噪声与振动控制2025，Vol.45Issue(2)：6-13,8.DOI:10.3969/j.issn.1006-1355.2025.02.002
多源激励下惯容复合型非线性隔振系统的隔振性能研究
Isolation Performance of a Composite Nonlinear Isolation System with Inerter under Multi-source Excitation
摘要
Abstract
Different vibration isolation units present the role of vibration damping and isolation through energy transfer or energy dissipation.In this paper,a composite nonlinear vibration isolation system containing inerter and negative stiffness spring was established.The approximate analytical solution of the system was solved by the first-order harmonic equilibrium method,and the correlation relationship between the system parameters and the vibration isolation performance of the sys-tem was revealed by the force transmission rate characteristics of the system.The vibration isolation performance of the con-ventional linear vibration isolation and the composite vibration isolation of a quarter of rail vehicles were compared and ana-lyzed.The study results show that the superposition of constant and harmonic component amplitudes is consistent with the synthesized amplitude-frequency amplitude,which verifies the accuracy of the analytical solution under multi-source excita-tion.In the main resonance region,the system has three sets of stable solutions and two sets of unstable solutions due to the saddle-node bifurcation.Larger inertia-mass ratio,damping ratio and smaller simple harmonic excitation amplitude can re-duce the peak value of the main resonance region and shift the main resonance region to the low-frequency region,while the constant excitation amplitude has little effect on the amplitude-frequency curve of the main resonance region.Reducing the inertia ratio and constant excitation amplitude and increasing the damping ratio can expand the vibration isolation range of the system in the low-frequency region.The composite vibration isolation can improve the vertical vibration isolation perfor-mance of the railway vehicles.关键词
振动与波/惯容器/复合式隔振/非线性动力学/多源激励/轨道车辆Key words
vibration and wave/inerter/composite vibration isolation/nonlinear dynamics/multi-source excitation/railway vehicle引用本文复制引用
吴少培,刘涛,柳康,李国芳,李得洋,丁旺才..多源激励下惯容复合型非线性隔振系统的隔振性能研究[J].噪声与振动控制,2025,45(2):6-13,8.基金项目
国家自然科学基金资助项目(12262017,12162020) （12262017,12162020）
甘肃省自然科学基金资助项目(21JR7RA328,23JRRA1697) （21JR7RA328,23JRRA1697）
甘肃省高校大学生就业创业能力提升工程资助项目(2021,2022) （2021,2022）
