摘要
以新概念的电磁轨道发射装置为研究对象,从建立其动力学模型入手,将电磁轨道装置简化为一固定在弹性支撑上的无限长Bernoulli-Euler梁,通过适当理论假设,提出其通用动力学方程,利用傅里叶变换求解动力学方程,得到了电磁轨道装置的临界速度和导轨的动力学特性理论公式,最后应用有限元分析软件仿真了电枢速度、轨道弹性模量、轨道密度、轨道截面转动惯量、支撑座弹性系数等参数对导轨动力学特性的影响。仿真结果显示,电枢临界速度时导轨变形最大。研究成果可为电磁轨道装置的结构设计和减振控制提供进一步的理论支撑。
Based on the new idea of electromagnetic rail launcher,the dynamic model of electromagnetic rail launcher was established.And the electromagnetic rail launcher was simplified as an infinity long Bernoulli-Euler beam which was fixed on a flexible support.The dynamic equation was given by some adequacy assumptions.Based on Fourier transform,the electromagnetic rail launcher critical speed and orbit dynamic characteristic were obtained.Finally,how the armature velocity,rail elastic modulus,rail density,rail section moment of inertia and other parameters affect the dynamic characteristic of electromagnetic rail launcher is investigated using finite element analysis software.The result showed that the rail deformation was the largest at the armature critical speed.The research work gives theoretic support to the structure design and vibration control of electromagnetic rail launcher.
出处
《船舶力学》
EI
北大核心
2010年第10期1158-1164,共7页
Journal of Ship Mechanics
关键词
电磁轨道装置
动力学特性
傅里叶变换
electromagnetic rail launcher
dynamic characteristic
Fourier transform
