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3 cards from this section. Quick, good the night before a test.
What is the governing equation of motion for a damped SDOF system?
Think about the forces acting on the mass.
Define the damping ratio.
It’s a ratio that relates damping to mass and stiffness.
What type of damping occurs when ζ < 1?
Remember the range of the damping ratio.
True or False: A critically damped system oscillates.
Think about the speed of equilibrium.
Design a damped SDOF system for a building with a mass of 5000 kg, and a stiffness of 200000 N/m that experiences a damping ratio of 0.05. Calculate the necessary damping coefficient.
You have the required mass and stiffness values, ensure you correctly apply the formula.
Explain how the characteristics of the earthquake ground motion could influence the damping response of a structure.
Consider how different earthquakes have varying characteristics.
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