Excessive vibration of rotor-blade systems has been a main reason for the failure of rotating machinery. Therefore, methods capable of simultaneously suppressing vibrations rotor and blade are urgently needed. Considering this, a nonlinear energy sink (NES) with piecewise linear stiffness is used to satisfy the requirements. Firstly, the structure and working mechanism of the NES are introduced. And then, the dynamic model of rotor-blade-NES system is established by Lagrangian method The vibration suppression ability of the NES is studied under transient and steady state excitations. Dynamic behavior of the rotor-blade system with a NES is also investigated through global bifurcation analyses in this work. Finally, a simple test of NES’s vibration suppression ability on rotor-blade system is completed. The results show that, under given parameters, the vibration suppression performances of the NES on both rotor and blade are superior both in steady state and transient state. In numerical simulation, a vibration suppression rate of 93% on the rotor is achieved and in test a rate of 88% is achieved.

转子叶片系统的过度振动一直是导致旋转机械故障的主要原因。因此，迫切需要能够同时抑制转子和叶片的振动的方法。考虑到这一点，使用具有分段线性刚度的非线性能量吸收器（NES）来满足要求。首先介绍了NES的结构和工作机制。然后，通过拉格朗日法建立了动叶片-NES系统的动力学模型。研究了NES在瞬态和稳态激励下的振动抑制能力。在这项工作中，还通过全局分叉分析研究了带有NES的转子叶片系统的动态行为。最后，完成了对NES在转子叶片系统上的减振能力的简单测试。结果表明，在给定的参数下，NES在转子和叶片上的抑振性能在稳态和瞬态下均优异。在数值模拟中，转子的振动抑制率达到93％，而在测试中，振动抑制率达到88％。