基于局域共振声子带隙的扭转减振器设计方法  

Design method for torsional vibration dampers based on local resonance photonic crystals band-gap

作　　者：吴昱东[1] 李人宪[1] 丁渭平[1] 杨明亮[1] 马逸飞 WU Yudong;LI Renxian;DING Weiping;YANG Mingliang;MA Yifei(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学机械工程学院,成都610031

出　　处：《振动与冲击》2018年第9期180-184,共5页Journal of Vibration and Shock

基　　金：四川省教育厅重点项目-自然科学(16ZA0010);中央高校基本科研业务费理工科类创新项目(2682016CX032)

摘　　要：通过动态等效转动惯量分析,讨论了扭转减振器的减振频带特性与局域共振声子晶体带隙的相似性。基于局域共振声子晶体理论提出扭转减振器减振带隙的计算方法,并研究了扭转减振器几何设计参数及材料设计参数对减振带隙的影响规律。在此基础上,针对某国产MPV车型传动系扭转振动引致的车内轰鸣声问题,运用减振带隙计算方法设计扭转减振器,试制、安装样件并进行整车传动系扭振及车内噪声试验。结果表明,该扭转减振器可有效抑制传动系扭转振动,降低车内轰鸣声,提升整车声振舒适性。The similarity between vibration reduction frequency band features of torsional vibration dampers（ TVDs） and local resonance photonic crystals band gap ones was discussed with the dynamic equivalent moment of inertia analysis. A new method to calculate TVDs’ vibration reduction frequency band gap was proposed based on the theory of local resonance photonic crystals. The influences of TVDs’ geometric parameters and material ones on their vibration reduction band gaps were studied. Aiming at a certain multi-purpose vehicle（ MPV） ’s interior booming noise problem caused by its powertrain torsional vibration,this method for calculating vibration reduction frequency band gap was used to design a TVD. It was manufactured and installed in the MPV. The MPV’s powertrain torsional vibration tests and vehicle interior noise tests were conducted. The results showed that this TVD can effectively suppress the MPV’s powertrain torsional vibration,reduce its interior booming noise and improve the whole vehicle’s NVH performance.

关 键 词：局域共振 扭转减振器 声子晶体 带隙 等效转动惯量 

分 类 号：U463.213[机械工程—车辆工程]