A scheme for the interpretation of data from instrumented offshore platforms
A procedure is presented for estimating the key parameters associated with the dynamic behaviour of deepwater gravity platforms. Efficient modelling of the coupled soil/structure/fluid system is achieved by the method of component modes. This permits accurate analysis of the dynamic behaviour of the...
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| Published in | Journal of sound and vibration Vol. 64; no. 4; pp. 497 - 513 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Ltd
01.01.1979
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| Online Access | Get full text |
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| Summary: | A procedure is presented for estimating the key parameters associated with the dynamic behaviour of deepwater gravity platforms. Efficient modelling of the coupled soil/structure/fluid system is achieved by the method of component modes. This permits accurate analysis of the dynamic behaviour of the platform with an idealization having only a few co-ordinates. Full-scale measurements (in the form of direct and cross spectral densities of water surface elevation, overturning moment, deck displacement, etc.) may then be used to obtain “best fit” estimates of the unknown stiffness and damping parameters. Computed results demonstrating the technique are presented, in which simulated data from a platform are used to back-figure the stiffness and damping associated with structure and foundation. |
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| ISSN: | 0022-460X 1095-8568 |
| DOI: | 10.1016/0022-460X(79)90800-9 |