE

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This study aims to investigate the flow and fracture behavior of aluminum alloy 6082-T6 (AA6082-T6) at different strain rates and triaxialities. Two groups of Charpy impact tests were carried out to further investigate its dynamic impact fracture property. A series of tensile tests and numerical simulations based on finite element analysis (FEA) were performed. Experimental data on smooth specimens under various strain rates ranging from 0.0001~3400 s-1 shows that AA6082-T6 is rather insensitive to strain rates in general. However, clear rate sensitivity was observed in the range of 0.001~1 s-1 while such a characteristic is counteracted by the adiabatic heating of specimens under high strain rates. A Johnson-Cook constitutive model was proposed based on tensile tests at different strain rates. In this study, the average stress triaxiality and equivalent plastic strain at facture obtained from numerical simulations were used for the calibration of J-C fracture model. Both of the J-C constitutive model and fracture model were employed in numerical simulations and the results was compared with experimental results. The calibrated J-C fracture model exhibits higher accuracy than the J-C fracture model obtained by the common method in predicting the fracture behavior of AA6082-T6. Finally, the Scanning Electron Microscope (SEM) of fractured specimens with different initial stress triaxialities were analyzed. The magnified fractographs indicate that high initial stress triaxiality likely results in dimple fracture.

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Section: Introductionmentioning

confidence: 99%

Flow and fracture behavior of aluminum alloy 6082-T6 at different tensile strain rates and triaxialities

Chen

Peng

et al. 2017

PLoS ONE

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“…It is relatively simple to obtain accurate material parameters. For example, Trajkovski et al 74 present a methodology for obtaining JC constants for a new material (PROTAC 500 steel), empirically, through quasistatic temperature-controlled testing.…”

Section: Constitutive Modelsmentioning

confidence: 99%

A review of the integrity of metallic vehicle armour to projectile attack

Ronan

O’Donoghue

Lenihan

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part L:

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This article presents a review of engineering and design aspects relevant to the mechanical and structural integrity of military vehicular armour, including materials-related technologies. Theoretical, experimental and numerical techniques for assessment are discussed and evaluated. A number of prominent material constitutive models are comparatively assessed.The Johnson-Cook model is shown to be particularly consistent in terms of agreement with experimental data, identification of material constants and ease of application. The article also discusses different numerical codes used and their relevance over time. Finally, it is argued that there is a need for a materials design tool for military vehicular armour.

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“…The material parameters for PROTAC 500 regarding the J-C strength, as well as fracture model, are shown in Table 1 (Trajkovski et al, 2015).…”

Section: Materials Modelsmentioning

confidence: 99%

Parametric analysis study of blast loaded armour V-plates

Trajkovski

Kunc

Prebil

2017

International Journal of Protective Structures

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Continuous improvement in the hull floor of light armoured vehicles in terms of landmine response and crew safety is required among other things, in order to meet higher demands in the market and to obtain a product safety certificate. Previous research studies have shown that V-shaped hull floors of light armoured vehicles have a better response to blast loading in terms of saving the lives of vehicle crews or reducing the number of injuries. For this reason, parametric and design optimization analyses of V-shaped hull floors play an important role in achieving an optimal, safe and cost-effective light armoured vehicle design. However, this kind of structural optimization is complex, involving a multidisciplinary fluid-structure interaction processes, as well as large structural deformations. This article presents the results of the metamodelbased parametric analysis of blast loaded armour V-plates. The contribution of most important variable parameters such as plate angle, plate thickness, explosive mass and stand-off distance to blast loading and blast response parameters was examined using a combined smooth particle hydrodynamic-finite element numerical model. The results showed that the plate angle has the greatest impact on all response parameters of the metamodel, followed by the stand-off distance and plate thickness.

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Flow and fracture behavior of high-strength armor steel PROTAC 500

Cited by 29 publications

References 32 publications

Flow and fracture behavior of aluminum alloy 6082-T6 at different tensile strain rates and triaxialities

Flow and fracture behavior of aluminum alloy 6082-T6 at different tensile strain rates and triaxialities

A review of the integrity of metallic vehicle armour to projectile attack

Parametric analysis study of blast loaded armour V-plates

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