磁流变阻尼器的米氏模型及试验验证
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摘要
为研究磁流变阻尼器(MRD)非线性滞回性能的影响因素,建立精确的MRD力学模型,对MRD进行力学性能试验,并基于米氏方程提出一个综合考虑电流、位移和频率影响的力学模型——米氏模型。对所提模型和传统经典力学模型进行数值模拟,并与试验结果进行对比分析,结果表明:该模型可以模拟MRD的非线性滞回性能、体现位移和频率对阻尼力及非线性滞回性能的影响。
To find the effect factors of the nonlinear hysteresis capability of a magnetorheological damper(MRD) and establish a precise mathematical model,a Michaelis-Menten(MM) Model was presented based on the MM equation which considers the effects of current,amplitude and frequency.Numerical simulations of the MM Model and traditional classical mathematic model were carried out to compare with the test results.Comparison results indicate that the MM Model could simulate the hysteresis capability of MRD and reflect the effects of current,amplitude and frequency on damping force and nonlinear hysteresis capability.
To find the effect factors of the nonlinear hysteresis capability of a magnetorheological damper(MRD) and establish a precise mathematical model,a Michaelis-Menten(MM) Model was presented based on the MM equation which considers the effects of current,amplitude and frequency.Numerical simulations of the MM Model and traditional classical mathematic model were carried out to compare with the test results.Comparison results indicate that the MM Model could simulate the hysteresis capability of MRD and reflect the effects of current,amplitude and frequency on damping force and nonlinear hysteresis capability.
引文
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[6]Spencer B F,Dyke S J,Sain M K,Carlson J D.Phenomenological model of a magnetorheologicaldamper[J].Journal of Engineering Mechanics,1997,123(3):230―238.
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[9]王修勇,孙洪鑫,陈政清.旋转剪切式磁流变液阻尼器设计及力学模型[J].振动与冲击,2010,29(10):77―81.Wang Xiuyong,Sun Hongxin,Chen Zhengqing.Designand mechanical model of a rotary-mode shear MRdamper[J].Journal of Vibration and Shock,2010,29(10):77―81.(in Chinese)
[10]施亮,何琳.磁流变阻尼器参数辨识方法研究[J].振动与冲击,2009,28(1):131―133.Shi Liang,He Lin.Study on parameter identification formagnetorheological dampers[J].Journal of Vibration andShock,2009,28(1):131―133.(in Chinese)
[11]徐赵东,沈亚鹏.磁流变阻尼器的计算模型及仿真分析[J].建筑结构,2003,33(1):68―70.Xu Zhaodong,Shen Yapeng.Mathematical model andnumerical analysis of an MR damper[J].BuildingStructure,2003,33(1):68―70.(in Chinese)
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