Study on Effect of Rail Filet Radius in Electromagnetic Railgun

Autor:	S. R. Naga Praneeth, Bhim Singh, Jitendra P. Khatait
Rok vydání:	2021
Předmět:	Inductance Nuclear and High Energy Physics Railgun Cuboid Materials science Projectile Radius Mechanics Physics::Classical Physics Condensed Matter Physics Critical ionization velocity Current density Magnetic field
Zdroj:	IEEE Transactions on Plasma Science. 49:2997-3002
ISSN:	1939-9375 0093-3813
DOI:	10.1109/tps.2021.3102054
Popis:	Enhancing the inductance gradient of an electromagnetic railgun (EMRG) directly translates to an improvement in the force on the projectile. Fileting the rails on one side is one of the ways to improve the inductance gradient. This work focuses on the effects of filet arc radius on different parameters of inductance gradient, current density distribution, magnetic flux density, barrel efficiency, breech energy, and critical velocity. The performance of rails with filet arc radius of 2, 4, and 6 mm are compared with the conventional cuboid shape rail geometry. Dynamic field distributions are analyzed by simulating the designed systems in LS-DYNA. A magneto-static analysis is performed using Ansys-Maxwell to determine the magnetic flux density produced behind the armature. It is observed that there is an increase in the flux density and barrel efficiency when filet radius increases. An improvement of 3.81% is observed in the flux density and the barrel efficiency improved from 24% in conventional rails to 27% in rails with a filet radius of 6 mm.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5b5976d37896f91c6afbe878c843087a https://doi.org/10.1109/tps.2021.3102054 Zobrazit plný text záznamu