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KMID : 0371819980300050416
Nuclear Engineering and Technology
1998 Volume.30 No. 5 p.416 ~ p.423
Free Vibration Analysis of Perforated Plates Using Equivalent Elastic Properties
Choi, Suhn
Jeong, KyeongHoon/Kim, TaeWan/Kim, KangSoo/Park, KeunBae
Abstract
Many studies for the perforated plates have been done, especially on the subject of static behavior and stress distribution in the plate. Equivalent elastic properties are one of the successive concepts for this problem. However little effort was taken to get their dynamic characteristics.
In this paper finite element modal analysis was performed for the perforated plates having square and triangular hole- patterns. An attempt to use existing equivalent elastic properties into the modal analysis of the plate was carried out. To verify feasibility of the finite element models, modal test was also performed on one typical perforated plate. System parameters such as natural frequencies and mode shapes were extracted and compared with the analysis results.
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