Comparative Numerical and Experimental Modal Analysis of Aluminum and Composite Plates
Apstrakt
The paper presents the comparative analysis of the dynamic behavior of two rectangular plates of different material, aluminum and composite. While their global geometric dimensions (length, width and thickness) are similar, their inner structures are quite different. Whereas aluminum plate can be considered isotropic, the composite plate is a unidirectional carbon-epoxy laminate. Modal characteristics of the two plates were determined both numerically and experimentally and a comparative analysis of the obtained results was performed. Responses of the plates were documented by an optical, contactless 3D digital image correlation (DIC) system that contains a set of high-speed cameras capable of recording the movement of the white-and-black stochastic pattern applied to the upper surfaces of the plates. Numerical simulations were performed by the finite element method (FEM) in the commercial software package ANSYS. The plates were excited by a modal hammer and allowed to freely oscillate.... In order to determine the natural frequencies of the plates the recorded time-domain responses were post-processed, i.e. converted to the frequency domain by fast Fourier transform (FFT). The first three natural modes were successfully experimentally established and compared to the corresponding numerical values. Since the differences between the two sets of results are less than 5%, the applied experimental technique can be considered valid and suitable for a wide range of engineering problems involving vibrations.
Ključne reči:
FFT / FEM / DIC / Composite plate / Aluminum plateIzvor:
Computational and Experimental Approaches in Materials Science and Engineering, Cnntech 2019, 2020, 90, 61-75Izdavač:
- Springer International Publishing Ag, Cham
Finansiranje / projekti:
- Istraživanje i razvoj savremenih pristupa projektovanja kompozitnih lopatica rotora visokih performansi (RS-MESTD-Technological Development (TD or TR)-35035)
DOI: 10.1007/978-3-030-30853-7_4
ISSN: 2367-3370
WoS: 000613139400004
Scopus: 2-s2.0-85073225126
Kolekcije
Institucija/grupa
Mašinski fakultetTY - CONF AU - Baltić, Marija AU - Svorcan, Jelena AU - Peković, Ognjen AU - Ivanov, Toni PY - 2020 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3270 AB - The paper presents the comparative analysis of the dynamic behavior of two rectangular plates of different material, aluminum and composite. While their global geometric dimensions (length, width and thickness) are similar, their inner structures are quite different. Whereas aluminum plate can be considered isotropic, the composite plate is a unidirectional carbon-epoxy laminate. Modal characteristics of the two plates were determined both numerically and experimentally and a comparative analysis of the obtained results was performed. Responses of the plates were documented by an optical, contactless 3D digital image correlation (DIC) system that contains a set of high-speed cameras capable of recording the movement of the white-and-black stochastic pattern applied to the upper surfaces of the plates. Numerical simulations were performed by the finite element method (FEM) in the commercial software package ANSYS. The plates were excited by a modal hammer and allowed to freely oscillate. In order to determine the natural frequencies of the plates the recorded time-domain responses were post-processed, i.e. converted to the frequency domain by fast Fourier transform (FFT). The first three natural modes were successfully experimentally established and compared to the corresponding numerical values. Since the differences between the two sets of results are less than 5%, the applied experimental technique can be considered valid and suitable for a wide range of engineering problems involving vibrations. PB - Springer International Publishing Ag, Cham C3 - Computational and Experimental Approaches in Materials Science and Engineering, Cnntech 2019 T1 - Comparative Numerical and Experimental Modal Analysis of Aluminum and Composite Plates EP - 75 SP - 61 VL - 90 DO - 10.1007/978-3-030-30853-7_4 ER -
@conference{ author = "Baltić, Marija and Svorcan, Jelena and Peković, Ognjen and Ivanov, Toni", year = "2020", abstract = "The paper presents the comparative analysis of the dynamic behavior of two rectangular plates of different material, aluminum and composite. While their global geometric dimensions (length, width and thickness) are similar, their inner structures are quite different. Whereas aluminum plate can be considered isotropic, the composite plate is a unidirectional carbon-epoxy laminate. Modal characteristics of the two plates were determined both numerically and experimentally and a comparative analysis of the obtained results was performed. Responses of the plates were documented by an optical, contactless 3D digital image correlation (DIC) system that contains a set of high-speed cameras capable of recording the movement of the white-and-black stochastic pattern applied to the upper surfaces of the plates. Numerical simulations were performed by the finite element method (FEM) in the commercial software package ANSYS. The plates were excited by a modal hammer and allowed to freely oscillate. In order to determine the natural frequencies of the plates the recorded time-domain responses were post-processed, i.e. converted to the frequency domain by fast Fourier transform (FFT). The first three natural modes were successfully experimentally established and compared to the corresponding numerical values. Since the differences between the two sets of results are less than 5%, the applied experimental technique can be considered valid and suitable for a wide range of engineering problems involving vibrations.", publisher = "Springer International Publishing Ag, Cham", journal = "Computational and Experimental Approaches in Materials Science and Engineering, Cnntech 2019", title = "Comparative Numerical and Experimental Modal Analysis of Aluminum and Composite Plates", pages = "75-61", volume = "90", doi = "10.1007/978-3-030-30853-7_4" }
Baltić, M., Svorcan, J., Peković, O.,& Ivanov, T.. (2020). Comparative Numerical and Experimental Modal Analysis of Aluminum and Composite Plates. in Computational and Experimental Approaches in Materials Science and Engineering, Cnntech 2019 Springer International Publishing Ag, Cham., 90, 61-75. https://doi.org/10.1007/978-3-030-30853-7_4
Baltić M, Svorcan J, Peković O, Ivanov T. Comparative Numerical and Experimental Modal Analysis of Aluminum and Composite Plates. in Computational and Experimental Approaches in Materials Science and Engineering, Cnntech 2019. 2020;90:61-75. doi:10.1007/978-3-030-30853-7_4 .
Baltić, Marija, Svorcan, Jelena, Peković, Ognjen, Ivanov, Toni, "Comparative Numerical and Experimental Modal Analysis of Aluminum and Composite Plates" in Computational and Experimental Approaches in Materials Science and Engineering, Cnntech 2019, 90 (2020):61-75, https://doi.org/10.1007/978-3-030-30853-7_4 . .