energy dissipation rolling and considerations

[Ing Italy]

in the sheets I explain everything, I just want to point out that in the last case besides the work of the force of inertia there is also the work of the moment of inertia also positive.ringrazio all those who will answer the various questions and observations written in the sheets

 

[Er Presidente]

in the sheets I explain everything, I just want to point out that in the last case besides the work of the force of inertia there is also the work of the moment of inertia also positive.ringrazio all those who will answer the various questions and observations written in the sheets

Are we talking about an "ideal" wheel or a tyre?

 

[Ing Italy]

I would not say that it is ideal because as a schematic in the sheets the contact area is not a point but it has an area, that is, the contact wheel deforms elastically, moreover I assume phenomena of delayed elasticity (so not symmetry of the contact pressure)...so I would say that the behavior that I am analyzing is pseudoreal. .it's not really a pneumetic because I'm not interested in what is the real carcass of a tire with everything that involves

 

[Er Presidente]

I think the deformation needed to create the "flat" area is the most responsible for energy loss.
the problem would give it a size, very variable depending on the material.

 

[Ing Italy]

I think the deformation needed to create the "flat" area is the most responsible for energy loss.
the problem would give it a size, very variable depending on the material.

thank you er President for your answer.
therefore the energy disperses in:health, energy of elastic deformation....and ok until here I agree but because often it feels to say that the dissipation of energy in a pure rolling motion is due to the volvent friction, it is seen as it is true that the result of the binding actions is moved forward of the volventing friction parameter but as I have pure rolling the points of contact volvent and therefore the

 

[Ing Italy]

Moreover if the energy dissipated only through these two routes would not be too difficult to quantify the input of the deformation:it would be necessary to measure with thermocouples the different temperature of the wheel at the beginning and at the time of its stop, to make some calculation on the dispersion of the heat by conduction towards the inside of the wheel and towards the asphalt and the remaining part of energy would be that spent in the deformation

 

[Er Presidente]

thank you er President for your answer.
therefore the energy disperses in:health, energy of elastic deformation....and ok until here I agree but because often it feels to say that the dissipation of energy in a pure rolling motion is due to the volvent friction, it is seen as it is true that the result of the binding actions is moved forward of the volventing friction parameter but as I have pure rolling the points of contact volvent and therefore the

I think the most significant friction is the one on the tree (in an ideal wheel).

 

[Er Presidente]

Moreover if the energy dissipated only through these two routes would not be too difficult to quantify the input of the deformation:it would be necessary to measure with thermocouples the different temperature of the wheel at the beginning and at the time of its stop, to make some calculation on the dispersion of the heat by conduction towards the inside of the wheel and towards the asphalt and the remaining part of energy would be that spent in the deformation

at the end always in heat goes, excluding permanent deformations, typical example the wheel of the train on the track.