摘要
为深入了解轨道型电磁推进装置工作时由脉冲电流形成的冲击力的特点,以探索改善轨道支撑结构的有效方法,设计了一套冲击力试验系统,并运用数值模拟技术计算了相关试验情况。试验系统利用C型单体电枢作为冲击力源测试得到了不同脉冲电流作用下的冲击力波形,对两条波形曲线进行了比较分析;利用ANSYS/Multiphysics对处于电、磁、力耦合场环境中的电枢进行了数值计算,着重对电枢的耦合力场环境进行了模拟,计算出了电枢的电磁驱动力和电磁压紧力,分析了电枢在力场中的结构应力和形变。结果显示,数值计算方法和试验方法得到的电磁驱动力曲线和冲击力曲线前半部分的波形基本一致,而峰值点则随着脉冲电流的增加差值有所增大,但仍具有一定的跟随性,证明了试验方法对冲击力捕获具有一定的指导意义,也同时验证了计算方法的可行性和有效性。
To better understand the characteristics of the impulse force formed by pulse current of electromagnetic rail propulsion system, and to explore effective ways to improve the support structure of rails, a set of impulse force test system was designed, and the work-related test situation was numerically simulated. Several impulse force waveforms formed by different pulse current waveforms were achieved by using a C-shape monolithic armature as a source of impulse force in this test system, and two curves of waveform were comparatively analyzed. Numerical calculation of the armature existing in the environment of coupling fields including electric field and magnetic field and force field was carried out by ANSYS/Multiphysics, the coupling force field was emphatically analyzed to calculate the electromagnetic driving force and the electromagnetic clamping force acting on the armature, and the structure stress and deformation were also analyzed. The results show that the curves of electromagnetic driving force computed by numerical simulation and the curves of impulse force obtained by experiment are basically the same in the first half, and the value of peak points＇ error is increasing along with the increase of pulse current, but the curves still show some common characteristics. This verifies that the test method we used in this paper is proper to capture the impulse force, and the method of calculation is also feasible and effective.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2010年第3期659-663,共5页
High Power Laser and Particle Beams
关键词
电枢
轨道
脉冲
冲击力
电动力
armature
rail
impulse
impulse force
electrodynamie force
