提出了新型弹簧式衰减器结构,以弹簧式衰减器为研究对象,针对无法定量分析衰减器衰减性能的问题,成功模拟了弹簧式衰减器中活塞的运动,克服了动网格计算中易出现的负体积问题。在不同的弹簧刚度与不同的频率条件下对弹簧式衰减器进行三维UDF数值计算,结果表明,当流体的脉动频率与衰减器的固有频率一致时,衰减效果最好,衰减率可达71%;弹簧刚度越低,衰减器的工作频带越宽。实验与仿真的结果相吻合,验证了衰减器模型的有效性和的可行性,为弹簧式衰减器衰减性能的定量分析提供了新方法和新思路。
Abstract
A new type of spring attenuator was proposed, and for the problem that the attenuation effect of attenuator can not be quantitatively analyzed, the spring attenuator was taken as the research object, and the movement of the piston in the spring attenuator was successfully simulated. Overcoming the problem of negative volume in the dynamic mesh calculation, the three-dimensional UDF numerical calculation was performed on the spring attenuator under different spring stiffness and different frequency conditions. The results showed that when the pulsation frequency of the fluid was consistent with the natural frequency of the attenuator, the attenuation effect was the best, and the attenuation rate could reach 71%. The lower the spring stiffness, the wider the attenuator's working band. The experiment was consistent with the simulation results, verified the validity and feasibility of the attenuator model, and provided a new method and new idea for quantitative analysis of the performance of the spring attenuator.
关键词
弹簧式衰减器 /
压力脉动 /
动网格技术
{{custom_keyword}} /
Key words
spring attenuator /
pressure pulsation /
dynamic mesh technology
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] Eiichi Kojima, Takayoshi Ichiyanagi. Research on Pulsation Attenuation Characteristics of Silencers in Practical Fluid Power Systems [J]. 2000, 1(2): 29-38.
[2] Lari Kela. Resonant frequency of an adjustable Helmholtz resonator in a hydraulic system [J]. 2009, 79(12): 1115-1125.
[3] Baldwin J S. Improvement in Accumulators for Liquids Under Pressure [P]. US121482, 1871-12-05.
[4] Stein J. Liquid Pulsation Dampening Device [P]. US4679597, 1987.
[5] G. W. Stewart. Acoustic Wave Filters [J]. Physics Review, 1922, 20: 528-551.
[6] G. W. Stewart. Acoustic wave filter; An extension of the theory [J]. Physics Review, 1924: 90-98.
[7] G. W. Stewart. ACOUSTIC WAVE FILTERS IN SERIES [J]. Journal of the Optical Society of America, 1924, 583.
[8] S. K. Tang. On Helmholtz resonators with tapered necks [J]. Journal of Sound and Vibration, 2003, 279(3): 1085-1096.
[9] Little E. Tuning of an electrorheological fluid-based intelligent Helmholtz resonator as applied to hydraulic engine mounts[C]//Proceedomg of ASME DSC Transportation Systems. 1994, 54: 43-61.
[10] Lamancusa J S. An actively tuned, passive muffler system for engine silencing[C]//Inter-noise & Noise-con Congress & Conference 87. 1987.
[11] 焦生杰,卡玛尔,等. H型液压滤波器的合理应用[J]. 长安大学学报(自然科学版),2010(4):97-101.
Jiao Shengjie, Kamal, et al. Reasonable application of H-type hydraulic filter [J]. Journal of Chang'an University (Natural Science Edition), 2010 (4): 97-101.
[12] 曾祥荣,张建成. 多孔同心式液压消声器的研究[J]. 机床与液压, 1990(3): 41-43.
Zeng Xiangrong, Zhang Jiancheng. Research on porous concentric hydraulic muffler [J]. Machine Tool and Hydraulics, 1990(3): 41-43.
[13] 章寅. 液压系统压力脉动衰减器特性研究[D].浙江大学, 2011.
Zhang Yin. Research on characteristics of pressure pulsation attenuator in hydraulic system [D]. Zhejiang University, 2011.
[14] Kojima E, Ichiyanagi T. Development research of new types of multiple volume resonators[C]//Bath Workshop on Power Transmission and Motion Control. University of Bath,UK,1998:193-206.
[15] A. Selameta and Z. L. Ji. Circular asymmetric Helmholtz resonators [J]. The Journal of the Acoustical Society of America,2000, 107(5): 2360-2369.
[16] N.S. Dickey, A. Selamet. HELMHOLTZ RESONATORS: ONE-DIMENSIONAL LIMIT FOR SMALL CAVITY LENGTH-TO-DIAMETER RATIOS [J]. Journal of Sound and Vibration, 1996, 195(3): 512-517.
[17] Selamet Ahmet, Lee Iljae. Helmholtz resonator with extended neck [J]. The Journal of the Acoustical Society of America,2003, 113(4 Pt 1): 1975-85.
[18] Mikota J, Reiter H. Development of a Compact and Tuneable Vibration Compensator for Hydraulic Systems [J]. International Journal of Fluid Power, 2003, 4(1): 17-31.
[19] 王福军. 计算流体动力学分析:CFD软件原理与应用[M]. 北京:清华大学出版社,2004.
Wang Fujun. Computational Fluid Dynamics Analysis: Principle and Application of CFD Software [M]. Beijing: Tsinghua University Press, 2004.
[20] 汪曾祥, 等. 弹簧设计手册[M]. 上海:上海科学技术文献出版社, 1986.
Wang Zengxiang, et al. Spring Design Manual [M]. Shanghai: Shanghai Science and Technology Literature Publishing House, 1986.
[21] 李新会,王德亮. 压力传感器参数标定及应用[J]. 中国水运(下半月),2010, 10(07): 94-95.
Li Xinhui, Wang Deliang. Calibration and Application of Pressure Sensor Parameters [J]. China Water Transport (the second half of the month), 2010,10(07):94-95.
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}