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3 cards from this section. Quick, good the night before a test.
What is a damping ratio?
Think about how vibrations are reduced.
What damping ratio is typically most used in seismic design?
It's often remembered as a standard level.
What is the damping ratio denoted as?
It's a Greek letter.
True or False: Higher damping ratios lead to higher spectral ordinates.
Think about the relationship between damping and energy dissipation.
Given a structure designed with a 2% damping ratio, if engineering studies show increasing it to 5% can reduce expected earthquake response by 30%, calculate the new response spectrum values provided the initial peak was 2.0g.
Use the formula: new response = initial peak response - (initial peak response * reduction percentage).
How would you argue the benefits of using a higher damping ratio in the design of critical infrastructure like bridges versus standard buildings?
Think about the loads and the function of the structure.
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