Theoretical and experimental analysis of tethered buoy instability in gravity waves
The motion of a tethered spherical buoy subjected to incident regular waves was measured in a wave tank. Transverse instability was observed when the period of the wave generated was close to one-half of the natural period of the buoy. The transverse instability confirmed as Mathieu type was predomi...
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| Veröffentlicht in: | Ocean engineering 2007-02, Vol.34 (2), p.261-274 |
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| container_title | Ocean engineering |
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| creator | Radhakrishnan, Sreeram Datla, Raju Hires, Richard I. |
| description | The motion of a tethered spherical buoy subjected to incident regular waves was measured in a wave tank. Transverse instability was observed when the period of the wave generated was close to one-half of the natural period of the buoy. The transverse instability confirmed as Mathieu type was predominant at the surface but diminished with increase in the depth of submergence. The stable and unstable zones were determined on the Mathieu's instability diagram. Experimental results were in agreement with the predicted zone of instability for a two degree of freedom oscillation problem of Mathieu type which has a periodically varying spring constant. |
| doi_str_mv | 10.1016/j.oceaneng.2006.01.010 |
| format | Article |
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Transverse instability was observed when the period of the wave generated was close to one-half of the natural period of the buoy. The transverse instability confirmed as Mathieu type was predominant at the surface but diminished with increase in the depth of submergence. The stable and unstable zones were determined on the Mathieu's instability diagram. Experimental results were in agreement with the predicted zone of instability for a two degree of freedom oscillation problem of Mathieu type which has a periodically varying spring constant.</description><identifier>ISSN: 0029-8018</identifier><identifier>EISSN: 1873-5258</identifier><identifier>DOI: 10.1016/j.oceaneng.2006.01.010</identifier><identifier>CODEN: OCENBQ</identifier><language>eng</language><publisher>Amsterdam: Elsevier Ltd</publisher><subject>Applied sciences ; Buildings. 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Public works</subject><subject>Exact sciences and technology</subject><subject>Ground, air and sea transportation, marine construction</subject><subject>Hydraulic constructions</subject><subject>Marine</subject><subject>Marine and water way transportation and traffic</subject><subject>Mathieu instability</subject><subject>Parametric excitation</subject><subject>Tethered spherical buoy</subject><issn>0029-8018</issn><issn>1873-5258</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFkE1PwzAMQCMEEmPwF1AvcGtx0qbNbqCJL2kSB8Y5ShN3y9S1I8kG-_ekDMQRyZIt69mWHyGXFDIKtLxZZb1G1WG3yBhAmQGNAUdkREWVp5xxcUxGAGySCqDilJx5v4IIlpCPyOt8ib3DYLVqE9WZBD836Owau_DdUO3eW5_0TRIwLNGhSeptv09s54OqbWvDUCcLp3ZD-aF26M_JSaNajxc_eUzeHu7n06d09vL4PL2bpTqv8pDyCQUBRZ0bVBzQAKKujKE5503NCoo5CsObgnNR8Iox0dSaU61RM2SomnxMrg97N65_36IPcm29xraNMvqtlwwKKCtWRrA8gNr13jts5Ca-qNxeUpCDQ7mSvw7l4FACjQFx8OrngvJRUONUp63_mxYF8GIyidztgcP47s6ik15b7DQa61AHaXr736kvMFCM2A</recordid><startdate>20070201</startdate><enddate>20070201</enddate><creator>Radhakrishnan, Sreeram</creator><creator>Datla, Raju</creator><creator>Hires, Richard I.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope></search><sort><creationdate>20070201</creationdate><title>Theoretical and experimental analysis of tethered buoy instability in gravity waves</title><author>Radhakrishnan, Sreeram ; Datla, Raju ; Hires, Richard I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c373t-5910804b3dea50ed0eec7dd1355fb241e3e8d5f4558457228fbc51ccec2e2eaf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Applied sciences</topic><topic>Buildings. 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Transverse instability was observed when the period of the wave generated was close to one-half of the natural period of the buoy. The transverse instability confirmed as Mathieu type was predominant at the surface but diminished with increase in the depth of submergence. The stable and unstable zones were determined on the Mathieu's instability diagram. Experimental results were in agreement with the predicted zone of instability for a two degree of freedom oscillation problem of Mathieu type which has a periodically varying spring constant.</abstract><cop>Amsterdam</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.oceaneng.2006.01.010</doi><tpages>14</tpages></addata></record> |
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| ispartof | Ocean engineering, 2007-02, Vol.34 (2), p.261-274 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences Buildings. Public works Exact sciences and technology Ground, air and sea transportation, marine construction Hydraulic constructions Marine Marine and water way transportation and traffic Mathieu instability Parametric excitation Tethered spherical buoy |
| title | Theoretical and experimental analysis of tethered buoy instability in gravity waves |
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