Vibrations of plates with initial geometrical periodical imperfections interacting with a periodic elastic foundation |
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Authors: | B. Michalak |
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Affiliation: | (1) Technical University of Łódź, Department of Structural Mechanics, Al. Politechniki 6, PL-93950 Łódź, Poland Fax: 42/313 564, PL |
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Abstract: | Summary The aim of this contribution is to formulate an engineering theory describing the effect of periodic structure of the elastic foundation on the dynamic behaviour of a plate with geometrical periodical imperfections, Fig. 1. It is shown that the obtained solutions depend on the structure length parameter l of the elastic foundation and the wave length of imperfections. The general results are illustrated by an example and compared with the known theories of orthotropic plates. Received 7 February 1999; accepted for publication 6 October 1999 |
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Keywords: | Plate periodic structure dynamics elastic foundation imperfection |
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