Simulation study on influence factor of electromagnetic deflection of projectile between polar plates

• Main Authors: CHEN Entao, LIU Jianhu, ZHANG Xianpi, ZHANG Lunping
• Format: Article
• Language: English
• Published: Editorial Office of Chinese Journal of Ship Research 2018-06-01
• Series: Zhongguo Jianchuan Yanjiu
• Subjects: passive electromagnetic armor; armor-piercing projectile; deflecting electromagnetic force; wire current theory; deflection effect
• Online Access: http://www.ship-research.com/EN/Y2018/V13/I3/53
• ISSN: 1673-3185; 1673-3185

<b>[Objectives]</b> Deflecting an incoming projectile using electromagnetic force on the projectile body between polar plates is a creative protection method for weapons and equipment. In order to study the adaptability of the wire current theory and the influence factor of the deflecting electromagnetic force, <b>[Methods]</b> the wire current theory of electromagnetic force is established and a simplified model and 3D model simulated on the basis of the finite element method. Using changing simulation parameters and a fitting method, the electromagnetic force variation is then studied under the influence of such factors as the geometric parameters of the plates, impact location and penetration angle of projectile. <b>[Results]</b> The obtained results are as follows:the deflecting electromagnetic force in the 3D simulation is only 1/7 that of the wire current model, so the wire current theory is not suitable for the 3D design of passive electromagnetic armor; the electromagnetic force decreases with the width of the plates in accordance with the power function law; the lateral deflecting electromagnetic force has a quadratic function with the impact location in the transverse and lateral directions; and the penetration angle has little impact on the lateral deflecting electromagnetic force. <b>[Conclusions]</b> The results of this paper can provide a foundation for the mechanism experiments, conceptual design and ship application of passive electromagnetic armor.