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Eigenvalue Analysis of Stiffened Plates on Pasternak Foundations  

Lee, Byoung-Koo (원광대학교 토목환경도시공학부)
Kim, Il-Jung (전북과학대학 건축.토목계열)
Oh, Soog-Kyoung (원광대학교 건축학부)
Lee, Yong-Soo (원광대학교 건축학부)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.18, no.2, 2005 , pp. 151-158 More about this Journal
Abstract
This research analyzes eigenvalue analysis of stiffened plates on the Pasternak foundations using the finite clement method. For analyzing the stiffened plates, both the Mindlin plate theory and Timoshenko beam-column theory were applied. In application of the finite element method, 8-nodes serendipity clement system and 3-nodes finite element system were used for plate and beam elements, respectively. Elastic foundations were modeled as the Pasternak foundations in which the continuity effect of foundations is considered. In order to verify the theory of this study, solutions obtained by this analysis were compared with the classical solutions in reference, experimental solutions and solutions obtained by SAP 2000. The natural frequency of stiffened plates on Pasternak foundations were determined according to changes or foundation parameters and dimensions of stiffener.
Keywords
thick plate; stiffener; free vibration; elastic foundation; Pasternak foundation; natural frequency;
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