Numerical study on groove formation of rails for various materials

  title={Numerical study on groove formation of rails for various materials},
  author={Kuo-Ta Hsieh},
  journal={2004 12th Symposium on Electromagnetic Launch Technology},
  • Kuo-Ta Hsieh
  • Published 2004 in IEEE Transactions on Magnetics
Recovered rails exhibit groove formation along the outer edge of the armature/rail contact surface in many experiments. Different causes are hypothesized, such as local melting resulting from the concentration of current density, material yielding due to high contact pressure, and material softening at elevated temperatures. Numerical simulations using the hybrid finite-element/boundary-element code EMAP3D were conducted to identify the cause of this damage. Various rail materials such as… CONTINUE READING
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