Instability and breakup of stretching metallic jets

Yina Shi, Chengsen Qin

doi:10.6052/0459-1879-2009-3-2007-435

Volume 41 Issue 3

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Article Navigation > Chinese Journal of Theoretical and Applied Mechanics > 2009 > 41(3): 361-370

Yina Shi, Chengsen Qin. Instability and breakup of stretching metallic jets[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(3): 361-370. doi: 10.6052/0459-1879-2009-3-2007-435

Citation:

Yina Shi, Chengsen Qin. Instability and breakup of stretching metallic jets[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(3): 361-370. doi: 10.6052/0459-1879-2009-3-2007-435

Yina Shi, Chengsen Qin. Instability and breakup of stretching metallic jets[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(3): 361-370. doi: 10.6052/0459-1879-2009-3-2007-435

Citation:

Yina Shi, Chengsen Qin. Instability and breakup of stretching metallic jets[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(3): 361-370. doi: 10.6052/0459-1879-2009-3-2007-435

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Instability and breakup of stretching metallic jets

doi: 10.6052/0459-1879-2009-3-2007-435

Yina Shi, Chengsen Qin

Received Date: 2007-09-12
Publish Date: 2009-05-18

Abstract

Abstract

Based on the Hamilton principle, a coupled motion equationof stretching metallic shaped-charge jet is presented to study the effectsof yield strength, shear, strain rate, viscosity, surface tension force andvelocity gradient on the jet instability, and the results arequantitatively discussed. The value range ofnon-dimensional \lambda _m \dot {\varepsilon }_0 was obtained toillustrate the product of the wavelength in unstablest solution and initialstrain rate. Furthermore, the criterion and approximate theoretical formulaof jet breakup time are presented. The theoretical results were in fairlygood agreement with the jet experimental data and those from the methoddeveloped by Chou and Carleone.
- stretching metallic jet,
- motion equation,
- instability factor,
- critical wavelength,
- break-up time