Axial vibration reduction of a shaft structure using a centrifugal pendulum absorber with inerters
QIN Meijuan1,JIN Xiaoling1,CHEN Michael Z.Q.2,HUANG Zhilong1
1.Department of Engineering Mechanics, School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China;
2. School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China
A shaft structure using a centrifugal pendulum absorber with inerters was studied.Based on the supposition of low-amplitude vibration, an axial dynamic equation of the shaft structure was established.Then the frequency response functions of the axial vibration of the shaft structure and the rotational vibration of the centrifugal pendulum were obtained.The influences of absorber parameters, such as the non-dimensional damping, mass ratio, and tuning function, on the axial vibration of the shaft structure were emphatically investigated.The optimization of absorber parameters for minimizing the resonant amplitude of axial vibration of the shaft structure was carried out.By using the fixed-point theory, the optimal non-dimensional damping was analytically expressed.The results indicate the tuning function has a significant effect on the axial vibration, and the maximum vibration reduction can also be achieved with a proper tuning function.Moreover, with the application of torsional inerters in the absorber, the tuning function can be easily adjusted.Finally, the axial vibration absorption effect of the centrifugal pendulum absorber with inerters was compared with that of a dynamic vibration absorber, and it is illustrated that the vibration reduction effect of the optimized centrifugal pendulum absorber with inerters is much better.
秦美娟1，金肖玲1，陈志强2，黄志龙1. 具惯容离心摆的轴系结构轴向振动减振分析[J]. 振动与冲击, 2018, 37(22): 36-42.
QIN Meijuan1,JIN Xiaoling1,CHEN Michael Z.Q.2,HUANG Zhilong1. Axial vibration reduction of a shaft structure using a centrifugal pendulum absorber with inerters. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(22): 36-42.
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