Multiphysics modeling of a rail gun launcher
DOI:
https://doi.org/10.1260/1750-9548.2.4.421Abstract
A finite element based multiphysics modeling was conducted for a rail gun launcher to predict the exit velocity of the launch object, and temperature distribution. For this modeling, electromagnetic field analysis, heat transfer analysis, thermal stress analysis, and dynamic analysis were conducted for a system consisting of two parallel rails and a moving armature. In particular, an emphasis was given to model the contact interface between rails and the armature. A contact theory was used to estimate the electric as well as thermal conductivities at the interface. Using the developed model, a parametric study was conducted to understand effects of various parameters on the exit velocity as well as the temperature distribution in the rail gun launcher.
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