The Equation of State of Solids From Shock Wave Studies

McQueen, R. G.; Marsh, S.P.; Taylor, John W.; Fritz, J. N.; Carter, W.J.

doi:10.1016/b978-0-12-408950-1.50012-4

Cited by 620 publications

(381 citation statements)

References 26 publications

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“…As discussed by Tielens et al (1994), the threshold vapourisation energy density, v , is related to the binding energy and can be estimated as where c 0 is the speed of sound in the target, ρ its density and s a parameter introduced by McQueen et al (1970) and estimated to be s ≈ 1.9 for graphite/a-C materials. We assume that c 0 v th and confirm the validity of this assumption below.…”

Section: Appendix B: Shattering and Vapourisation Parameters For A-c(mentioning

confidence: 99%

A re-evaluation of dust processing in supernova shock waves

Bocchio

Jones

Slavin

2014

A&A

109

154

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Context. There is a long-standing and large discrepancy between the timescale for dust formation around evolved stars and the rapid dust destruction timescale in interstellar shocks. Aims. We use our latest estimates for dust processing to re-evaluate the dust destruction efficiency in supernova triggered shock waves, estimate the dust lifetime, and calculate the emission and extinction from shocked dust. Methods. We modelled the sputtering and fragmentation of grains in interstellar shocks for shock velocities between 50 km s −1 and 200 km s −1 . We constrained the dust destruction using our recent dust model. Finally, we coupled our code to the DustEM code in order to estimate the emission and extinction from the dust post-shock. Results. Carbonaceous grains are quickly destroyed, even in a 50 km s −1 shock, leading to a shorter lifetime than in previous studies. Silicate grains appear to be more resilient, but the new destruction lifetime that we find is similar to previous studies and short compared to the dust injection timescale. Conclusions. The calculated fraction of elements locked in grains is not compatible with the observed values and therefore implies the re-formation of dust in the dense regions of the interstellar medium. Better modelling of the silicate sputtering together with hydrodynamical simulations of interstellar shocks, appears to reduce the silicate destruction and may close the destruction-formation timescale gap.

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Section: Appendix B: Shattering and Vapourisation Parameters For A-c(mentioning

confidence: 99%

A re-evaluation of dust processing in supernova shock waves

Bocchio

Jones

Slavin

2014

A&A

109

154

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“…Titanium and its alloys have been shown to undergo phase transformations during shock loading [53]. At high pressures, the HCP α-phase of titanium undergoes a martensitic phase transformation to a new HCP structure, known as the ω phase, with a c/a ratio of approximately 0.61 [68].…”

Section: (A) Shock Response Of Titaniummentioning

confidence: 99%

The shock and spall response of three industrially important hexagonal close-packed metals: magnesium, titanium and zirconium

Hazell

Appleby-Thomas

Wielewski

et al. 2014

Phil. Trans. R. Soc. A.

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Magnesium, titanium and zirconium and their alloys are extensively used in industrial and military applications where they would be subjected to extreme environments of high stress and strain-rate loading. Their hexagonal close-packed (HCP) crystal lattice structures present interesting challenges for optimizing their mechanical response under such loading conditions. In this paper, we review how these materials respond to shock loading via plate-impact experiments. We also discuss the relationship between a heterogeneous and anisotropic microstructure, typical of HCP materials, and the directional dependency of the elastic limit and, in some cases, the strength prior to failure.

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“…The value of the Grüneisen gamma is from MacDonald and MacDonald (1981). McQueen et al (1970), Marsh (1980), Mitchell and Nellis (1981), and Wang et al (2000). The original sources of the experimental data can be found in the above citations.…”

Section: The Burakovsky-preston-silbar (Bps) Melt Modelmentioning

confidence: 99%

Effect of strain rate on microstructure of polycrystalline oxygen-free high conductivity copper severely deformed at liquid nitrogen temperature

Zhang

Shim

2010

Acta Materialia

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Phenomenological plastic flow stress models are used extensively in the simulation of large deformations of metals at high strain-rates and high temperatures. Several such models exist and it is difficult to determine the applicability of any single model to the particular problem at hand. Ideally, the models are based on the underlying (subgrid) physics and therefore do not need to be recalibrated for every regime of application. In this work we compare the Johnson-Cook, Steinberg-Cochran-Guinan-Lund, Zerilli-Armstrong, Mechanical Threshold Stress, and Preston-Tonks-Wallace plasticity models. We use OFHC copper as the comparison material because it is well characterized. First, we determine parameters for the specific heat model, the equation of state, shear modulus models, and melt temperature models. These models are evaluated and their range of applicability is identified. We then compare the flow stresses predicted by the five flow stress models with experimental data for annealed OFHC copper and quantify modeling errors. Next, Taylor impact tests are simulated, comparison metrics are identified, and the flow stress models are evaluated on the basis of these metrics. The material point method is used for these computations. We observe that the all the models are quite accurate at low temperatures and any of these models could be used in simulations. However, at high temperatures and under high-strain-rate conditions, their accuracy can vary significantly.

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The Equation of State of Solids From Shock Wave Studies

Cited by 620 publications

References 26 publications

A re-evaluation of dust processing in supernova shock waves

A re-evaluation of dust processing in supernova shock waves

The shock and spall response of three industrially important hexagonal close-packed metals: magnesium, titanium and zirconium

Effect of strain rate on microstructure of polycrystalline oxygen-free high conductivity copper severely deformed at liquid nitrogen temperature

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