【摘 要】
：
Strong friction are always anticipated for interface of soft materials in wet conditions,such as tires in rainy day and surgical grasper.However,the wet fri
【机 构】
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SchoolofMechanicalEngineeringandAutomation,BeihangUniversity,No.37XueyuanRoad,HaidianDistrict,Beijin
【出 处】
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The 5th International Conference of Bionic Engineering 第五届国际
论文部分内容阅读
Strong friction are always anticipated for interface of soft materials in wet conditions,such as tires in rainy day and surgical grasper.However,the wet friction especially upon soft material has not been clearly studied yet since it was coupled with liquid and solid.As the typical biological prototype,the toe pad of tree frog,which can produce great friction under wet condition,was used to study the wet friction theory of soft materials.To apply its strong wet attachable ability on man-made structure,we further characterized the structure and friction of its toe pad,and discovered that it works in boundary friction status.The friction will be higher if the liquid film is thinner.Under the inspiration of its toe pads structure,a bio-inspired hexagon pillar surface was fabricated.Its boundary friction was about 40 times higher than its dry friction.The surface wettability has a strong impact on its boundary friction.It also demonstrated a steady and durable boundary friction compare to smooth surface.This study can help people further understand the wet friction mechanism of soft material.It will also be useful for the designing of stronger wet attachable surface.
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