TY - JOUR
T1 - Experimental Study of a Variable Stiffness Seat Suspension Installed With a Compact Rotary MR Damper
AU - Sun, Shuaishuai
AU - Yang, Jian
AU - Wang, Penghui
AU - Nakano, Masami
AU - Shen, Longjiang
AU - Zhang, Shiwu
AU - Li, Weihua
N1 - Funding Information:
This research is supported by ARC Linkage Project (Grand No. LP150100040), JSPS Grant-in-Aid for Research Activity Start-up (Grand No. 19K23476), for Young researcher B (Grand No. 20K14688) and for JSPS fellowship (Grand No. 19F19712), and the National Key R&D Program of China (Grant Nos. 2018YFB1201703).
Publisher Copyright:
© Copyright © 2021 Sun, Yang, Wang, Nakano, Shen, Zhang and Li.
PY - 2021/2/19
Y1 - 2021/2/19
N2 - Traditional MR seat suspension without stiffness control is not able to avoid the resonance between the excitation and the seat, though it can dampen the vibration energy. To solve this problem, this paper proposed a variable stiffness (VS) magnetorheological (MR) damper to implement an advanced seat suspension. Its natural frequency can be shifted away from the excitation frequency through the variations of stiffness, thereby realizing the non-resonance control. The new seat suspension is designed and prototyped first, and then its dynamic property under different energizing current, excitation amplitude, and excitation frequency was tested using an MTS machine. The testing results verified its stiffness controllability. The vibration attenuation performance of the seat suspension was also evaluated on a vibration shaking table. The vibration reduction performance of the seat suspension was evaluated under two kinds of excitations, i.e., harmonic excitation and random excitation; the experimental results indicate that the new seat suspension outperforms passive seat suspensions regarding their ride comfort.
AB - Traditional MR seat suspension without stiffness control is not able to avoid the resonance between the excitation and the seat, though it can dampen the vibration energy. To solve this problem, this paper proposed a variable stiffness (VS) magnetorheological (MR) damper to implement an advanced seat suspension. Its natural frequency can be shifted away from the excitation frequency through the variations of stiffness, thereby realizing the non-resonance control. The new seat suspension is designed and prototyped first, and then its dynamic property under different energizing current, excitation amplitude, and excitation frequency was tested using an MTS machine. The testing results verified its stiffness controllability. The vibration attenuation performance of the seat suspension was also evaluated on a vibration shaking table. The vibration reduction performance of the seat suspension was evaluated under two kinds of excitations, i.e., harmonic excitation and random excitation; the experimental results indicate that the new seat suspension outperforms passive seat suspensions regarding their ride comfort.
KW - compact rotary MR damper
KW - non-resonance
KW - seat suspension
KW - variable stiffness
KW - vibration control
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U2 - 10.3389/fmats.2021.594843
DO - 10.3389/fmats.2021.594843
M3 - Article
AN - SCOPUS:85102132961
VL - 8
JO - Frontiers in Materials
JF - Frontiers in Materials
SN - 2296-8016
M1 - 594843
ER -