The use of finite element analysis techniques for solving rail gun problems
Abstract
The use of commercial electromagnetic finiteelement programs for solving rail gun problems such as inductance calculations, force evaluations, and currentdensity distributions is described. The first code considered, PE2D, is a program for solving the electromagnetic and electrostatic problems described by the Laplace, Poisson, Helmholz or diffusion equations in two dimensions. PE2D is limited in that only 2D problems can be solved, and that current distributions through railarmature configurations are not readily calculable. Hence, a threedimensional code called MEGA is being developed. This program, which is still under development, has so far been used to calculate the 2D currentdensity distributions through rails and armatures; however, it is expected that it will be used to calculate full threedimensional problems.
 Publication:

IEEE Transactions on Magnetics
 Pub Date:
 January 1989
 DOI:
 10.1109/20.22503
 Bibcode:
 1989ITM....25...52A
 Keywords:

 Current Density;
 Finite Element Method;
 Flux Density;
 Inductance;
 Railgun Accelerators;
 Armatures;
 Computational Grids;
 Helmholtz Equations;
 Laplace Equation;
 Poisson Equation;
 Electronics and Electrical Engineering