Stability of a viscoplastic ring

Serikov, S. V.

doi:10.1007/bf00916885

Cited by 5 publications

(1 citation statement)

References 9 publications

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“…Such perturbations were modeled with relative success by Serikov. 30 Ivanov et al 31 noted that the shear strength of the shell material has a substantial stabilizing effect on the development of the perturbations and that there is a minimum tube thickness d* ¼ s/r required for stable collapse, where s is the thickness of the tube and r is the outer radius of the tube. For steel, d* has to be larger than 10% for stable implosion.…”

Section: Failure To Pinchmentioning

confidence: 99%

Dynamics of explosively imploded pressurized tubes

Szirti

Loiseau

Higgins

et al. 2011

Journal of Applied Physics

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The detonation of an explosive layer surrounding a pressurized thin-walled tube causes the formation of a virtual piston that drives a precursor shock wave ahead of the detonation, generating very high temperatures and pressures in the gas contained within the tube. Such a device can be used as the driver for a high energy density shock tube or hypervelocity gas gun. The dynamics of the precursor shock wave were investigated for different tube sizes and initial fill pressures. Shock velocity and standoff distance were found to decrease with increasing fill pressure, mainly due to radial expansion of the tube. Adding a tamper can reduce this effect, but may increase jetting. A simple analytical model based on acoustic wave interactions was developed to calculate pump tube expansion and the resulting effect on the shock velocity and standoff distance. Results from this model agree quite well with experimental data. V

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Section: Failure To Pinchmentioning

confidence: 99%