The friction force observed at macroscale is the result of interactions atvarious lower length scales that are difficult to model in a combined manner.For this reason, simplified approaches are required, depending on the specificaspect to be investigated. In particular, the dimensionality of the system isoften reduced, especially in models designed to provide a qualitativedescription of frictional properties of elastic materials, e.g. thespring-block model. In this paper, we implement for the first time a twodimensional extension of the spring-block model, applying it to structuredsurfaces and investigating by means of numerical simulations the frictionalbehaviour of a surface in the presence of features like cavities, pillars orcomplex anisotropic structures. We show how friction can be effectively tunedby appropriate design of such surface features.
展开▼
