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用解析方法研究杆的纵向冲击振动问题，对于具有一般边界条件的杆，得到了它在运动刚体纵向冲击下和在另一运动的杆的纵向冲击下的形变、速度和应力分布的解析表达式，并得到了冲击的持续时间
Analytical method is used to study the longitudinal shock and vibration of the rod. For the rod with the general boundary conditions, the analytical expression of its deformation, velocity and stress distribution under the longitudinal impact of the moving rigid body and the longitudinal impact of the other moving rod is obtained , And got the duration of the impact