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Simulating a block sliding on plane with friction

User: "Ashmita Tiwari"
Altair Community Member
Updated by Ashmita Tiwari

I am trying to model a block sliding on a plane with friction contact. I would expect the friction force to be equal to Mu*m*g, but I am getting a very different answer. So not sure, what the issue might be with my model. I am attaching the model with this post.

image

For the above model,

Units: kg-mm-ms
Size of Block   = 10mmx10mmx10mm
Volume of Block = 1000mm^3
Density (steel) = 7.85e-6 kg/mm^3
Mass = Density*Volume = 7.85e-6*1000 = 7.85e-3 kg = 7.85 gm
Reaction Force = m*g = 7.85e-3 kg *9.81 m/s2 = 0.077N
Friction coefficient = 1.0
Friction Force = 1.0*0.077N = 0.077N

So, I would expect .077N = 7.7e-5 kN Reaction Force.

I have applied gravity load on the Blue block and imposed constant velocity on the green Press.

Ultimately, I wanted to increase the friction coefficient to cause the block to trip.

What is wrong with my model (attached with this post)?

Thank you.

Ashmita

 

 

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