SPECTRAL METHODS OF DETERMINING DYNAMIC LOADING
It is frequently necessary to determine the dynamic load due to sea motions on an object placed upon a floating vessel. The object could range from a simple piece of machinery on a foundation to a large offshore structure transported by a barge. It is conventional practice to employ deterministic methods to this end. By deterministic methods, here it is meant to use a motion criteria with prescribed amplitudes and periods to determine inertial and gravity load due to vessel motion. Such practice takes little account of actual periods of the vessel, the ability to change (or control) natural periods, and certainly determinable sea states likely to be encountered. This paper describes a relatively straightforward method to determine dynamic loads on objects subject to vessel motion loading with consideration of the actual characteristics of the vessel on which it is placed and the sea conditions to be encountered. In addition several example applications are described.
- Presented to the Gulf Section of SNAME, February 10, 1978.
Society of Naval Architects and Marine Engineers601 Pavonia Avenue
Jersey City, NJ United States 07306-2907
- Filson, J J
- Prescott, P L
- Publication Date: 1978-2
- Features: References;
- Pagination: 17 p.
- TRT Terms: Dynamic loads; Electromagnetic spectrum; Force; Hydrodynamics; Offshore platforms; Seas; Ship motion; Spectrum analysis; Structural design; Waves
- Old TRIS Terms: Offshore platform design; Sea loads; Sea spectra; Wave forces on structures
- Subject Areas: Bridges and other structures; Design; Hydraulics and Hydrology; Marine Transportation;
- Accession Number: 00173918
- Record Type: Publication
- Source Agency: Society of Naval Architects and Marine Engineers
- Files: TRIS
- Created Date: May 3 1978 12:00AM