Abstract:Horizontal rotary impact technology has greatly improved the drilling speed and efficiency of deep and high hardness formations. However, the trend of the impact of pendulum swirling on energy transmission is not clear, especially in the narrow tapered cross section cylinder, and the propagation and reflection characteristics of swirling stress waves have not been studied. Therefor, the characteristic relation of narrow cylinder and the jump condition on the shock wave front of swirling impact were established, and the propagation and reflection law of onedimensional stress wave in cylindrical cylinder with tapered crosssection were discussed, and the differential equation and analytic expression were determined. Then according to the influence of the geometric size and material properties of the component on the propagation characteristics of the longitudinal wave, the evolution law of the shock wave in the propagation process was determined. Then the stressstrainAttenuation Law of stress wave in the cross section was analyzed numerically. Finally, based on the existing theoretical study, experimental platform for wave impact force was built, and according to the measurement of varying parameters as stress and strain,the study results of propagation characteristics of stress wave on the tapered cylindrical rod are verified.