本文以一无限长弹性圆柱壳为研究对象,分析其自由振动特性及壳体中各内力传播的功率流,研究管壁接头对入射波的影响,从能量流的角度分析其振动控制效果. In this paper, an infinitely long elastic cylindrical shell is taken as the research object. The free vibration characteristics and the power flow propagating through the internal force in the shell are analyzed. The influence of the tube wall joint on the incident wave is studied. The vibration control effect is analyzed from the energy flow perspective.