首页|Dynamic performance and parameter optimization of a half-vehicle system coupled with an inerter-based X-structure nonlinear energy sink

Dynamic performance and parameter optimization of a half-vehicle system coupled with an inerter-based X-structure nonlinear energy sink

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Inspired by the demand of improving the riding comfort and meeting the lightweight design of the vehicle,an inerter-based X-structure nonlinear energy sink(Ⅸ-NES)is proposed and applied in the half-vehicle system to enhance the dynamic perfor-mance.The X-structure is used as a mechanism to realize the nonlinear stiffness charac-teristic of the NES,which can realize the flexibility,adjustability,high efficiency,and easy operation of nonlinear stiffness,and is convenient to apply in the vehicle suspension,and the inerter is applied to replacing the mass of the NES based on the mass amplification characteristic.The dynamic model of the half-vehicle system coupled with the Ⅸ-NES is established with the Lagrange theory,and the harmonic balance method(HBM)and the pseudo-arc-length method(PALM)are used to obtain the dynamic response under road harmonic excitation.The corresponding dynamic performance under road harmonic and random excitation is evaluated by six performance indices,and compared with that of the original half-vehicle system to show the benefits of the Ⅸ-NES.Furthermore,the structural parameters of the Ⅸ-NES are optimized with the genetic algorithm.The re-sults show that for road harmonic and random excitation,using the Ⅸ-NES can greatly reduce the resonance peaks and root mean square(RMS)values of the front and rear sus-pension deflections and the front and rear dynamic tire loads,while the resonance peaks and RMS values of the vehicle body vertical and pitching accelerations are slightly larger.When the structural parameters of the Ⅸ-NES are optimized,the vehicle body vertical and pitching accelerations of the half-vehicle system could reduce by 2.41％and 1.16％,respectively,and the other dynamic performance indices are within the reasonable ranges.Thus,the Ⅸ-NES combines the advantages of the inerter,X-structure,and NES,which improves the dynamic performance of the half-vehicle system and provides an effective option for vibration attenuation in the vehicle engineering.

inerterX-structurenonlinear energy sink(NES)half-vehicle systemdynamic performance

Yong WANG、Peili WANG、Haodong MENG、Liqun CHEN

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Automotive Engineering Research Institute,Jiangsu University,Zhenjiang 212013,Jiangsu Province,China

Guangxi Key Laboratory of Automobile Components and Vehicle Technology,Guangxi University of Science and Technology,Liuzhou 545006,Guangxi Zhuang Autonomous Region,China

School of Automotive Engineering,Changzhou Institute of Technology,Changzhou 213032,Jiangsu Province,China

Shanghai Key Laboratory of Mechanics in Energy Engineering,Shanghai Frontier Science Center of Mechanoinformatics,Shanghai Institute of Applied Mathematics and Mechanics,School of Mechanics and Engineering Science,Shanghai University,Shanghai 200444,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaChina Postdoctoral Science FoundationMajor Project of Basic Science(Natural Science)of the Jiangsu Higher Education Institutions of China2022 Guangxi Key Laboratory of Automobile Components and Vehicle Technology Open Fund(Guangxi University of Science and TechYouth Talent Cultivation Program of Jiangsu University

12172153518052162023M73166822KJA4100012022GKLACVTKF09

2024

10.1007/s10483-024-3070-7

应用数学和力学(英文版)
上海大学

应用数学和力学(英文版)

影响因子：0.294
ISSN：0253-4827
年,卷(期)：2024.45(1)
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