The problem which was discussed in this assignment is natural frequencies of rectifier board. Knowledge of those is crucial in cases where the board is exposed to an environment that operates and vibrates. Under such conditions a resonant response often occurs and the latter leads to large amplitudes of oscillation, vibration, noise and damage. In this assignment attention is firstly devoted to analytical discussions of discrete systems and then to the analysis of continuous systems: a simple steel beam and then a rectifier board.
The simple steel beam has been determined by its natural frequencies in three different ways: analytical, numerical and experimental, and then compared to each other. Later were determined natural frequencies of rectifier board in two different ways: by numerical and experimental analysis, and then graphically compared.
Due to the large difference between the given manufacturer's and the measured elastic module a more accurate elastic module was chosen so that the numerical analysis coincides well with the experimental analysis.