液压与气动2025，Vol.49Issue(9)：50-60,11.DOI:10.11832/j.issn.1000-4858.2025.09.006
剪切增稠流体在阻尼孔中的流动数值模拟
Numerical Simulation on Flow of Shear Thickening Fluid in Damping Orifice
摘要
Abstract
Shear thickening fluid is a kind of intelligent material,and when applying the shear thickening fluid to the damper,we obtain the shear thickening fluid damper.Based on the reason that shear thickening fluid damper will be subjected to huge resistance due to the existence of velocity gradient when the fluid flows through small pores or gaps,the shear thickening fluid damper plays a key role in energy absorption and shock absorption.Through the way of Fluent simulation,the shear thickening fluid which is made of 20％mass fraction of nano-silica-polyethylene glycol solution is used as the working medium of the shear thickening fluid damper,and the flow of the shear thickening fluid in the damping holes is used to simulate the working process of the damper,and then draw the force-displacement hysteresis curves at different frequencies.The energy produced by the resistance force during the working process of the shear thickening fluid damper is calculated according to the results of the hysteresis curve to analyze the energy absorption effect.From the results,it is known that under the condition of the low-frequency working environment(f≤2 Hz),the force-displacement curve shows a good characteristic of symmetry,and the energy consumed in the retraction process of the damper is almost equal to that in the process of extension.But with the increase of frequency(f＞2 Hz),the symmetric characteristic of the force-displacement curve becomes worse,and the energy consumed in the retraction process of the damper and the extension process are quite different.关键词
剪切增稠流体/力学特性/吸能/数值模拟Key words
shear thickening fluid/mechanical properties/energy absorption/numerical simulation分类
机械制造引用本文复制引用
赵航,赵雪峰,王税堉,张彬..剪切增稠流体在阻尼孔中的流动数值模拟[J].液压与气动,2025,49(9):50-60,11.基金项目
国家自然科学基金(52065012) （52065012）
