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3 cards from this section. Quick, good the night before a test.
What are coupled vibrations?
Think about how two types of movement might influence one another.
Define eccentricity in relation to structural vibrations.
Consider how these centers interact in a structure.
What primarily causes coupled lateral-torsional vibrations?
Think about offset locations in a structure.
Torsional amplification increases demands on which structural elements?
Consider where stress might be concentrated in a structure.
A building designed with a center of mass significantly offset from its center of stiffness is hit by a lateral seismic force. Calculate the resultant torsional effect considering the displacement patterns.
Use calculations from torsional dynamics.
In a seismic analysis of a 10-story irregular building, each floor has an unequal mass distribution. Model the building in a dynamic response simulation and assess if it meets seismic codes.
Refer to simulation software for modeling structures under dynamic loads.
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