... and intermolecular interactions (for example Van der Waals forces)mark2142 said:Friction happens because of adhesion between high points of the pertubrances of the two surfaces
It will most likely depend on the material type and roughness (shape of the protuberances).mark2142 said:Is the deformation elastic or inelastic?
One can imagine that the hydraulic press cannot make a surface smoother than its own surface.mark2142 said:Will the surface of one body become smoother if pressed with hydraulic press?
Like rubber vs steel. I guess what you are saying is Steel pertubrances too get deformed elastically to a certain point but that would require large hydraulic force. Got it!jack action said:... and intermolecular interactions (for example Van der Waals forces)
It will most likely depend on the material type and roughness (shape of the pertubrances).
One can imagine that the hydraulic press cannot make a surface smoother than its own surface.
Even assuming a high smoothness of the press surface, it might break some peaks, but at a certain point, the deformation might be only elastic. If you add force to a point of plastic deformation, the whole part will probably break/deform as well.
How would they deform if there is no force acting on them?mark2142 said:Do pertubrances deform elastically while sitting on surfaces , without any force on them?
"pertubrances"? I think you meant "protuberances".mark2142 said:Friction happens because of adhesion between high points of the pertubrances of the two surfaces. The pertubrances deform.
I meant no force other than mg.jack action said:How would they deform if there is no force acting on them?
Where's the mystery here? Just look at macroscopic objects. If you stand on something it could deform temporarily and then return to its former shape (e.g. a door mat); or, it could remain deformed (e.g. a gravel path).mark2142 said:Do pertubrances deform elastically while sitting on surfaces , without any force on them?
Matter is anything that has mass and takes up space. It can exist in three states: solid, liquid, and gas. All objects, including living organisms, are made up of matter.
Friction is a force that resists the movement of two surfaces that are in contact with each other. It is caused by the microscopic irregularities on the surfaces that interact with each other, creating resistance and heat.
Adhesion is the attraction between two different substances. It occurs when the molecules of one substance are attracted to the molecules of another substance. This can cause the two substances to stick together, like water droplets on a glass surface.
Deformation is the change in shape or size of an object due to an applied force. This can happen when a force is applied to an object, causing it to stretch, compress, or bend. The amount of deformation depends on the strength and direction of the force applied.
A hydraulic press uses the principle of Pascal's law, which states that pressure applied to a fluid in a closed container will be transmitted equally to all parts of the container. In a hydraulic press, a small force is applied to a small area, which creates high pressure in a confined fluid. This pressure is then transmitted to a larger area, resulting in a larger force that can be used to compress or deform objects.