电磁轨道发射状态下导轨的动态响应

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (2) : 10-14.

论文

电磁轨道发射状态下导轨的动态响应

田振国; 白象忠; 杨阳

作者信息 +

Dynamic response of rail during launch process of electromagnetic rail

TIAN Zhen-guo； BAI Xiang-zhong； YANG Yang

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文章历史 +

摘要

当导轨通入电流时，电枢受到推力作用沿轨道移动；同时，电枢经过的导轨受到安培力和电枢压力的作用。由于导轨外部的外包层将对导轨起到弹性支撑的作用，因此，可将导轨简化为弹性地基梁。应用二维Fourier积分变换，导出了导轨在移动荷载作用下动态挠度的一般解。根据电磁场理论、传热学，以及弹性力学的基本方程，可以得到电枢受到的推力、导轨相互作用的斥力和电枢作用在导轨上的压力的表达式，从而得到了电磁轨道发射状态下导轨挠度解的具体形式，并且分析了通入电流、导轨尺寸、外包层刚度等参量对导轨动态响应的影响

Abstract

The armature acted by trust will move along the rail when the current is switched on, as the same time, the Ampere force and press produced by armature are applied at the rail, and the containment external rail will play the role of elastic support, therefore, the rail can be simplified as elastic foundation beam. By means of twice Fourier transform, the general solution for dynamic deflection of the rail under moving load was derived. Based on electromagnetic theory, Heat transfer and Basic equations of elasticity, the expression of thrust subjected to armature, the repulsion interaction between rail and the press acted on rail by the armature can be obtained, on this basis, the Specific form solution of deflection of the rail when the electromagnetic rail is at a launching state was got. The influence to the dynamic response which is brought by the charging current, rail size and stiffness of rail is analyzed in this paper.

导出引用

田振国;白象忠;杨阳. 电磁轨道发射状态下导轨的动态响应[J]. 振动与冲击, 2012, 31(2): 10-14

TIAN Zhen-guo; BAI Xiang-zhong; YANG Yang . Dynamic response of rail during launch process of electromagnetic rail[J]. Journal of Vibration and Shock, 2012, 31(2): 10-14