A parametric study of the non-linear dynamic behaviour of an offshore jack-up unit
The dynamic response of an offshore jack-up unit to environmental loads has been investigated using a two-dimensional, nonlinear finite element model. The model includes realistic representations of the wave loading, the geometric non-linearities of the rig legs and the complex non-linear effects of...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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Elsevier
1999
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| _version_ | 1797075580314714112 |
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| author | Williams, M Thompson, R Houlsby, G |
| author_facet | Williams, M Thompson, R Houlsby, G |
| author_sort | Williams, M |
| collection | OXFORD |
| description | The dynamic response of an offshore jack-up unit to environmental loads has been investigated using a two-dimensional, nonlinear finite element model. The model includes realistic representations of the wave loading, the geometric non-linearities of the rig legs and the complex non-linear effects of combined loads on the spudcan footings. Results are presented from a parametric study in which a typical jack-up unit was subjected to waves of varying height and period. It is shown that the accurate non-linear modelling of both the legs and the spudcan footings has a significant effect on the rig dynamics. The widespread practice of modelling the footings as simple pinned supports may be non-conservative for some sea states. |
| first_indexed | 2024-03-06T23:52:20Z |
| format | Journal article |
| id | oxford-uuid:73070680-9542-40f9-8faa-2e397323dfef |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:52:20Z |
| publishDate | 1999 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:73070680-9542-40f9-8faa-2e397323dfef2022-03-26T19:53:51ZA parametric study of the non-linear dynamic behaviour of an offshore jack-up unitJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:73070680-9542-40f9-8faa-2e397323dfefEnglishSymplectic Elements at OxfordElsevier1999Williams, MThompson, RHoulsby, GThe dynamic response of an offshore jack-up unit to environmental loads has been investigated using a two-dimensional, nonlinear finite element model. The model includes realistic representations of the wave loading, the geometric non-linearities of the rig legs and the complex non-linear effects of combined loads on the spudcan footings. Results are presented from a parametric study in which a typical jack-up unit was subjected to waves of varying height and period. It is shown that the accurate non-linear modelling of both the legs and the spudcan footings has a significant effect on the rig dynamics. The widespread practice of modelling the footings as simple pinned supports may be non-conservative for some sea states. |
| spellingShingle | Williams, M Thompson, R Houlsby, G A parametric study of the non-linear dynamic behaviour of an offshore jack-up unit |
| title | A parametric study of the non-linear dynamic behaviour of an offshore jack-up unit |
| title_full | A parametric study of the non-linear dynamic behaviour of an offshore jack-up unit |
| title_fullStr | A parametric study of the non-linear dynamic behaviour of an offshore jack-up unit |
| title_full_unstemmed | A parametric study of the non-linear dynamic behaviour of an offshore jack-up unit |
| title_short | A parametric study of the non-linear dynamic behaviour of an offshore jack-up unit |
| title_sort | parametric study of the non linear dynamic behaviour of an offshore jack up unit |
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