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Numerical modeling of melt-wave erosion in 2D block armatures

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3 Author(s)
Stefani, F. ; Inst. for Adv. Technol., Texas Univ., Austin, TX, USA ; Merrill, R. ; Watt, T.

The majority of published work on the transition to arcing contact in solid-armature railguns has focused on modeling the current melt wave, a localized front of molten material that erodes the perimeter of the armature. The most frequently cited models are based on two-dimensional (2D) analytical formulations in which the dominant source of current concentration is due to the velocity skin effect (VSE). This paper compares the predictions of three such models with a 2D numerical simulation that includes the effects of VSE, melting, and loss of molten material.

Published in:

Electromagnetic Launch Technology, 2004. 2004 12th Symposium on

Date of Conference:

25-28 May 2005