粘滞流体阻尼器冲击缓冲特性研究

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (14) : 196-199.

论文

粘滞流体阻尼器冲击缓冲特性研究

孙靖雅焦素娟1 张磊2 华宏星1

作者信息 +

Investigation of the shock absorption characteristics of a viscous fluid damper

SUN Jingya1 JIAO Sujuan1 ZHANG Lei2 HUA Hongxing1

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文章历史 +

摘要

为获得粘滞流体阻尼器冲击缓冲特性，设计并制作一种非牛顿流体粘滞阻尼器样机，而后对其进行了不同高度下的冲击缓冲实验。为从流体力学角度分析阻尼力机理，建立改进幂律模型来描述硅油的粘度特性，并通过对实验数据的拟合获得其中待定参数。采用FLUENT软件并结合动网格技术，对阻尼器流场仿真后获得冲击载荷作用下阻尼力输出特性，将之与实验结果相对比，发现结果基本一致，可用于指导阻尼器初步设计。

Abstract

To obtain the shock absorption characteristics of the viscous fluid damper, a non-Newtonian fluid damper is designed and made, and then Shock tests are carried for it under various height conditions. For analysis of the damping mechanism from aspect of fluid dynamics, modified power law function is use to describe the viscosity of silicone oil, and parameters in the formula is determined by the measured viscosity values under various shear rates. CFD software FLUENT is adopted, while dynamic meshing technology is using, to obtain characteristics of the damping force under shock conditions. By comparing the results from experiments and simulations, it can be found that both results can approximately match each other and can be used to guide the damper design.

导出引用

孙靖雅焦素娟张磊华宏星. 粘滞流体阻尼器冲击缓冲特性研究[J]. 振动与冲击, 2013, 32(14): 196-199

SUN Jingya JIAO Sujuan ZHANG Lei HUA Hongxing. Investigation of the shock absorption characteristics of a viscous fluid damper[J]. Journal of Vibration and Shock, 2013, 32(14): 196-199