Page 61 - Dynamic Loading and Design of Structures
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Figure 2.11 Forced vibration with damping due to suddenly applied and maintained load.
Figure 2.12 Dynamic equilibrium of SDOF system with Coulomb friction.
amplitude of the dynamic displacements and in bringing about, after some time, quasi-static
conditions.
2.2.2.3 Coulomb damping
This type of damping is due to friction; as the SDOF oscillator moves on a rough surface, a
horizontal force develops, where is the dynamic friction coefficient and g is the
acceleration of gravity, and acts in direction opposite to the velocity as shown in Figure 2.12.
The resulting equation of motion for free vibrations is given below as
(2.40)
and the solution for an initial displacement is depicted in Figure 2.13.
