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3 cards from this section. Quick, good the night before a test.
What is ground acceleration and why is it important in structural analysis?
Think about what happens to buildings during earthquakes.
Define modal coordinates.
Consider how we break complex motions into simpler components.
What does ground acceleration measure?
Consider what happens to the ground during seismic events.
True or False: Modal coordinates allow us to analyze multiple vibration modes at once.
Think about how we break down complex systems.
Analyze a 5-story building under ground excitation with specific mass and stiffness values. Calculate its modal participation factor after applying transformations to modal coordinates.
Remember the steps of eigenvalue calculation and transformation.
Critically evaluate a design approach for a structure based on low modal participation factors from a seismic standpoint. What precautions should be taken?
Think about the implications of neglecting certain modes.
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