Technology
Assessment & Research (TA&R) Program
|
Project
Number |
2 |
| Date of Summary |
December 31, 1983 |
| Subject |
Dynamic Response of Offshore
Structures |
| Performing Activity |
Massachusetts Institute of
Technology |
| Principal Investigator |
Dr. J. Kim Vandiver |
| Contracting Agency |
Minerals Management Service |
| Completion |
Complete |
| Description |
Fluid-structures interaction
research to predict fatigue life of offshore platforms. Determine structural response
properties (such as natural frequencies, damping and modal shapes) from field data.
Predict the dynamic response of structures to wave and ground excitation. Project No. 36 is an adjunct project to this
investigation. |
| Progress |
Complete. Two high resolution
spectral estimators were applied to assess the amount of structural damping: maximum
likelihood spectral analysis (MLM) (to locate frequency bands of energy) and maximum
entropy analysis (MEM) (to assess energy levels in the various bands). Results indicate
lower damping than commonly believed. The MEM damping estimators were compared to results
measured by Shell and agreed to within confidence bounds. Multiple channel MEM techniques
were investigated to identify modal shapes. The research applied unique relationships
between linear wave forces and wave radiation damping and revealed additional useful
relationships between nonlinear drag forces and viscous hydrodynamic damping. |
| Reports |
| AA
(588
KB PDF) |
Vandiver, J. K., The Effect of
Liquid Storage Tanks on the Dynamic Response of Offshore Platforms, Proceedings: 1978
Offshore Technology Conference, Volume I, pp. 3162, May 1978. |
| AB
(518
KB PDF) |
Vandiver, J. K., Campbell, R. B.,
Prediction of the Damping Controlled Response of
Offshore Structures to Random Excitation,11th Annual OTC, Houston, TX,
April 1979. |
| AC
(Out of print) |
Vandiver, J. K., Campbell, R. B.,
Prediction of the Damping Controlled Response of Offshore Structures to Random Excitation,
Offshore Technology Conference, Proceedings Paper No. 3515, pp. 1355-1364, Houston, Texas,
May 1979. |
| AD
(410
KB PDF |
Campbell, R. B., Vandiver, J. K.,
The Estimation of Natural Frequencies and Damping Ratios of Offshore Structures,
Proceedings 1980, Offshore Technology Conference, Paper No. 3861, May 1980. |
| AE
(229
KB PDF) |
Vandiver, J. K., The Prediction
and Measurement of the Dynamic Properties of Offshore Structures, Annual Technical Project
Report, R&D Program for OCS Oil and Gas Operations, September 1980. |
| AF
(553
KB PDF) |
Vandiver, J. K., Prediction of
the Damping Controlled Response of Offshore Structures to Random Wave Excitation, Society
of Petroleum Engineers Journal, February 1980. |
| AG
(1.992
KB PDF) |
Dunwoody, A. B., The Role of
Separated Flow in the Prediction of the Dynamic Response of Offshore Structures to Random
Waves, Ph.D. Thesis, Massachusetts Institute of Technology, Cambridge, Massachusetts, May
19, 1980. |
| AH
(470
KB PDF) |
Vandiver, J. K., Dunwoody, A. B.,
Campbell, R. B., A Mathematical Basis for the Random Decrement Vibration Signature
Analysis Technique, R&D Program for OCS Oil and Gas Operations, February 1981. |
| AI
(Out of print) |
Manuel F., Detection of
Structural Damage in Offshore Structures by Vibration Monitoring of Their Elements, Master
of Science in Ocean Engineering, Massachusetts Institute of Technology, Cambridge,
Massachusetts, 1981. |
| AJ
(928
KB PDF) |
Vandiver, J. K., The Significance
of Dynamic Response in the Estimation of Fatigue Life, Report to the Norges Tekniske
Hogskole, Trondheim, Norway, October 1980. |
| AK
(421
KB PDF) |
Cook, M. F., Vandiver, J. K.,
Measured and Predicted Dynamic Response of a Single Pile Platform to Random Wave
Excitation, Proceedings of the 1982 Offshore Technology Conference, Paper No. 4285,
Houston, Texas, May 1982. |
| AL
(246
KB PDF) |
Vandiver, J. K., The Significance
of Dynamic Response in the Estimation of Fatigue Life, Paper 81-WA-OCE-13, ASME Winter
Annual Meeting, Washington, D.C., December, 1982. |
| AM
(417
KB PDF) |
Vandiver, J. K., The Sensitivity
of Fatigue Life Estimates to Variations in Structural Natural Periods, Modal Damping
Ratios, and Directional Spreading of the Seas, Proceedings of the Third International
Conference on the Behavior of Offshore Structures, Massachusetts Institute of Technology,
Cambridge, MA, 1982. |
| AN
(414
KB PDF) |
Vandiver, J. K., Briggs, M. J.,
Multichannel Maximum Entropy Method or Spectral Analysis Applied to Offshore Platforms,
Proceedings, 1982 Offshore Technology Conference, OTC Paper No. 4286, Houston, Texas, May
1982. |
| AO
(2.348
KB PDF) |
Vandiver, J. K., Dynamic Response
of Offshore Structures, Annual Technical Report, USGS Contract No. 24-08-0001-20605,
Massachusetts Institute of Technology, Cambridge, Massachusetts, August 31, 1982. |
| AP
(2.024
KB PDF) |
Samii, K., Auto-Regressive Moving
Average Simulations of Random Wave Forces on Offshore Structures, Ph.D. Dissertation,
Massachusetts Institute of Technology, Department of Ocean Engineering, Cambridge,
Massachusetts, August 1983. |
| AQ
(804
KB PDF) |
Ghosh, P. K., The Prediction of
Hydrodynamic Viscous Damping of Offshore Structures in Waves and Current by the Stochastic
Linearization Method, M.S. Thesis, Massachusetts Institute of Technology, Department of
Ocean Engineering, Cambridge, Massachusetts, May 1983. |
| AR
(325
KB PDF) |
Vandiver, J. K., Dynamic Response
of Offshore Structures, Annual Technical Report, USGS Contract No. 14-08-0001, 20605,
Massachusetts Institute of Technology, Cambridge, Massachusetts, November 1, 1983. |
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