Features of using the main criterion of the FDD method in identifying the dynamic characteristics of structures
This publication continues the series of articles devoted to the Frequency Domain Decomposition (FDD) method that serves to identify the dynamic characteristics of structures (natural frequencies and forms of natural vibrations) from the vibration tests data without using vibroexcitation. The method...
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| Format: | Article |
| Language: | English |
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Peter the Great St.Petersburg Polytechnic University
2025-03-01
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| Series: | St. Petersburg Polytechnical University Journal: Physics and Mathematics |
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| Online Access: | https://physmath.spbstu.ru/article/2025.78.05/ |
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| author | Andrianova Elena Boldyrev Yury |
| author_facet | Andrianova Elena Boldyrev Yury |
| author_sort | Andrianova Elena |
| collection | DOAJ |
| description | This publication continues the series of articles devoted to the Frequency Domain Decomposition (FDD) method that serves to identify the dynamic characteristics of structures (natural frequencies and forms of natural vibrations) from the vibration tests data without using vibroexcitation. The method is based on the SV-decomposition of the cross-spectral density matrix (CSDM) of the measured signals. The proof of the possibility of using the FDD for an incomplete CSDM was given, such matrices being typical when working with large-sized structures. In this case, vibration tests include two types of measurements: continuous long-term ones taking at one or more selected reference points and consecutive short ones at other measuring points. The presented results may be useful in the operation of large concrete dams and other hydraulic structures to identify their dynamic characteristics. |
| format | Article |
| id | doaj-art-b07955715bac4d53bfda49b10bf3b806 |
| institution | Kabale University |
| issn | 2405-7223 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Peter the Great St.Petersburg Polytechnic University |
| record_format | Article |
| series | St. Petersburg Polytechnical University Journal: Physics and Mathematics |
| spelling | doaj-art-b07955715bac4d53bfda49b10bf3b8062025-08-20T03:44:35ZengPeter the Great St.Petersburg Polytechnic UniversitySt. Petersburg Polytechnical University Journal: Physics and Mathematics2405-72232025-03-0118110.18721/JPM.1810520714726Features of using the main criterion of the FDD method in identifying the dynamic characteristics of structuresAndrianova Elena0https://orcid.org/0000-0001-9199-6875Boldyrev Yury1https://orcid.org/0000-0002-9249-2158“B.E. Vedeneev VNIIG”, JSCPeter the Great St. Petersburg Polytechnic UniversityThis publication continues the series of articles devoted to the Frequency Domain Decomposition (FDD) method that serves to identify the dynamic characteristics of structures (natural frequencies and forms of natural vibrations) from the vibration tests data without using vibroexcitation. The method is based on the SV-decomposition of the cross-spectral density matrix (CSDM) of the measured signals. The proof of the possibility of using the FDD for an incomplete CSDM was given, such matrices being typical when working with large-sized structures. In this case, vibration tests include two types of measurements: continuous long-term ones taking at one or more selected reference points and consecutive short ones at other measuring points. The presented results may be useful in the operation of large concrete dams and other hydraulic structures to identify their dynamic characteristics.https://physmath.spbstu.ru/article/2025.78.05/decomposition in frequency domaindynamic characteristicsmatrix of mutual spectral densities |
| spellingShingle | Andrianova Elena Boldyrev Yury Features of using the main criterion of the FDD method in identifying the dynamic characteristics of structures St. Petersburg Polytechnical University Journal: Physics and Mathematics decomposition in frequency domain dynamic characteristics matrix of mutual spectral densities |
| title | Features of using the main criterion of the FDD method in identifying the dynamic characteristics of structures |
| title_full | Features of using the main criterion of the FDD method in identifying the dynamic characteristics of structures |
| title_fullStr | Features of using the main criterion of the FDD method in identifying the dynamic characteristics of structures |
| title_full_unstemmed | Features of using the main criterion of the FDD method in identifying the dynamic characteristics of structures |
| title_short | Features of using the main criterion of the FDD method in identifying the dynamic characteristics of structures |
| title_sort | features of using the main criterion of the fdd method in identifying the dynamic characteristics of structures |
| topic | decomposition in frequency domain dynamic characteristics matrix of mutual spectral densities |
| url | https://physmath.spbstu.ru/article/2025.78.05/ |
| work_keys_str_mv | AT andrianovaelena featuresofusingthemaincriterionofthefddmethodinidentifyingthedynamiccharacteristicsofstructures AT boldyrevyury featuresofusingthemaincriterionofthefddmethodinidentifyingthedynamiccharacteristicsofstructures |