Recent content by vamsi

Looks good to me. What do you think is doubtful? I had a doubt in the formula. But just checked today using a test setup and a force guage. I was able to calculate the μ_top with the same arrangement as the picture as 0,526. I have tried to slide the blue object on top of the yellow material...

Okay. Can you think of some simple test setup which can be used to measure the coefficient of friction between a non-rigid material (for eg. heap of sand/salt) and a rigid steel body? I would be most greatful for that!

I also do not think that the surface release at top and bottom side happen at the same time. I have thought of a simplification of the problem by spreading the material inside the container on a surface, and making the blue object slide on the material while measuring the peak force F. Do you...

Yes it is a rigid body made of steel. It does not change shape upon stress.

I cannot imagine how I could do that. By elevation do you mean if the force is applied at the top/centre/bottom of the side surface? Can you please elaborate.

I have plans to use a PTFE sheet as the base surface. I found out that the COF between steel and PTFE material is around 0.04

Unfortunately not. However, I have thought of adding more normal force by placing an object on top of the material in container. Something like this.

Consider a test setup as shown in Image below, where I have a blue object sandwiched between a material inside the container (for eg. sand) and a surface. The container is fixed and the material inside is assumed to not move. Using a force guage, I can measure the peak amount of force...