Abstract
Based on the foot structure of the climbing biology and multivariate coupling bionic technology, the bionic flexible convex surface was designed and a 3D model was created using the digital modeling software. Finite Element Analysis software was used for contacting analysis to the bionic flexible convex foot structure in the state of dry friction and wet adhesion, and then studied frictional contact performance. The results of Finite Element Analysis shows that the contact stress of the convex is much larger than the stress of the area around it in the dry friction state and the deformation is mainly concentrated in the convex’s top. The friction between the hemispherical convex surface and the contact surface is the maximum and the cylindrical convex surface is the minimum. The friction between the bionic flexible convex structure and the solid contact surface in wet adhesion state is larger than dry state. Key words: Bionic, flexible, contact, finite element, wet adhesion.
Highlights
The biological non-smooth surface morphology is closely related to the tribological behavior
Finite Element Analysis software was used for contacting analysis to the bionic flexible convex foot structure in the state of dry friction and wet adhesion, and studied frictional contact performance
The friction between the bionic flexible convex structure and the solid contact surface in wet adhesion state is larger than dry state
Summary
The biological non-smooth surface morphology is closely related to the tribological behavior. Many animals have strong ability of adsorption and climbing (Zhou et al, 2007a) and their body surface morphology display increasing friction function, especially those to move on ground, wall and ceiling without hindrance. Their driver feet have a high level of evolution; some of them have the ability to secrete liquid. Contacting analysis to the bionic flexible convex foot structure, which in the dry friction and wet adhesion states were studied with Finite Element Analysis software for frictional contact performance
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