Principle and Validation of a Novel Variable Stiffness Dynamic Vibration Absorber by using Piezoelectric Stack
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摘要: 为了拓宽传统动力吸振器的的控制带宽,设计了一种采用压电堆元件的变刚度动力吸振器,利用欧拉梁弯曲刚度受其预应力影响的力学原理,采用调节控制电压改变压电堆元件的输出力,进而实时改变作为吸振器弹簧元件的欧拉梁弯曲刚度。介绍了动力吸振器的工作原理,给出了欧拉梁弯曲刚度的计算方法,设计并加工了一种压电型变刚度动力吸振器原理样件,并开展试验验证。动力学特性试验测试结果表明,驱动电压为0~120 V时,吸振器的移频范围为71.5 Hz~75 Hz。Abstract: In order to expand the effective frequency band of a conventional dynamic vibration absorber (DVA), a novel variable stiffness DVA with piezoelectric stack is designed. Using Euler beam theory, a piezoelectric stack element is applied to generate preload on the beam which acts as a spring element in the DVA to tune its bending stiffness. The principle of this novel DVA is presented and the equation of the bending stiffness for an Euler beam was deduced. A prototype of this variable stiffness DVA is fabricated. The dynamic behavior of the DVA under different driven voltages is validated experimentally. There results show that the natural frequency of the DVA can be shifted from 75 Hz to 71.5 Hz when the driven voltage was tuned from 0 V to 120 V.
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Key words:
- vibration absorber /
- piezoelectric stack /
- variable stiffness /
- Euler beam
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[1] 渠鸿飞,褚夫强,尹绪超,等.动力吸振器在电动机振动控制中的应用[J].噪声动与振动控制,2015,34(5):223-227 Qu H F, Chu F Q, Yin X C, et al. Application of dynamic tuned damper to vibration control of a motor[J]. Noise and Vibration Control, 2015,34(5):223-227(in Chinese) [2] 赵悦,肖新标,韩健,等.高速有砟轨道钢轨动力吸振器垂向吸振特性及其参数影响[J].机械工程学报,2013,49(16):17-25 Zhao Y, Xiao X B, Han J, et al. Vertical characteristic and its parameter effect of rail vibration absorber used in high-speed ballasted track[J]. Journal of Mechanical Engineering, 2013,49(16):17-25(in Chinese) [3] Shi C Z, Shaw S W, Parker R G. Vibration reduction in a tilting rotor using centrifugal pendulum vibration absorbers[J]. Journal of Sound and Vibration, 2016,385:55-68 [4] 背户一登.动力吸振器及其应用[M].任明章,译.北京:机械工业出版社,2013 Seto K. Dynamic vibration absorber and its application[M]. Ren M Z, trans. Beijing:Mechanical Industrial Press, 2013(in Chinese) [5] Walsh P L, Lamancusa J S. A variable stiffness vibration absorber for minimization of transient vibrations[J]. Journal of Sound and Vibration, 1992,158(2):195-211 [6] 徐振邦,龚兴龙,陈现敏.机械式频率可调动力吸振器及其减振特性[J].振动与冲击,2010,29(2):1-6 Xu Z B, Gong X L, Chen X M. Mechanical vibration absorber with tunable resonant frequency and its vibration attenuation characteristics[J]. Journal of Vibration and Shock, 2010,29(2):1-6(in Chinese) [7] Nagaya K, Kurusu A, Ikai S, et al. Vibration control of a structure by using a tunable absorber and an optimal vibration absorber under auto-tuning control[J]. Journal of Sound and Vibration, 1999,228(4):773-792 [8] Carneal J P, Charette F, Fuller C R. Minimization of sound radiation from Plates using adaptive tuned vibration absorbers[J]. Journal of Sound and Vibration, 2004,270(4-5):781-792 [9] Brennan M J, Dayou J. Global control of vibration using a tunable vibration neutralizer[J]. Journal of Sound and Vibration, 2000,232(3):585-600 [10] Liu J, Liu K F. A tunable electromagnetic vibration absorber:characterization and application[J]. Journal of Sound and Vibration, 2006,295(3-5):708-724 [11] Williams K, Chiu G, Bernhard R. Adaptive-passive absorbers using shape-memory alloys[J]. Journal of Sound and Vibration, 2002,249(5):835-848 [12] Brennan M J. Some recent developments in adaptive tuned vibration absorbers/neutralisers[J]. Shock and Vibration, 2006,13(4-5):531-543 [13] Chen Y, Zimcik D G, Wickramasinghe V K, et al. Development of the smart spring for active vibration control of helicopter blades[J]. Journal of Intelligent Material Systems and Structures, 2004,15(1):37-47 [14] Davis C L, Lesieutre G A, Dosch J J. Tunable electrically shunted piezoceramic vibration absorber[C]//Proceedings of SPIE 3045, Smart Structures and Materials 1997:Passive Damping and Isolation. San Diego, CA:SPIE, 1997:51 [15] 高强,房祥波,赵艳青,等.变质量动力吸振器及其减振性能[J].长安大学学报(自然科学版),2013,33(5):109-112 Gao Q, Fang X B, Zhao Y Q, et al. Variable mass dynamic vibration absorber and its performance of vibration reduction[J]. Journal of Chang'an University (Natural Science Edition), 2013,33(5):109-112(in Chinese) [16] 赵艳青,夏晶晶,高强,等.变质量颗粒阻尼吸振器及其宽频减振性能[J].中国机械工程,2015,26(19):2571-2574,2580 Zhao Y Q, Xia J J, Gao Q, et al. VMTPD and its performance of wideband vibration reduction[J]. China Mechanical Engineering, 2015,26(19):2571-2574,2580(in Chinese)
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