爆炸与冲击2025，Vol.45Issue(1)：75-87,13.DOI:10.11883/bzycj-2024-0095
剪切增稠液填充蜂窝夹芯板的低速冲击响应
Low-velocity impact responses of shear-thickening fluid-filled honeycomb sandwich structures
摘要
Abstract
As an environmentally friendly energy-absorbing material,shear-thickening fluid(STF)can be applied to protective structures to improve impact resistance.STF was obtained by mixing fumed silica particles with polyethylene glycol solution.It was then filled into a honeycomb core layer to make STF-filled honeycomb sandwich panels.Finally,the effect of STF on the impact resistance of the structure was explored.The impact force-displacement curves were obtained by using the drop weight impact experiment,and the effects of impact velocity(1.0,1.5,2.0 m/s),honeycomb aperture diameter(2.0,2.5,3.0 mm),and wall thickness(0.04,0.06,0.08 mm)on the mechanical properties of the sandwich panel were studied.At the same time,digital image correlation technology was utilized,which is an optical method for measuring the deformation of the surface of an object.By comparing the pixel displacements in multiple images,the strain history and deflection field distribution of the back panel of the structure were obtained,and the low-velocity impact response process of the structure was discussed.The experimental results show that under low-velocity impact,there is bump deformation in the center area of the back panel of the STF-unfilled honeycomb sandwich panel,and there is obvious bulging deformation in the surrounding area.The central area of the back panel of the STF-filled honeycomb sandwich panels has a wider range of bump deformations and no bulging around it.The shear-thickening effect of STF can increase the honeycomb elements involved in energy absorption,expand the local deformation area of the structure,and reduce the deflection of the back panel of the structure.Increasing the impact velocity,increasing the honeycomb aperture diameter,or decreasing the wall thickness are all more conducive to the shear-thickening effect of STF.The results provide a reference for the application of STF in protective structures.关键词
剪切增稠液/蜂窝夹芯板/低速冲击/变形模式/数字图像相关技术Key words
shear-thickening fluid/honeycomb sandwich panel/low-velocity impact/morphing mode/digital image correlation technology分类
力学引用本文复制引用
李雨薇,易昶成,刘志芳,雷建银,李世强..剪切增稠液填充蜂窝夹芯板的低速冲击响应[J].爆炸与冲击,2025,45(1):75-87,13.基金项目
国家自然科学基金(12072219,12272254) （12072219,12272254）
山西省自然科学研究面上项目(202203021211170) （202203021211170）
海安太原理工大学先进制造与智能装备产业研究院开放研发项目(2023HA-TYUTKFYF016) （2023HA-TYUTKFYF016）
山西省科技创新人才团队(领军)专项资助(202204051002006) （领军）
