2.2.3.2. Coulomb (Dry Friction) Damping

Try these first

1. 1.

   What is Coulomb damping?

   Hint

   Think of friction between two surfaces.

2. 2.

   State the formula for the damping force in Coulomb damping.

   Hint

   It's about the force due to friction.

3. 3.

   What type of damping does Coulomb damping refer to?

   • A) Viscous damping
   • B) Friction damping
   • C) Hysteretic damping

   Hint

   Focus on how energy is lost in each type.

4. 4.

   True or False: Coulomb damping leads to varying energy loss depending on the velocity of motion.

   • True
   • False

   Hint

   Consider the characteristics of different damping types.

5. 5.

   Determine the damping force experienced between two surfaces where the coefficient of friction is 0.3 and the normal force is 1000N.

   Hint

   Plug in the values into the equation provided.

6. 6.

   How would you model the interaction of multi-layered materials in a building and their respective Coulomb damping characteristics when subject to an earthquake?

   Hint

   Think about how these structures might shear and slide during shaking.