High-temperature pressure-shear plate impact experiments on ofhc copper

Frutschy, Kristopher; Clifton, R. J.

doi:10.1016/s0022-5096(98)00055-6

Cited by 64 publications

(22 citation statements)

References 18 publications

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“…Compression-shear loading is attained by inclining the flyer and specimen with respect to the axis of the projectile in the same angle. Other researchers [4][5][6][7][8][9] have continuously improved this technique. However, pressure-shear plate impact testing is limited to fine-grained materials because grain size must be smaller than specimen thickness to ensure a representative average polycrystalline response in the measurement.…”

Section: Introductionmentioning

confidence: 99%

Technique for Combined Dynamic Compression–Shear Testing of PBXs

Zhao

Lin

et al. 2011

Exp Mech

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We modify the split Hopkinson pressure bar and propose a compression-shear experimental method to investigate the dynamic behavior of polymer-bonded explosives (PBXs). The main apparatuses used include an incident bar with a wedge-shaped end and two transmission bars. We employ Y-cut quartzes with a rotation angle of 17.7°to measure the shear force and an optical system for shear strain measurement. A PBX with a density of 1.7 g/ cm 3 is investigated using the proposed method. Experimental results show that the specimen endures both compression and shear failure. Compression failure stress rises, and shear failure stress decreases as the strain rate increases. The sequences of shear and compression failure times are various at different strain rates. Based on the maximum shear failure criterion, we conclude that these phenomena are related to the experimental loading path.

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Section: Introductionmentioning

confidence: 99%

Technique for Combined Dynamic Compression–Shear Testing of PBXs

Zhao

Lin

et al. 2011

Exp Mech

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“…The OHFC copper used in the cylinder-test simulations was modeled using the original Johnson-Cook constitutive relation (Johnson and Cook, 1983) with material parameters from Johnson and Cook (1985) and Frutschy and Clifton (1998). An alternative approach would be to fit the parameters in the particle method directly to the JWL-EOS for C-4 given in Souers et al (1996), but since the cylinder test in any case was used to extract the JWL-EOS data the proposed approach is preferred.…”

Section: Modeling Of High Explosive (C-4) and Airmentioning

confidence: 99%

A discrete particle approach to simulate the combined effect of blast and sand impact loading of steel plates

Børvik

Olovsson

Hanssen

et al. 2011

Journal of the Mechanics and Physics of Solids

151

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“…Different methods for the material model calibration starting from experimental data were also suggested. A lot of different types of materials have been described using the JeC model, such as steels [17,18], aluminum alloys [19,20], titanium alloys [21e23], OFHC copper [24,25], tungsten alloy [26] and super alloys [27], with mainly application in automotive, aerospace, nuclear and military fields. In some cases, the experimental data were fitted on the basis of the analytical formulation of the material model, while other works performed the calibration of FEM models starting from experimental results.…”

Section: Materials Modelmentioning

confidence: 99%

Parameters identification in strain-rate and thermal sensitive visco-plastic material model for an alumina dispersion strengthened copper

Scapin

Peroni

2012

International Journal of Impact Engineering

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a b s t r a c tThe main objective of this paper is getting strain-hardening, thermal and strain-rate parameters for a material model in order to correctly reproduce the deformation process that occurs in high strain-rate scenario, in which the material reaches also high levels of plastic deformation and temperature. In particular, in this work the numerical inverse method is applied to extract material strength parameters from experimental data obtained via mechanical tests at different strain-rates (from quasi-static loading to high strain-rate) and temperatures (between 20 C and 1000 C) for an alumina dispersion strengthened copper material, which commercial name is GLIDCOP Ò . Thanks to its properties GLIDCOP Ò finds several applications in particle accelerator technologies, where problems of thermal management, combined with structural requirements, play a key role. Currently, it is used for the construction of structural and functional parts of the particle beam collimation system. Since the extreme condition in which the material could operate, it is fundamental to characterize it in a wide range both in strain-rate and temperature.The numerical inverse method used in this work is particularly useful to reproduce experimental results when the stressestrain fields in the specimen cannot be correctly described via analytical models. Furthermore this procedure is useful to take into account thermal phenomena generally affecting high strain-rate tests in which the heat conversion of plastic work produces an adiabatic overheating. So, the applicability of this method is particularly indicated in special fields, such as aerospace engineering, ballistic, crashworthiness studies or particle accelerator technologies.The attention is focused on evaluating the most suitable strategy of material model parameters optimization to obtain the best fit between experimental data and numerical results. In this regards, it is important to determine which material model coefficients can be considered as optimization variables and for each of them the most suitable range of variation.

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High-temperature pressure-shear plate impact experiments on ofhc copper

Cited by 64 publications

References 18 publications

Technique for Combined Dynamic Compression–Shear Testing of PBXs

Technique for Combined Dynamic Compression–Shear Testing of PBXs

A discrete particle approach to simulate the combined effect of blast and sand impact loading of steel plates

Parameters identification in strain-rate and thermal sensitive visco-plastic material model for an alumina dispersion strengthened copper

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