Two Dimensional Steady State Eddy Current Analysis of a Spinning Conducting Cylinder
Technical Report,01 Feb 2013,31 Aug 2014
ARDEC, METC, RDAR-MEA-A Picatinny Arsenal United States
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A spinning metal projectile flying through the magnetic field of earth may generate electromagnetic effects which can disrupt the electronic components contained inside the round. Finite element analyses were conducted to simulate the magnetic field inside a rotating solid conducting cylinder immersed in a uniform transverse magnetic field at steady-state. The factors which affect the magnetic field inside the cylinder were analyzed by varying the angular velocities and the electromagnetic properties permeability and conductivity of the cylinder. The response of the magnetic flux density at the center of the cylinders axis of rotation was also evaluated. The analysis results were compared to the resulting magnetic flux lines on the cylinder of the closed-form theoretical solutions and to the results obtained by the authors in a transient analysis, as presented in a previous paper. The analysis results indicated that the eddy current and skin effect on the magnetic field distribution inside the cylinder was affected by angular velocity and the electromagnetic properties of the cylinder.
- Electricity and Magnetism
- Ammunition and Explosives