AN AUTOMATIZED IN-PLACE ANALYSIS OF A HEAVY LIFT JACK-UP VESSEL UNDER SURVIVAL CONDITIONS
Heavy lift jack-up vessels (HLJV) are used for the installation of components of large offshore wind farms. A systematic FE-analysis is presented for the HLJV THOR (owned by Hochtief Infrastructure GmbH) under extreme weather conditions. A parametric finite element (FE) model and analysis are develo...
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| Format: | Article |
| Language: | English |
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University of Niš
2014-08-01
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| Series: | Facta Universitatis. Series: Mechanical Engineering |
| Online Access: | http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/285 |
| Summary: | Heavy lift jack-up vessels (HLJV) are used for the installation of components of large offshore wind farms. A systematic FE-analysis is presented for the HLJV THOR (owned by Hochtief Infrastructure GmbH) under extreme weather conditions. A parametric finite element (FE) model and analysis are developed by using ANSYS-APDL programming environment. The analysis contains static and dynamic nonlinear FE-calculations, which are carried out according to the relevant standards (ISO 19905) for in-place analyses of jack-up vessels. Besides strategies of model abstraction, a guide for the determination of the relevant loads is given. In order to calculate the dynamic loads, single degree of freedom (SDOF) analogy and dynamic nonlinear FE-calculations are used. As a result of detailed determination of dynamic loads and consideration of soil properties by spring elements, the used capacities are able to be reduced by 28 %. This provides for significant improvement of the environmental restrictions of the HLJV THOR for the considered load scenario. |
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| ISSN: | 0354-2025 2335-0164 |