Understanding Power Spectrum Density Transmissibility
Power spectrum density transmissibility (PSDT) is a type of complex frequency domain function proposed recently. It describes the relation between cross-spectra of system outputs. Since PSDTs with same local-reference degree of freedom (DOF) combination but with different transferring output DOFs cr...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2016/8479721 |
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| _version_ | 1832567301709234176 |
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| author | Yu Zhang Tong Zhu Jing Zhou |
| author_facet | Yu Zhang Tong Zhu Jing Zhou |
| author_sort | Yu Zhang |
| collection | DOAJ |
| description | Power spectrum density transmissibility (PSDT) is a type of complex frequency domain function proposed recently. It describes the relation between cross-spectra of system outputs. Since PSDTs with same local-reference degree of freedom (DOF) combination but with different transferring output DOFs cross each other at the system’s poles under certain load condition, the functions have been used as the primary data in operational modal analysis (OMA) to extract modal parameters, and such technique is named as PSDT-based OMA (PSDTOMA). Because PSDT is a concept that appears recently, researches on which, especially, in-depth discussions aim at the essence and properties of PSDT are very rare. For appropriate application of PSDTOMA, it is necessary to perform further study on such problem obviously. In this paper, two paths to get PSDT, which, respectively, are referred to as PSDT estimator and PSDT syntheticism, are given firstly; some properties about PSDT are explored based on the PSDT syntheticism, and the relation between PSDT and single reference transmissibility function (STF) is analyzed. Finally, the above conclusions are verified with numerical values and experimental data. |
| format | Article |
| id | doaj-art-3ee5757d5f6940a08c59049360dc65bd |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-3ee5757d5f6940a08c59049360dc65bd2025-02-03T01:01:46ZengWileyShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/84797218479721Understanding Power Spectrum Density TransmissibilityYu Zhang0Tong Zhu1Jing Zhou2State Key Lab of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, ChinaState Key Lab of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, ChinaState Key Lab of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, ChinaPower spectrum density transmissibility (PSDT) is a type of complex frequency domain function proposed recently. It describes the relation between cross-spectra of system outputs. Since PSDTs with same local-reference degree of freedom (DOF) combination but with different transferring output DOFs cross each other at the system’s poles under certain load condition, the functions have been used as the primary data in operational modal analysis (OMA) to extract modal parameters, and such technique is named as PSDT-based OMA (PSDTOMA). Because PSDT is a concept that appears recently, researches on which, especially, in-depth discussions aim at the essence and properties of PSDT are very rare. For appropriate application of PSDTOMA, it is necessary to perform further study on such problem obviously. In this paper, two paths to get PSDT, which, respectively, are referred to as PSDT estimator and PSDT syntheticism, are given firstly; some properties about PSDT are explored based on the PSDT syntheticism, and the relation between PSDT and single reference transmissibility function (STF) is analyzed. Finally, the above conclusions are verified with numerical values and experimental data.http://dx.doi.org/10.1155/2016/8479721 |
| spellingShingle | Yu Zhang Tong Zhu Jing Zhou Understanding Power Spectrum Density Transmissibility Shock and Vibration |
| title | Understanding Power Spectrum Density Transmissibility |
| title_full | Understanding Power Spectrum Density Transmissibility |
| title_fullStr | Understanding Power Spectrum Density Transmissibility |
| title_full_unstemmed | Understanding Power Spectrum Density Transmissibility |
| title_short | Understanding Power Spectrum Density Transmissibility |
| title_sort | understanding power spectrum density transmissibility |
| url | http://dx.doi.org/10.1155/2016/8479721 |
| work_keys_str_mv | AT yuzhang understandingpowerspectrumdensitytransmissibility AT tongzhu understandingpowerspectrumdensitytransmissibility AT jingzhou understandingpowerspectrumdensitytransmissibility |