Modeling and analysis of ball-screw inerters with consideration of physical mass

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (6) : 55-60.

HU Yinlong，WANG Kaiyi，CHENG Changjun，HUANG Chongqi，ZHU Zeqing，ZHENG Ruifei

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Abstract

In terms of the fact that the physical mass of inerters is often ignored in the existing research, a port-mass model for ball-screw inerters with physical mass consideration is proposed. Mathematical models and virtual simulation prototypes of a first-order system and a second-order system with a ball-screw inerter are established. By comparing the frequency responses of the mathematical model and simulation model, and through bench experiments, the accuracy of the proposed port-mass model is verified. Furthermore, based on a quarter-car vehicle model, the influence of the inerter physical mass on ride comfort is analyzed. The optimization simulation results show that there is an apparent difference in system performance between the cases with and without the physical mass consideration. Moreover, the optimization results indicate that comfort performance can be further improved based on the port-mass model. This demonstrates the necessity of considering the physical mass of inerters and the effectiveness of the proposed port-mass model.

Key words

inerter / port-mass model / performance analysis / vehicle suspension

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HU Yinlong，WANG Kaiyi，CHENG Changjun，HUANG Chongqi，ZHU Zeqing，ZHENG Ruifei. Modeling and analysis of ball-screw inerters with consideration of physical mass[J]. Journal of Vibration and Shock, 2023, 42(6): 55-60

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