吸附垫仿生研究及其性能测试  

Biomimtic Research and Property Test of Adhesive Pads

作　　者：周群[1] 盛莉[1] 袁贵彬[1] 

机构地区：[1]上海理工大学理学院,上海200093

出　　处：《机械设计与研究》2011年第2期19-21,共3页Machine Design And Research

摘　　要：动物足掌的吸附系统可分为刚毛型和光滑表皮垫型。相对于刚毛型,对光滑型足垫的形态学以及与湿吸机制有关的功能的研究非常少。以螽斯为研究对象,螽斯足上拥有光滑的吸附垫,靠足垫和足末端的钩子螽斯可以在竖直壁面爬行。为揭开足垫的构造及其力学特性,用原子力显微镜观察其表面的微观形貌,并用纳米压痕仪测试足垫的弹性模量。结果表明螽斯足垫表面和树蛙一样拥有特殊设计的五边形和六边形花纹,花纹之间有相通的细沟槽,沟槽内的黏液腺产生分泌液,从而在接触表面产生湿吸力。足垫非常柔软有弹性,足垫表面的弹性模量大小分布比较均匀,平均有效弹性模量为87 KPa,类似于硅橡胶。足垫的这些特点对产生较大的摩擦力和吸附力是非常重要的。研究结果可为机器人仿生吸附垫的研制提供参考。Adhesion system on animal pads can be divided into setae pads and smooth pads.Relative to setae pads,there are less research on morphology of the smooth pads and its wet adhesion.Katydids were chosen here to be tested,there were smooth adhesive pads on katydid＇s feet.Depending on the pads and hooks on the pads＇terminal,katydids can climb on vertical walls.In order to uncover construction and mechanical properties of the pads,atomic force microscope was used to observe morphology of the pads,and Nano Indenter was also used to test modulus of elasticity.The results showed that there were specially designed hexagonal patterns,which were the same as tree frogs＇s pads.The pad is very soft and elastic,just likes silicon rubber.Characteristics of the pad is important for sufficient friction and adhesion.The results can provide information for biomimetic adhesive feet on robots.

关 键 词：吸附垫 超微结构 弹性 仿生 

分 类 号：G804.6[文化科学—运动人体科学]