Modal Analysis of Perforated Plates

A mode shape is a specific pattern of vibration executed by a mechanical system at a specific frequency. Different mode shapes will be associated with different frequencies. The experimental technique of modal analysis discovers these mode shapes and the frequencies. In this paper modal analysis has been carried out to determine the mode shapes and the respective frequencies of perforated plates with regard to change in the dimension of the perforations and the distance between the perforations (pitch).