库仑阻尼在不同刚度抗冲隔离器中的作用分析
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摘要
[目的]在被动式抗冲隔离器中,刚度与阻尼是降低瞬时冲击、减小振动传递的重要因素,因此选择合适的阻尼形式,考虑与之相适应的刚度成为关键。为此,[方法]基于所建立的库仑阻尼抗冲隔离系统模型,对库仑阻尼与线性弹簧、开关弹簧并联组合的隔离系统进行研究,利用具有指数规律特性的运动微分方程来表达系统模型,以探讨库仑阻尼在冲击隔离系统中的特性,并研究刚度形式及其大小对系统响应的作用规律。[结果]研究结果表明,库仑阻尼可以明显提高系统冲击隔离效率,降低相对位移幅值;在相同冲击环境下,库仑阻尼与开关弹簧组成的系统在抑制峰值、减小残余响应等方面均优于线性系统。[结论]所得结果对库仑阻尼在抗冲隔离的应用有一定的指导意义。
[Objectives]In the passive shock isolator,stiffness and damping are important factors to reduce the transient shock and reduce the vibration transmission. Therefore,it is the key to select the appropriate damping form and consider the appropriate stiffness.[Methods]In this paper,on the basis of established Coulomb damping shock isolation model, the isolation system of Coulomb damping combined with linear spring and switch spring is studied. The system model is expressed by the motion differential equation with the exponential law characteristics to explore the characteristics of Coulomb damping in the shock isolation system and study the stiffness and the law of function on the system response.[Results]The study results show that the Coulomb damping can significantly improve the shock isolation efficiency of the system and reduce the relative displacement amplitude. In the same shock environment,the system composed of Coulomb damping and the switch spring is superior to the linear system in suppressing the peak value and reducing the residual response.[Conclusions]The results of this paper have some guiding significance for the application of Coulomb damping in shock isolation.
[Objectives]In the passive shock isolator,stiffness and damping are important factors to reduce the transient shock and reduce the vibration transmission. Therefore,it is the key to select the appropriate damping form and consider the appropriate stiffness.[Methods]In this paper,on the basis of established Coulomb damping shock isolation model, the isolation system of Coulomb damping combined with linear spring and switch spring is studied. The system model is expressed by the motion differential equation with the exponential law characteristics to explore the characteristics of Coulomb damping in the shock isolation system and study the stiffness and the law of function on the system response.[Results]The study results show that the Coulomb damping can significantly improve the shock isolation efficiency of the system and reduce the relative displacement amplitude. In the same shock environment,the system composed of Coulomb damping and the switch spring is superior to the linear system in suppressing the peak value and reducing the residual response.[Conclusions]The results of this paper have some guiding significance for the application of Coulomb damping in shock isolation.
引文
[1]Scavuzzo R J,Pusey H C.Naval shock analysis and design[M].Washington DC:The Shock and Vibtation Information Analysis Center Booz Allen and Hamilton,Inc.,2000:434-451.
[2]姚熊亮,杨树涛,张阿漫.爆炸载荷作用下舰船板架的变形与断裂研究综述[J].中国舰船研究,2009,4(1):1-7,12.Yao X L,Yang S T,Zhang A M.Review for deformation and fracture behavior of ship stiffened plate subjected to blast loading[J].Chinese Journal of Ship Research,2009,4(1):1-7,12(in Chinese).
[3]Alabuzhev P M,Rivin E I.Vibration protecting and measuring systems with quasi-zero stiffness[M].New York:Hemisphere Publishing Corporation,1989.
[4]彭献,黎大志,陈树年.准零刚度隔振器及其弹性特性设计[J].振动、测试与诊断,1997,17(4):44-46.Peng X,Li D Z,Chen S N.Quasi-zero stiffness vibration isolator and design for their elastic characteristics[J].Journal of Vibration,Measurement&Diagnosis,1997,17(4):44-46(in Chinese).
[5]Ledezma-Ramirez D F,Ferguson N S,Brennan M J.An experimental switchable stiffness device for shock isolation[J].Journal of Sound and Vibration,2012,331(23):4987-5001.
[6]刘建湖,周心桃,潘建强,等.舰艇抗爆抗冲击技术现状和发展途径[J].中国舰船研究,2016,11(1):46-56,71.Liu J H,Zhou X T,Pan J Q,et al.The state analysis and technical development routes for the anti-explosion and shock technology of naval ships[J].Chinese Journal of Ship Research,2016,11(1):46-56,71(in Chinese).
[7]唐斯密,朱石坚,楼京俊.半主动干摩擦阻尼器在隔振系统中的抗冲击优化设计研究[J].振动与冲击,2012,31(1):11-15.Tang S M,Zhu S J,Lou J J.Optimal shock isolation design for a vibration isolation system with a semi-active control dry friction damper[J].Journal of Vibration and Shock,2012,31(1):11-15(in Chinese).
[8]Ismail M I.Shock isolation systems incorporating Coulomb friction[D].Southampton:University of Southampton,2012.
[9]张萌,张振山,张文群.库仑阻尼系统的冲击响应研究[J].振动与冲击,2010,29(11):87-90.Zhang M,Zhang Z S,Zhang W Q.Shock response of Coulomb damping system[J].Journal of Vibration and Shock,2010,29(11):87-90(in Chinese).
[10]Balandin D V,Bolotnik N N,Pilkey W D.Optimal protection from impact,shock and vibration[M].London:CRC Press,2001.3.
[11]中国舰船研究院.前联邦德国国防军舰艇建造规范:冲击安全性:BV043/85[S].北京:中国舰船研究院,1985.China Ship Research and Development Academy.The criteria for building the shipboards:shock security:BV043/85[S].Beijing:China Ship Research and Development Academy,1985(in Chinese).
[12]张春辉,汪玉,杜俭业,等.被动式恒力缓冲装置的设计与性能研究[J].振动与冲击,2015,34(13):176-181.Zhang C H,Wang Y,Du J Y,et al.Design of a passive constant force shock absorber and its characteristics[J].Journal of Vibration and Shock,2015,34(13):176-181(in Chinese).
[2]姚熊亮,杨树涛,张阿漫.爆炸载荷作用下舰船板架的变形与断裂研究综述[J].中国舰船研究,2009,4(1):1-7,12.Yao X L,Yang S T,Zhang A M.Review for deformation and fracture behavior of ship stiffened plate subjected to blast loading[J].Chinese Journal of Ship Research,2009,4(1):1-7,12(in Chinese).
[3]Alabuzhev P M,Rivin E I.Vibration protecting and measuring systems with quasi-zero stiffness[M].New York:Hemisphere Publishing Corporation,1989.
[4]彭献,黎大志,陈树年.准零刚度隔振器及其弹性特性设计[J].振动、测试与诊断,1997,17(4):44-46.Peng X,Li D Z,Chen S N.Quasi-zero stiffness vibration isolator and design for their elastic characteristics[J].Journal of Vibration,Measurement&Diagnosis,1997,17(4):44-46(in Chinese).
[5]Ledezma-Ramirez D F,Ferguson N S,Brennan M J.An experimental switchable stiffness device for shock isolation[J].Journal of Sound and Vibration,2012,331(23):4987-5001.
[6]刘建湖,周心桃,潘建强,等.舰艇抗爆抗冲击技术现状和发展途径[J].中国舰船研究,2016,11(1):46-56,71.Liu J H,Zhou X T,Pan J Q,et al.The state analysis and technical development routes for the anti-explosion and shock technology of naval ships[J].Chinese Journal of Ship Research,2016,11(1):46-56,71(in Chinese).
[7]唐斯密,朱石坚,楼京俊.半主动干摩擦阻尼器在隔振系统中的抗冲击优化设计研究[J].振动与冲击,2012,31(1):11-15.Tang S M,Zhu S J,Lou J J.Optimal shock isolation design for a vibration isolation system with a semi-active control dry friction damper[J].Journal of Vibration and Shock,2012,31(1):11-15(in Chinese).
[8]Ismail M I.Shock isolation systems incorporating Coulomb friction[D].Southampton:University of Southampton,2012.
[9]张萌,张振山,张文群.库仑阻尼系统的冲击响应研究[J].振动与冲击,2010,29(11):87-90.Zhang M,Zhang Z S,Zhang W Q.Shock response of Coulomb damping system[J].Journal of Vibration and Shock,2010,29(11):87-90(in Chinese).
[10]Balandin D V,Bolotnik N N,Pilkey W D.Optimal protection from impact,shock and vibration[M].London:CRC Press,2001.3.
[11]中国舰船研究院.前联邦德国国防军舰艇建造规范:冲击安全性:BV043/85[S].北京:中国舰船研究院,1985.China Ship Research and Development Academy.The criteria for building the shipboards:shock security:BV043/85[S].Beijing:China Ship Research and Development Academy,1985(in Chinese).
[12]张春辉,汪玉,杜俭业,等.被动式恒力缓冲装置的设计与性能研究[J].振动与冲击,2015,34(13):176-181.Zhang C H,Wang Y,Du J Y,et al.Design of a passive constant force shock absorber and its characteristics[J].Journal of Vibration and Shock,2015,34(13):176-181(in Chinese).