Title :
Armature contact load dynamics
Author :
Knoth, E.A. ; Bauer, D.P.
Author_Institution :
IAP Res. Inc., Dayton, OH, USA
Abstract :
Railgun armature contact forces are often treated as a "quasi-static" parameter. The magnetic loading of the armature is treated as time varying, but the structural response is treated statically. In this paper, the authors look at the dynamic response of trailing arm armatures to rail variations caused by surface imperfections and barrel straightness. They use a simple one degree of freedom model to show how armature stiffness affects contact loading.<>
Keywords :
Runge-Kutta methods; dynamic response; electrical contacts; load (electric); railguns; barrel straightness; contact forces; contact load dynamics; degree of freedom; dynamic response; quasi-static parameter; rail variations; railgun armature; stiffness; structural response; surface imperfections; time varying; trailing arm armatures; Armature; Damping; Equations; Magnetic forces; Magnetic separation; Rails; Response surface methodology; Springs; Stress; Surface treatment;
Journal_Title :
Magnetics, IEEE Transactions on
