Mathematical modeling of rail gun

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Authors
Pratikakis, Nikolaos
Subjects
Advisors
Young, Kwon
Date of Issue
2006-09
Date
Publisher
Monterey California. Naval Postgraduate School
Language
Abstract
The exit velocity of the launch object along with the values of electric and thermal conductivity at the interfaces between the rails and the armature of a rail gun are critical issues. This thesis, using finite element method, estimates the former by solving the proper multiphysics governing equations, along with exploiting the contact theory between flat surfaces. A parametric analysis in the vicinity of the standard deviation of the normalized distance between the references planes of the rough surfaces was made for a variety of materials and textures at the interfaces. Furthermore, the amount of ohmic heat that is generated due to the application of the electric potential and the resistance of materials is estimated along with the average temperature at the interfaces. Finally, thermal stresses were also studied.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering and Astronautical Engineering
Organization
Naval Postgraduate School (U.S.).
Identifiers
NPS Report Number
Sponsors
Funder
Format
xviii, 79 p. ; col. ill. ;
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
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