determination of the fundamental frequency of perforated rectangular plates: concentrated negative mass approach for the perforation
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ID: 182054
2013
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Abstract
This paper is concerned with a vibration analysis of perforated rectangular plates with rectangular perforation pattern of circular holes. The study is particularly useful in the understanding of the vibration of sound absorbing screens, head plates, end covers, or supports for tube bundles typically including tube sheets and support plates used in the mechanical devices. An energy method is developed to obtain analytical frequencies of the perforated plates with clamped edge, support conditions. Perforated plate is considered as plate with uniformly distributed mass. Holes are considered as concentrated negative masses. The analytical procedure using the Galerkin method is adopted. The deflected surface of the plate is approximated by the cosine series which satisfies the boundary conditions. Finite element method (FEM) results have been used to illustrate the validity of the analytical model. The comparisons show that the analytical model predicts natural frequencies reasonably well for holes of small size.
| Reference Key |
mali2013advancesdetermination
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|---|---|
| Authors | ;Kiran D. Mali;Pravin M. Singru |
| Journal | malaria journal |
| Year | 2013 |
| DOI |
10.1155/2013/972409
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| URL | |
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