Coupled Oscillation of an Electric System for Electromagnetic Railgun
Publication: Journal of Aerospace Engineering
Volume 29, Issue 6
Abstract
The railgun system is an electromechanical coupled system. In this paper, electromechanical coupled dynamics equations of the electrical system in the railgun are proposed. The free oscillation of the electrical system in the railgun is investigated, changes in the natural frequency and the damping coefficients of the electrical system, along with the time and related parameters, are analyzed, the forced responses of the current to the voltage fluctuation are discussed, and the dynamic electromagnetic forces in the railgun are determined. The results show that a small voltage fluctuation of the electrical system in the railgun can cause a large dynamic magnetic force on the rails under some conditions.
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Acknowledgments
This project was supported by the Doctoral Research Program Foundation of the Education Ministry of China (Priority Development Areas, 20131333130002).
References
Christian, S., Liudas, T., and Rimantas, K. (2013). “Experimental and numerical investigations of vibrations at a railgun with discrete supports.” IEEE Trans. Plasma Sci., 41(5), 1508–1513.
Ferrero, R. (2013). “Measuring high impulse current distribution: Application to electromagnetic launchers.” IEEE Instrum. Meas. Mag., 16(5), 12–16.
Geng, Y. (2013). “Electromechanical coupled dynamics of rails for electromagnetic launcher.” Int. J. Appl. Electromag. Mech., 42(3), 369–389.
He, W., and Bai, X. (2013). “Dynamic responses of rails and panels of rectangular electromagnetic rail launcher.” J. Vibr. Shock, 32(15), 144–148 (in Chinese).
Johnson, A. J., and Moon, F. C. (2006). “Elastic waves and solid armature contact pressure in electromagnetic launchers.” IEEE Trans. Magn., 42(3), 422–429.
Johnson, A. J., and Moon, F. C. (2007). “Elastic waves in electromagnetic launchers.” IEEE Trans. Magn., 43(1), 141–144.
Liebfried, O., Schneider, M., Stankeviˇc, T., Baleviˇcius, S., and Žurauskien˙e, N. (2013). “Velocity-induced current profiles inside the rails of an electric launcher.” IEEE Trans. Plasma Sci., 41(5), 1520–1525.
Liu, W., Zhang, L. G., Bai, X. Z., and Zhang, Z. J. (2011). “Dynamic response of electromagnetic launcher’s rail subjected to harmonic magnetic pressure.” J. Harbin Inst. Technol., 18(6), 120–126.
Nechitailo, N. V., and Lewis, B. K. (2006). “Critical velocity for rails in hypervelocity launchers.” Int. J. Impact Eng., 33(1–12), 485–495.
Pang, Z., Wang, H., and Zhang, L. (2012). “Analysis of current and magnetic field distributions in rail launcher with Peaceman-Rachford finite-difference method.” IEEE Trans. Plasma Sci., 40(10), 2717–2722.
Sheshadri, K., Ramesh, N., Pranesachar, C. R., and Sharma, S. C. (2009). “Integral formulation of the problem of current distribution in compulsator wires of electromagnetic launchers and railguns.” IEEE Trans. Magn., 45(1), 550–554.
Tzeng, J. T. (2003). “Dynamic response of electromagnetic railgun due to projectile movement.” IEEE Trans Magn., 39(1), 472–475.
Tzeng, J. T., and Sun, W. (2007). “Dynamic response of cantilevered rail guns attributed to projectile/gun interaction—Theory.” IEEE Trans. Magn., 43(1), 207–213.
Xu, L., and Geng, Y. (2012a). “Dynamics of rails for electromagnetic railguns.” Int. J. Appl. Electromagn. Mech., 38(1), 47–64.
Xu, L., and Geng, Y. (2012b). “Forces of rails for electromagnetic railguns.” Appl. Math. Model., 36(4), 1465–1476.
Information & Authors
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Published In
Journal of Aerospace Engineering
Volume 29 • Issue 6 • November 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Mar 31, 2014
Accepted: Mar 16, 2016
Published online: Jun 8, 2016
Published in print: Nov 1, 2016
Discussion open until: Nov 8, 2016
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