摘要
为了提高电磁炮的发射精度和使用性能,研究了摩擦阻尼力对电磁轨道发射的影响因素,把电磁发射装置轨道看作是移动载荷作用下的弹性基础梁,利用拉普拉斯变换,傅里叶变换等方法推导出简谐压力作用下轨道的瞬态响应解析解,数值算例分析得到:梁的变形不同程度受到弹性系数、粘滞外阻尼系数和摩擦阻尼系数的影响;为求解更高阶偏微分方程的初值问题及其提高装置的性能提供了充足的依据。
In order to improve the accuracy performance of the electromagnetic guns, the paper study affecting factors of the electromagnetic rail launch under the friction damping force, it takes electromagnetic launcher rail as the elastic foundation beam under moving load, and derives the analytical solution of the transient response of the harmonic pressure track with Laplace transform, Fourier transform approach, numerical analysis show that. the elasticity coefficient, outside viscous damping and friction damping coef- ficient have a varying influences on deformation of the beam. So it provides a sufficient basis for solving the higher order partial differential equation initial value problems and improves the performance of the device.
出处
《火炮发射与控制学报》
北大核心
2013年第1期4-7,共4页
Journal of Gun Launch & Control
基金
国家自然科学基金(50875230)
关键词
电磁炮
留数定理
积分变换及其逆变换
变形分析
electromagnetic gun
residue theorem
integral transform and inverse transform
deformation analysis
