噪声与振动控制2025，Vol.45Issue(3)：42-48,7.DOI:10.3969/j.issn.1006-1355.2025.03.007
耗散超材料转子/密封系统失稳振动抑制
Instability Vibration Suppression of Dissipative Metamaterials Rotor/Seal Systems
摘要
Abstract
A method to suppress instability vibration in a rotor/seal system was proposed by using dissipative elastic metamaterials.The nonlinear model of the dissipative metamaterials rotor/seal system was established.Instability threshold speed was calculated by the eigenvalue theory and the differential equations were solved using the numerical integration method.The instability threshold and nonlinear dynamic behaviors of the dissipative metamaterials rotor/seal system were obtained.The results show that a local resonance bandgap is generated by the metamaterials in the rotor/seal system.In addi-tion,another forbidden band is generated,which can stop the propagation of the instability vibration within the bandgap.The instability threshold speed is raised.Compared with the elastic metamaterials,the ability to forbid the propagation of the vi-bration is reduced within the local resonance bandgap,while the instability vibration in the rotor/seal system is suppressed for the dissipative elastic metamaterials.关键词
振动与波/耗散弹性超材料/转子动力学/非线性密封力/稳定性/失稳阈值Key words
vibration and wave/dissipative elastic metamaterials/rotor dynamics/nonlinear seal force/stability/insta-bility threshold分类
机械工程引用本文复制引用
张恒,许琦,郭丽丽,姚红良,闻邦椿..耗散超材料转子/密封系统失稳振动抑制[J].噪声与振动控制,2025,45(3):42-48,7.基金项目
国家自然科学基金面上资助项目(52075084) （52075084）
