Discussion
Match the method with what it produces.
1. Eigenvalue analysis 2. Pushover analysis 3. Time-history analysis
P. A capacity curve Q. Periods and mode shapes R. Response at every instant
Answer: B
Correct answer: 1-Q, 2-P, 3-R
Each method answers a different question. Eigenvalue analysis solves \( (K-\omega^2M)\phi = 0 \) and yields periods and mode shapes - properties of the structure alone, with no loading involved.
Pushover analysis produces a capacity curve of base shear against roof displacement, showing strength and ductility. Time-history analysis integrates the equation of motion against a record and produces the response at every instant. Structure alone, capacity, and response to a particular event.
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