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Frequency tuning of offshore platforms by liquid sloshing
The energy-absorbing characteristic of liquid sloshing can be used to reduce the dynamic response of an offshore platform. The finite element program for dynamic analysis of two-dimensional fixed offshore platforms, developed by DuVall1, is extended to include the operation of a deck-mounted liquid vibration absorber. The structural response of the model is determined for a digitized wave height spectrum, with and without the vibration absorber in operation. The system response is determined for variations of the following parameters: cylinder radius, liquid height, mass, frequency, and damping of the absorber. Possible methods of frequency tuning, and damping device mechanisms are suggested.
Frequency tuning of offshore platforms by liquid sloshing
The energy-absorbing characteristic of liquid sloshing can be used to reduce the dynamic response of an offshore platform. The finite element program for dynamic analysis of two-dimensional fixed offshore platforms, developed by DuVall1, is extended to include the operation of a deck-mounted liquid vibration absorber. The structural response of the model is determined for a digitized wave height spectrum, with and without the vibration absorber in operation. The system response is determined for variations of the following parameters: cylinder radius, liquid height, mass, frequency, and damping of the absorber. Possible methods of frequency tuning, and damping device mechanisms are suggested.
Frequency tuning of offshore platforms by liquid sloshing
Lee, S.C. (author) / Reddy, D.V. (author)
Applied Ocean Research ; 4 ; 226-231
1982-01-01
6 pages
Article (Journal)
Electronic Resource
English
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