Can there exist friction without wear?

  • Thread starter Thread starter jon c
  • Start date Start date
  • Tags Tags
    Friction
AI Thread Summary
Friction without wear is a debated topic, primarily concerning mechanical heat generation without material degradation. The discussion highlights that while some technologies, like electric eddy brakes, minimize wear, they do not eliminate it entirely. Participants express skepticism about the existence of purely mechanical systems that achieve zero wear, emphasizing that wear is typically an inherent aspect of friction. The consensus leans towards the idea that some level of wear is unavoidable in mechanical systems. Overall, the concept of friction without wear remains largely theoretical and unproven in practical applications.
jon c
Messages
13
Reaction score
0
Friction without wear, does it exist? This would be mechanical heat generation without wear. If so what is the mechanism by which it works? Does anyone know of any new purely mechanical vehicle brake designs which claim zero wear for example. Nothing electrical please.
 
Physics news on Phys.org
jon c said:
Friction without wear, does it exist? This would be mechanical heat generation without wear. If so what is the mechanism by which it works? Does anyone know of any new purely mechanical vehicle brake designs which claim zero wear for example. Nothing electrical please.

I think you answered your own question there.

Electric 'eddy' brakes are really as close as you'll get. (Strictly speaking there's wear on the components themselves, but nothing in the way you're intending.)

http://en.wikipedia.org/wiki/Eddy_current_brake

Otherwise there's always wear.
 

Thread '1:1 versus 2:1 Mechanical Advantage debate'

The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...
View full post »

Thread 'Newton's first law?'

Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?
View full post »
Thread 'Beam on an inclined plane'

Thread 'Beam on an inclined plane'

Hello! I have a question regarding a beam on an inclined plane. I was considering a beam resting on two supports attached to an inclined plane. I was almost sure that the lower support must be more loaded. My imagination about this problem is shown in the picture below. Here is how I wrote the condition of equilibrium forces: $$ \begin{cases} F_{g\parallel}=F_{t1}+F_{t2}, \\ F_{g\perp}=F_{r1}+F_{r2} \end{cases}. $$ On the other hand...
View full post »

Similar threads

I Will This Friction Clamp Hold the Weight?
Replies
10
Views
2K
I Friction in rolling without slipping
Replies
7
Views
4K
B Friction on pure rolling non deforming sphere?
Replies
3
Views
2K
B Questions about momentum and force as well as normal force/friction
Replies
35
Views
3K
Modelling assumptions when friction is involved
3
Replies
112
Views
7K
I Solving Wheel Coming to a Stop: FBD, Friction & Hysteresis
Replies
22
Views
4K
Why must brake pads and rotors wear out?
Replies
9
Views
2K
Work done by friction by wheels
Replies
17
Views
6K
Question about car braking and tire friction
Replies
19
Views
2K
Engineering Moving Mechanical structures: stress, wear, temperature....
Replies
1
Views
1K

Hot Threads

Recent Insights

Back
Top