In this thesis we model the problem of vibration of a building due to earthquake with a system of second order differential equations. The variables of the system are a mass, stiffness and damping matrix. The earthquake is described with a function. Within solving the model, we introduce generalized eigenvalue problem (GEP) and Cholesky QR algorithm as a way to solve the latter. We also look into quadratic eigenvalue problem (QEP) and solving with linearization. We introduce the phenomenon of resonance and show an example of vibration of a building.
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