Rarefaction shock waves in iron from explosive loading

Ivanov, A. G.; Novikov, S. A.

doi:10.1007/bf00750354

Cited by 17 publications

(18 citation statements)

References 4 publications

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“…Zel'dovich and Raizer (2002) consider rarefaction (tensile) shocks in relation to expansion of precompressed materials that exhibit polymorphism. Experiments were performed by Ivanov and Novikov (1961) on iron to demonstrate such tensile shocks. Cristescu (1967) also considered the possibility of shocks in solids; in particular, he considered the possibility of tensile shocks in materials whose stress-strain diagram changes from concave to convex shape as well as the shock formed by unloading of a highly compressed material.…”

Section: Introductionmentioning

confidence: 99%

On the response of rubbers at high strain rates.

Niemczura

2010

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In this report, we examine the propagation of tensile waves of finite deformation in rubbers through experiments and analysis. Attention is focused on the propagation of one-dimensional dispersive and shock waves in strips of latex and nitrile rubber. Tensile wave propagation experiments were conducted at high strain-rates by holding one end fixed and displacing the other end at a constant velocity. A high-speed video camera was used to monitor the motion and to determine the evolution of strain and particle velocity in the rubber strips. Analysis of the response through the theory of finite waves and quantitative matching between the experimental observations and analytical predictions was used to determine an appropriate instantaneous elastic response for the rubbers. This analysis also yields the tensile shock adiabat for rubber. Dispersive waves as well as shock waves are also observed in free-retraction experiments; these are used to quantify hysteretic effects in rubber. 4 ACKNOWLEDGMENTS

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Section: Introductionmentioning

confidence: 99%

On the response of rubbers at high strain rates.

Niemczura

2010

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“…In Ref. 13, Ivanov and Novikov report on the observation of rarefaction shock waves in solid iron and steel. In 1983, Borisov and co-workers 14 claimed to have observed a negative shock wave in chlorotrifluoromethane ͑ClCF 3 , R-13͒ in close proximity to the critical point, where the initial state of the fluid and the state of the substance in the a͒ Electronic mail: p.colonna@tudelft.nl wave itself were always in the single-phase region.…”

Section: Introductionmentioning

confidence: 99%

Siloxanes: A new class of candidate Bethe-Zel’dovich-Thompson fluids

2007

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This paper presents a new class of Bethe-Zel'dovich-Thompson fluids, which are expected to exhibit nonclassical gasdynamic behavior in the single-phase vapor region. These are the linear and cyclic siloxanes, light silicon oils currently employed as working fluids in organic Rankine cycle turbines. State-of-the-art multiparameter equations of state are used to describe the thermodynamic properties of siloxanes and to compute the value of the fundamental derivative of gasdynamics ⌫, whose negative sign is the herald of nonclassical gasdynamics. Siloxane fluids starting from D 6 and cyclic siloxanes of greater complexity, and MD 3 M and linear siloxanes of greater complexity are predicted to exhibit a thermodynamic region in which ⌫ is negative and hence nonclassical wavefields are admissible. As an exemplary case, a nonclassical rarefaction shock wave propagating in fluid D 6 is studied to demonstrate the possibility of using siloxane fluids in nonclassical gasdynamic applications and to experimentally verify the existence of nonclassical wavefields in the vapor phase. The sensitivity of the present results to the considered thermodynamic model of the fluid is also briefly discussed.

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“…1 A detailed description of wave propagation in vapors exhibiting both positive and negative ⌫ regions, including the effects of viscosity and thermal conductivity, is given by Cramer and Kluwick. 25 Although experimental evidence of nonclassical gas dynamics in two-phase vapor/liquid [26][27][28][29][30] or solid/solid 31 systems has been documented in the past decades, no experimental proof of nonclassical phenomena in the vapor phase is currently available, with the only exception of the experiment of Borisov et al 5 in 1983, see also Kutateladze et al. 32 Yet the interpretation of the results presented in Refs.…”

Section: Introductionmentioning

confidence: 99%

Molecular interpretation of nonclassical gas dynamics of dense vapors under the van der Waals model

Colonna

Guardone

2006

Physics of Fluids

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The van der Waals polytropic gas model is used to investigate the role of attractive and repulsive intermolecular forces and the influence of molecular complexity on the possible nonclassical gas dynamic behavior of vapors near the liquid-vapor saturation curve. The decrease of the sound speed upon isothermal compression is due to the well-known action of the van der Waals attractive forces and this effect is shown here to be comparatively larger for more complex molecules with a large number of active vibrational modes; for these fluids isentropic flows are in fact almost isothermal. Contributions to the speed of sound resulting from intermolecular forces and the role of molecular complexity are analyzed in details for both isothermal and isentropic transformations. Results of the exact solution to the problem of a finite pressure perturbation traveling in a still fluid are presented in three exemplary cases: ideal gas, dense gas and nonclassical gas behavior. A classification scheme of fluids based on the possibility of exhibiting different gas dynamic behaviors is also proposed.

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Rarefaction shock waves in iron from explosive loading

Cited by 17 publications

References 4 publications

On the response of rubbers at high strain rates.

On the response of rubbers at high strain rates.

Siloxanes: A new class of candidate Bethe-Zel’dovich-Thompson fluids

Molecular interpretation of nonclassical gas dynamics of dense vapors under the van der Waals model

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