Spall Fracture of a VNZh-90 Alloy Under a Shock Wave Load

Based on the results of experiments carried out using a gas gun, data are obtained on the fracture of a VNZh-90 alloy (90% W-7% Ni-3% Fe) under a shock wave load in a pressure range of 2.5–4.0 GPa. Spall strength, which is a function of the degree of fracture and varies in a range of 1.00 to 1.25 GP...

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Veröffentlicht in:	Journal of applied mechanics and technical physics 2019-09, Vol.60 (5), p.949-955
Hauptverfasser:	Trunin, I. R., Tereshkina, I. A., Podurets, A. M., Simakov, V. G., Tkachenko, M. I., Bragunets, V. A., Balandina, A. N., Shestakov, E. E.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applications of Mathematics Classical and Continuum Physics Classical Mechanics Fluid- and Aerodynamics Gas guns Iron Mathematical Modeling and Industrial Mathematics Mechanical Engineering Nickel Physics Physics and Astronomy Shock waves
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Beschreibung
Zusammenfassung:	Based on the results of experiments carried out using a gas gun, data are obtained on the fracture of a VNZh-90 alloy (90% W-7% Ni-3% Fe) under a shock wave load in a pressure range of 2.5–4.0 GPa. Spall strength, which is a function of the degree of fracture and varies in a range of 1.00 to 1.25 GPa, and the nature of fracture are determined. Metallographic analysis is used to determine the damage parameter values. It is revealed that, under these conditions, the fracture comprises several stages, occurs in a (Ni-Fe) bond, and the tungsten particles do not fracture. It is shown that experimental results are in good agreement with the results of numerical calculations.
ISSN:	0021-8944 1573-8620
DOI:	10.1134/S0021894419050201