Single choice question:  7. About the vibration period of the structure, which of the following is the correct?  （A）The self-vibration period of the structure is inherent in the structure itself and is independent of  the seismic intensity. （B）The self-vibration period of the structure is related to the stiffness and mass of the structure  itself, regardless of the dam

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FEA for Dynamic Problems

Finite element analysis or FEA is a computational tool that evaluates the approximate solution for a particular engineering problem. The tools provided by FEA help to evaluate the solutions of partial differential equations (PDEs) computationally following a numerical approach. Solutions of the PDEs can also be performed by following traditional algebraic approaches, but when the problem gets towards the complex side, it becomes very tedious and almost impossible to arrive at the solutions. In such cases, the FEA fulfills the purpose by evaluating the equations following multiple time steps and iterations. The more the time steps and iterations, the more accurate the solution. The solution plotted by FEA analysis and mathematical approaches varies asymptotically.