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Armature Shape Optimization of an Electromagnetic Launcher Including Contact Resistance
Date
2018-10-01
Author
Ceylan, Doga
Gudelek, Mehmet Ugur
Keysan, Ozan
Metadata
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Barrel and pulsed power supply modules are two crucial parts of an electromagnetic launcher (EML), in terms of overall efficiency. One of the most important features of the barrel side is the armature geometry. In this paper, the shape of the armature of an EML with 10-MJ current pulse generator, 1000-kA peak current, and 4.5-ms excitation time is optimized by using independent variables to define the exact geometry of the armature. The main goal is to maximize the muzzle kinetic energy of the projectile with 300-g mass including pressure and contact current constraints. Finite-element method (FEM) is used to calculate the muzzle kinetic energy of the EML for different armature geometries. Genetic algorithm is used as the optimization method. Since the contact resistance between the armature and the rail affects the distribution of contact current density, contact resistance is also modeled in FEM. It is observed that armature shape optimization study increases the muzzle kinetic energy to 596 kJ and the muzzle velocity to 1993 m/s.
Subject Keywords
Nuclear and High Energy Physics
,
Condensed Matter Physics
URI
https://hdl.handle.net/11511/40264
Journal
IEEE TRANSACTIONS ON PLASMA SCIENCE
DOI
https://doi.org/10.1109/tps.2018.2845948
Collections
Department of Electrical and Electronics Engineering, Article
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Barrel side and pulsed power supply module are two crucial parts of an electromagnetic launcher (EML), which affects the efficiency. One of the most important features in the barrel side is the shape of the armature. In this study, the shape of the armature is optimized by using independent variables to define the exact geometry of the armature. The main goal is to maximize the muzzle kinetic energy of the projectile. Armature geometry is divided into pieces which are used in the optimization algorithm as i...
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D. Ceylan, M. U. Gudelek, and O. Keysan, “Armature Shape Optimization of an Electromagnetic Launcher Including Contact Resistance,”
IEEE TRANSACTIONS ON PLASMA SCIENCE
, pp. 3619–3627, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40264.