基于新型材料的吸振器设计及电流控制方法
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摘要
被动式吸振器(passive dynamic vibration absorber,简称PDVA)结构参数不可调,减振频带单一,不适用于宽频减振。为解决上述问题,首先,以磁流变弹性体(magnetorh-eological elastomer,简称MRE)为刚度元件,设计一种刚度可调的自适应吸振器(adaptive dynamic vibration absorber,简称ADVA);其次,对弹性体原料组成及磁流变效应进行介绍和分析;然后,对受控系统增加吸振器,引起系统新的共振问题提出了吸振器工作过程中的电流控制方法以消除新增的共振现象;最后,进行了仿真及实验研究。结果表明,本设计可将减振频带拓宽至11.37Hz,并且利用提出的电流控制方法可有效消除系统新增的共振峰。
Passive dynamic vibration absorber(PDVA),whose structural parameters can not be adjusted and vibration frequency band is single,is not suitable for broadband vibration.To solve the above problem,first,the magnetorheological elastomer(MRE)is used as the stiffness element to design an adaptive dynamic vibration absorber(ADVA).Second,the composition and MR effect of MRE are introduced and analyzed.Then,the current control method in the process of dynamic vibration absorber is proposed to eliminate the new resonance phenomenon which is caused by the addition of a vibration absorber to the controlled system.Finally,the simulation and experiment results show that the design can broaden the vibration frequency band to 11.37 Hz.At the same time,the new resonant peak of the controlled system is eliminated effectively by the proposed control method.
Passive dynamic vibration absorber(PDVA),whose structural parameters can not be adjusted and vibration frequency band is single,is not suitable for broadband vibration.To solve the above problem,first,the magnetorheological elastomer(MRE)is used as the stiffness element to design an adaptive dynamic vibration absorber(ADVA).Second,the composition and MR effect of MRE are introduced and analyzed.Then,the current control method in the process of dynamic vibration absorber is proposed to eliminate the new resonance phenomenon which is caused by the addition of a vibration absorber to the controlled system.Finally,the simulation and experiment results show that the design can broaden the vibration frequency band to 11.37 Hz.At the same time,the new resonant peak of the controlled system is eliminated effectively by the proposed control method.
引文
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[8]王鸿云,郑惠强,李泳鲜.磁流变液技术及应用研究[J].材料导报,2008,22(6):92-99.Wang Hongyun,Zheng Huiqiang,Li Yongxian.Research on magnetorheological fluid technology and its application[J].Materials Review,2008,22(6):92-99.(in Chinese)
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[12]仲维畅.磁偶极子与磁粉探伤[J].无损检测,1990,12(3):66-70.Zhong Weichang.Magnetic dipole and magnetic particle inspection in China[J].Nondestructive Testing,1990,12(3):66-70.(in Chinese)
[13]Jolly M R,Carlson J D,Mu1oz B C,et al.The magnetoviscoelastic response of elstomer composites consisting of ferrous particles embedded in polymer matrix[J].Journal of Intelligent Material Systems and Structures,1996,7(6):613-622.
[14]龚兴龙,邓华夏,李剑锋,等.磁流变弹性体及其半主动吸振技术[J].中国科学技术大学学报,2007,37(10):1192-1203.Gong Xinglong,Deng Huaxia,Li Jianfeng,et al.Magnetorheological elastomers and corresponding semi-active vibration absorption technology in China[J].Journal of University of Science and Technology of China,2007,37(10):1192-1203.(in Chinese)
[15]方生,龚兴龙,张先舟,等.磁流变弹性体力学性能的测试与分析[J].中国科学技术大学学报,2004,34(4):456-463.Fang Sheng,Gong Xinglong,Zhang Xianzhou,et al.Testing and analysis of mechanical properties of magnetorheological elastomers in China[J].Journal of University of Science and Technology of China,2004,34(4):456-463.(in Chinese)
[2]Williams K A,Chiu G T C,Bernhard R J.Passive-adaptive vibration absorbers using shape memory alloys[J].Smart Structures&Materials,1999,3668:630-641.
[3]Gao Qiang,Zhang Weifeng,Liu Benchao,et al.An adaptive tuned vibration absorber based on variable mass[J].Noise Control Engineering Journal,2011,59(5):491-496.
[4]Franchek M A,Ryan M W.Adaptive passive vibration control[J].Journal of Sound and Vibration,1995,189(5):565-585.
[5]Walsh P L,A variable stiffness vibration absorber for minimization of transient vibration[J].Journal of Sound and Vibration,1992,158(2):195-211.
[6]Deng Huaxia,Gong Xinglong,Wang Lianhua.Development of an Adaptive Tuned Vibration Absorber with Magnetorheological Elastomer[J].Smart Materials and Structures,2006,15(5):111-116.
[7]Williams K,Chiu G,Bernhard R,Adaptive-passive absorbers using shape-memory alloys[J].Journal of Sound and Vibration,2002,249(5):835-848.
[8]王鸿云,郑惠强,李泳鲜.磁流变液技术及应用研究[J].材料导报,2008,22(6):92-99.Wang Hongyun,Zheng Huiqiang,Li Yongxian.Research on magnetorheological fluid technology and its application[J].Materials Review,2008,22(6):92-99.(in Chinese)
[9]Gao Qiang,Duan Chendong,Fang Xiangbo,et al,Resonance reduction of primary system using variable mass tuned[J].Noise Control Engineering Journal,2014,62(3):138-144.
[10]Demchuk S A,Kuz′min V A.Viscoelastic properties of magnetorheological elastom-ers in the regime of dynamic deform-ation[J].Journal of Engineering Physics and Thermophysics,2002,75(2):396-400.
[11]宋伟志,周辉,赵艳青,等.基于磁流变弹性体变刚度动力吸振器的研究[J].舰船科学技术,2015,37(11):64-68.Song Weizhi,Zhou Hui,Zhao Yanqing,et al.Study of variable stiffness dynamic vibration absorber based on Magnetorheological elastomer in China[J].Ship Science and Technology,2015,37(11),64-68.(in Chinese)
[12]仲维畅.磁偶极子与磁粉探伤[J].无损检测,1990,12(3):66-70.Zhong Weichang.Magnetic dipole and magnetic particle inspection in China[J].Nondestructive Testing,1990,12(3):66-70.(in Chinese)
[13]Jolly M R,Carlson J D,Mu1oz B C,et al.The magnetoviscoelastic response of elstomer composites consisting of ferrous particles embedded in polymer matrix[J].Journal of Intelligent Material Systems and Structures,1996,7(6):613-622.
[14]龚兴龙,邓华夏,李剑锋,等.磁流变弹性体及其半主动吸振技术[J].中国科学技术大学学报,2007,37(10):1192-1203.Gong Xinglong,Deng Huaxia,Li Jianfeng,et al.Magnetorheological elastomers and corresponding semi-active vibration absorption technology in China[J].Journal of University of Science and Technology of China,2007,37(10):1192-1203.(in Chinese)
[15]方生,龚兴龙,张先舟,等.磁流变弹性体力学性能的测试与分析[J].中国科学技术大学学报,2004,34(4):456-463.Fang Sheng,Gong Xinglong,Zhang Xianzhou,et al.Testing and analysis of mechanical properties of magnetorheological elastomers in China[J].Journal of University of Science and Technology of China,2004,34(4):456-463.(in Chinese)
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