Numerical and Experimental Approach for Identifying Elastic Parameters in Sandwich Plates
This article deals with the identification of elastic parameters (engineering constants) in sandwich honeycomb orthotropic rectangular plates. A non-destructive method is introduced to identify the elastic parameters through the experimental measurements of natural frequencies of a plate undergoing...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2002-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2002/617913 |
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| _version_ | 1841524398687780864 |
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| author | Sergio Ferreira Bastos Lavinia Borges Fernando A. Rochinha |
| author_facet | Sergio Ferreira Bastos Lavinia Borges Fernando A. Rochinha |
| author_sort | Sergio Ferreira Bastos |
| collection | DOAJ |
| description | This article deals with the identification of elastic parameters (engineering constants) in sandwich honeycomb orthotropic rectangular plates. A non-destructive method is introduced to identify the elastic parameters through the experimental measurements of natural frequencies of a plate undergoing free vibrations. Four elastic constant are identified. The estimation of the elastic parameter problem is solved by minimizing the differences between the measured and the calculated natural frequencies. The numerical method to calculate the natural frequencies involves the formulation of Rayleigh-Ritz using a series of characteristic orthogonal polynomials to properly model the free edge boundary conditions. The analysis of the results indicates the efficiency of the method. |
| format | Article |
| id | doaj-art-8ca9536fcb264027adb7ed74c09fed1e |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2002-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-8ca9536fcb264027adb7ed74c09fed1e2025-02-03T05:53:19ZengWileyShock and Vibration1070-96221875-92032002-01-0194-519320110.1155/2002/617913Numerical and Experimental Approach for Identifying Elastic Parameters in Sandwich PlatesSergio Ferreira Bastos0Lavinia Borges1Fernando A. Rochinha2SENAI – CETIQT, Rua Dr. Manoel Cotrim 195, Riachuelo, Rio de Janeiro, RJ, BrazilLMS – Solid Mechanics Laboratory, Mechanical Engineering Department, Federal University of Rio de Janeiro, C.P. 68503, Rio de Janeiro, RJ, BrazilLMS – Solid Mechanics Laboratory, Mechanical Engineering Department, Federal University of Rio de Janeiro, C.P. 68503, Rio de Janeiro, RJ, BrazilThis article deals with the identification of elastic parameters (engineering constants) in sandwich honeycomb orthotropic rectangular plates. A non-destructive method is introduced to identify the elastic parameters through the experimental measurements of natural frequencies of a plate undergoing free vibrations. Four elastic constant are identified. The estimation of the elastic parameter problem is solved by minimizing the differences between the measured and the calculated natural frequencies. The numerical method to calculate the natural frequencies involves the formulation of Rayleigh-Ritz using a series of characteristic orthogonal polynomials to properly model the free edge boundary conditions. The analysis of the results indicates the efficiency of the method.http://dx.doi.org/10.1155/2002/617913 |
| spellingShingle | Sergio Ferreira Bastos Lavinia Borges Fernando A. Rochinha Numerical and Experimental Approach for Identifying Elastic Parameters in Sandwich Plates Shock and Vibration |
| title | Numerical and Experimental Approach for Identifying Elastic Parameters in Sandwich Plates |
| title_full | Numerical and Experimental Approach for Identifying Elastic Parameters in Sandwich Plates |
| title_fullStr | Numerical and Experimental Approach for Identifying Elastic Parameters in Sandwich Plates |
| title_full_unstemmed | Numerical and Experimental Approach for Identifying Elastic Parameters in Sandwich Plates |
| title_short | Numerical and Experimental Approach for Identifying Elastic Parameters in Sandwich Plates |
| title_sort | numerical and experimental approach for identifying elastic parameters in sandwich plates |
| url | http://dx.doi.org/10.1155/2002/617913 |
| work_keys_str_mv | AT sergioferreirabastos numericalandexperimentalapproachforidentifyingelasticparametersinsandwichplates AT laviniaborges numericalandexperimentalapproachforidentifyingelasticparametersinsandwichplates AT fernandoarochinha numericalandexperimentalapproachforidentifyingelasticparametersinsandwichplates |