| 混有空气的孔隙式粘滞流体阻尼器模型及性能研究 |
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| 引用本文： | 何小伟,吴天行,王誉蓉,.混有空气的孔隙式粘滞流体阻尼器模型及性能研究[J].振动与冲击,2014,33(1):95-100. |
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| 作者姓名： | 何小伟 吴天行 王誉蓉 |
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| 作者单位： | 1.上海交通大学 机械系统与振动国家重点实验室，上海 200240；2.宁夏大学 机械工程学院，银川 750021 |
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| 摘 要： | 孔隙式粘滞流体阻尼器除了阻尼力外还有附加刚度特性。在混有空气的情况下,流体阻尼器效能会发生改变,对附加刚度有显著影响。为了研究并预测混有空气的流体阻尼器的动态特性,从混有空气的流体非线性阻尼力和非线性弹性力串联模型出发,通过分析计算非线性阻尼器的等效线性阻尼和弹性,建立了便于工程实际应用的流体阻尼器线性并联模型,分析了混有空气的流体阻尼器在不同频率和位移工况下效能和附加刚度的变化。通过对孔隙式粘滞流体阻尼器的动态特性试验,验证了分析方法和等效线性模型的正确性。
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| 关 键 词： | 粘滞流体阻尼器 阻尼系数 刚度 非线性 |
| 收稿时间： | 2012-11-14 |
| 修稿时间： | 2013-1-5 |
Study on modeling and characteristics of the viscous damper using the throttled fluid mixed with air |
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| HE Xiao-wei,WU Tian-xing,WANG Yu-rong.Study on modeling and characteristics of the viscous damper using the throttled fluid mixed with air[J].Journal of Vibration and Shock,2014,33(1):95-100. |
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| Authors: | HE Xiao-wei WU Tian-xing WANG Yu-rong |
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| Affiliation: | 1.State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240 China; 2. Department of Mechanical Engineering, Ning Xia University, Yinchuan 750021 China |
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| Abstract: | Orifice-type viscous dampers exhibit a hysteresis behavior which is explained by additional stiffness. When mixed with air, its efficiency and additional stiffness would change. To study the dynamic characteristics of the damper mixed with air, calculated the nonlinear damping force and stiffness in a series model. A linear model in parallel which was convenient in practical application was established based on equivalent damping and stiffness, then researched on the efficiency and additional stiffness of dampers mixed with air in different frequencies and amplitudes. Experimental results of viscous dampers imply this method and model is correct. |
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| Keywords: | viscous fluid damperdamping coefficientstiffnessnonlinear |
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