Time and Frequency Domain Dynamic Analysis of Offshore Mooring
The numerical procedures for dynamic analysis of mooring lines in the time domain and frequency domain were developed in this work. The lumped mass method was used to model the mooring lines. In the time domain dynamic analysis, the modified Euler method was used to solve the motion equation of moor...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-07-01
|
| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/9/7/781 |
| _version_ | 1797526809402671104 |
|---|---|
| author | Shi He Aijun Wang |
| author_facet | Shi He Aijun Wang |
| author_sort | Shi He |
| collection | DOAJ |
| description | The numerical procedures for dynamic analysis of mooring lines in the time domain and frequency domain were developed in this work. The lumped mass method was used to model the mooring lines. In the time domain dynamic analysis, the modified Euler method was used to solve the motion equation of mooring lines. The dynamic analyses of mooring lines under horizontal, vertical, and combined harmonic excitations were carried out. The cases of single-component and multicomponent mooring lines under these excitations were studied, respectively. The case considering the seabed contact was also included. The program was validated by comparing with the results from commercial software, Orcaflex. For the frequency domain dynamic analysis, an improved frame invariant stochastic linearization method was applied to the nonlinear hydrodynamic drag term. The cases of single-component and multicomponent mooring lines were studied. The comparison of results shows that frequency domain results agree well with nonlinear time domain results. |
| first_indexed | 2024-03-10T09:35:35Z |
| format | Article |
| id | doaj.art-abc81bafe6734c2bbaeb0c9a9886947c |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T09:35:35Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-abc81bafe6734c2bbaeb0c9a9886947c2023-11-22T04:09:37ZengMDPI AGJournal of Marine Science and Engineering2077-13122021-07-019778110.3390/jmse9070781Time and Frequency Domain Dynamic Analysis of Offshore MooringShi He0Aijun Wang1Department of Naval Architecture & Ocean Engineering, School of Ocean Science & Engineering, Shanghai Maritime University, Shanghai 201306, ChinaLloyd’s Register, London EC3M 4BS, UKThe numerical procedures for dynamic analysis of mooring lines in the time domain and frequency domain were developed in this work. The lumped mass method was used to model the mooring lines. In the time domain dynamic analysis, the modified Euler method was used to solve the motion equation of mooring lines. The dynamic analyses of mooring lines under horizontal, vertical, and combined harmonic excitations were carried out. The cases of single-component and multicomponent mooring lines under these excitations were studied, respectively. The case considering the seabed contact was also included. The program was validated by comparing with the results from commercial software, Orcaflex. For the frequency domain dynamic analysis, an improved frame invariant stochastic linearization method was applied to the nonlinear hydrodynamic drag term. The cases of single-component and multicomponent mooring lines were studied. The comparison of results shows that frequency domain results agree well with nonlinear time domain results.https://www.mdpi.com/2077-1312/9/7/781offshore mooringdynamic analysistime domainfrequency domain |
| spellingShingle | Shi He Aijun Wang Time and Frequency Domain Dynamic Analysis of Offshore Mooring Journal of Marine Science and Engineering offshore mooring dynamic analysis time domain frequency domain |
| title | Time and Frequency Domain Dynamic Analysis of Offshore Mooring |
| title_full | Time and Frequency Domain Dynamic Analysis of Offshore Mooring |
| title_fullStr | Time and Frequency Domain Dynamic Analysis of Offshore Mooring |
| title_full_unstemmed | Time and Frequency Domain Dynamic Analysis of Offshore Mooring |
| title_short | Time and Frequency Domain Dynamic Analysis of Offshore Mooring |
| title_sort | time and frequency domain dynamic analysis of offshore mooring |
| topic | offshore mooring dynamic analysis time domain frequency domain |
| url | https://www.mdpi.com/2077-1312/9/7/781 |
| work_keys_str_mv | AT shihe timeandfrequencydomaindynamicanalysisofoffshoremooring AT aijunwang timeandfrequencydomaindynamicanalysisofoffshoremooring |