Calculation of friction stresses between 2 materials

In summary, the person is conducting experiments to calculate the friction stresses on a 1 mm thick soda-lime silica glass slide. They are using a 1/4" ball bearing of various metals under a constant load of 2000g and testing the glass for breaking force. Another experiment involves evaluating the static coefficient of friction between the ball bearing and the glass. The person is interested in evaluating the friction stresses and their relation to damage on the glass surface. They are also suggested to consider the stresses caused by normal loading without friction, which is a simpler analysis problem.
  • #1
Peter de Haan
1
1
Dear All,
I am looking for a method to calculate the friction stresses created in 1 mm thick, fully supported, slide of soda-lime silica glass.

In this experiment a 1/4" ball bearing of various metals is being translated over the glass surface under a constant load of 2000g. The glass slide is then being tested to evaluate the breaking force in order to ascertain if the metal damaged the glass surface.

In a further experiment I have evaluated the static coefficient of friction between the 1/4" ball bearing and the glass.

What I am interested in is to evaluate the friction stresses as these are related to the creation of damage on the glass surface.
 
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  • #2
Have you considered just the stresses caused by normal loading of the bearing on the slide at 2000 gm without friction? It's a pretty complicated contact loading stress analysis problem to analyze, and that's much simpler than the case with friction included. Look up "spherical indenters" on Google.
 

FAQ: Calculation of friction stresses between 2 materials

1. What is friction?

Friction is the force that resists the relative motion or tendency of motion between two surfaces in contact with each other.

2. How is friction related to stress?

Friction stress is the force per unit area that is generated at the interface between two materials in contact due to the presence of friction.

3. What factors affect the calculation of friction stresses?

The calculation of friction stresses depends on the magnitude of the applied load, the nature of the materials in contact, and the roughness of the surfaces.

4. How can friction stresses be calculated?

Friction stresses can be calculated using mathematical formulas such as the Coulomb's law of friction or the Amontons' laws of friction.

5. What is the significance of calculating friction stresses?

Understanding and calculating friction stresses is important in engineering and design as it helps to determine the amount of force and stress that can be withstood by a material in contact with another, and can aid in the prevention of wear and damage to surfaces.

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