摘要
针对现有吸盘在粗糙表面以及小结构物体难附着、易脱落问题,仿生水蛭吸盘的凹坑结构,设计一种多褶皱且底部带有小孔阵列的新型吸盘RSS,通过建模和模拟仿真研究吸盘附着机理,实验探究了不同褶皱数量和阵列孔尺寸对吸盘在粗糙表面的垂直吸附性能以及水平抗剪切力性能的影响规律。结果表明:在-40 kPa真空度下,多褶皱结构可显著提升RSS吸盘的垂直吸附性能,最大提升约为87.9%,孔径大小对垂直吸附性能影响不大。在接触150目和800目砂纸时,孔径0.5 mm和1 mm对双褶皱和三褶皱吸盘水平抗剪切力影响较小,当孔径增加到1.5 mm时,水平抗剪切力值出现最大40.5%的增幅。当砂纸目数达到1600目时,水平抗剪切力值随着孔径的增大而增大。对于单褶皱吸盘,小孔孔径对水平抗剪切性能无明显影响。
Aims to address the challenge of poor adhesion and easy detachment of existing suction cups on rough surfaces and small structural objects.Inspired by the structure of leech suckers,we designed a novel type of sucker,RSS(rough-small-sucker),which has multiple folds and a bottom array of small pits.Modeling and simulation are employed to investigate the adhesion mechanism,while experiments explore the impact of fold quantity and pit size on vertical adhesion and horizontal shear resistance of the sucker on rough surfaces.We study the attachment mechanism of the sucker by modeling and simulation,and experimentally investigate the effects of different fold numbers and hole sizes on the vertical adhesion performance and horizontal shear resistance of the sucker on rough surfaces.Results show that the multifolded structure significantly improves RSS's vertical adhesion(up to 87.9% improvement under-40 kPa vacuum).Pit size has minimal effect on vertical adhesion.For various sandpaper grits,small pit sizes(0.5mm and 1 mm)have minimal impact on horizontal shear resistance of double-folded and triple-folded suckers.However,with a hole size of 1.5 mm,there is a 40.5% increase in horizontal shear resistance.The horizontal shear resistance increases with pit size for 1600-grit sandpaper.Pit size has no significant effect on horizontal shear resistance for single-folded suction cups.
作者
丁建宁
殷子健
胡宏伟
程广贵
张忠强
DING Jian-ning;YIN Zi-jian;HU Hong-wei;CHENG Guang-gui;ZHANG Zhong-qiang(Institute of Intelligent Flexible Mechatronics,Jiangsu University,Zhenjiang 212013,China;School of Mechanical Engineering,Yangzhou University,Yangzhou 225127,China)
出处
《吉林大学学报(工学版)》
2025年第11期3774-3782,共9页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金重大研究计划集成项目(92248301)
国家自然科学基金项目(52275191)
江苏省333工程项目(2021年).
关键词
仿生吸盘
多褶皱
小孔阵列
建模和模拟仿真
bionic sucker
multi-folded
array of small pit
modeling and simulation
