四极复合型轨道电磁发射器多物理场仿真

Multi Physical Field Simulation of Quadrupole Compound Rail Electromagnetic Launcher

四极复合型轨道电磁发射器在工作过程中,会产生结构变形、温度变化、电磁干扰等多种现象,同时涉及电磁场、温度场、结构场的多场效应,其作用机理相当复杂。本文利用有限元分析软件ANSYS,对四极复合型轨道电磁发射器进行电磁-结构、电磁-温度和电磁-温度-结构仿真,探究其在不同因素作用下的多物理场特性。仿真结果表明,该仿真模型能够反映出电磁发射过程中的实际现象,发射器各组件在发射结束时刻的温升不同,引起电枢和轨道不同程度的变形,因此设计装置结构和添加激励时,应充分考虑热应力的影响。

In the working process of quadrupole composite rail electromagnetic launcher,there will be many phenomena such as structural deformation,temperature change and electromagnetic interference.At the same time,it involves the multi field effects of electromagnetic field,temperature field and structural field,and its action mechanism is quite complex.In this paper,the finite element analysis software ANSYS is used to simulate the electromagnetic structure,electromagnetic temperature and electromagnetic temperature structure of the quadrupole composite rail electromagnetic launcher,and to explore its multi physical field characteristics under the action of different factors.The simulation results show that the simulation model can reflect the actual phenomena in the process of electromagnetic launch.The different temperature rise of each component of the launcher at the end of the launch will cause different degrees of deformation of the armature and rail.Therefore,the influence of thermal stress should be fully considered when design-ing the device structure and adding excitation.