本文求解出枪管在火药气体压力作用下的径向振动二阶偏微分方程,并求出枪管的x阶固有频率,从而求得枪管上任意点应力应变、速度和加速度径向瞬态响应.通过快速付立叶变换,得出幅频响应曲线.为枪管的动态研究和设计计算投供了理论依据. This paper solves the second-order partial differential equations of radial vibration of gun barrel under the pressure of gunpowder gas, and obtains the x-order natural frequency of the gun barrel to find the radial strain, velocity and acceleration transient at any point on the barrel Response The fast frequency response curve is obtained by fast Fourier transform, which provides a theoretical basis for the dynamic research and design calculation of the barrel.