Static friction is friction between two or more solid objects that are not moving relative to each other. For example, static friction can prevent an object from sliding down a sloped surface. The coefficient of static friction, typically denoted as μ s, is usually higher than the …

static friction coefficient becomes insensitive to the surface roughness. Buckley (1977) measured friction force between a gold surface in sliding contact with various metals in high...

The friction force required to shear interface bonds of contacting metallic rough surfaces is calculated, taking into account the prestress condition of contacting asperities. The surfaces are modeled by a collection of spherical asperities with Gaussian height distribution.

2018年10月25日 · This study formulates an iterative multi-scale friction model framework for modeling friction between rough surfaces, which uses the Fourier series-based representation of the rough surface. A comparison of the predicted static friction coefficient between the proposed model, statistical models and FEM results was made.

coefficient of static friction depends on many factors: the mechanical properties of material, the surface roughness, the mutual dissolution of materials, the contact time, the lubricant -film properties, the elasticity of tribosystem, etc.

Static friction creates a force between two surfaces which acts to impede motion. The magnitude of the friction force depends on the normal force and on the nature of the surfaces in contact. where N = normal force and μ = coefficient of static friction.

2010年6月4日 · A model for the contact area and static friction of nominally flat rough surfaces and rough spherical surfaces is presented.

1988年1月1日 · The friction force required to shear interface bonds of contacting metallic rough surfaces is calculated, taking into account the prestress condition of contacting asperities.

The coefficient of static friction depends on many factors: the mechanical properties of material, the surface roughness, the mutual dissolution of materials, the contact time, the lubricant -film properties, the elasticity of tribosystem, etc.

2004年6月1日 · Chang et al. [16] introduced a comprehensive model of the static friction coefficient for unlubricated metallic surfaces that incorporates both surface roughness and intermolecular adhesion forces. It is given by (7) μ= Q F = Q P−F s where the external applied force F is balanced by the interfacial contact P and adhesion F s forces that are ...