Velocity skin-effect transition conditions on metal-on-metal sliding contacts in muzzle-fed railguns

Author

Angeli, Marco ; Cardelli, Ermanno ; Azzerboni, Bruno

Author_Institution

Istituo di Energetica, Perugia Univ., Italy

Volume

33

Issue

1

fYear

1997

fDate

1/1/1997 12:00:00 AM

Firstpage

37

Lastpage

42

Abstract

This paper deals with a numerical modeling of the thermal transition of the sliding contacts of solid armatures to liquid and vapor state. The transient electromagnetic and thermal behavior of the rail-to-armature contact zone is analyzed by means of suitable equivalent networks. Either frictional and Ohmic heating or radiation and conduction heat exchange are taken into account. The numerical model presented is used to predict and to compare the transition velocities in traditional and muzzle-fed railguns

Keywords

equivalent circuits; heat radiation; railguns; skin effect; sliding friction; Ohmic heating; conduction heat exchange; electromagnetic behavior; equivalent networks; frictional heating; heat radiation; liquid state; metal-on-metal sliding contacts; muzzle-fed railguns; numerical modeling; rail-to-armature contact zone; solid armatures; thermal transition; vapor state; velocity skin-effect transition conditions; Acceleration; Armature; Electromagnetic analysis; Lorentz covariance; Numerical models; Railguns; Rails; Skin effect; Solids; Thermal resistance;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.559856

Filename

559856