A NOTE ON THE FORM OF SHIP ROLL DAMPING

The objective of the present work was to develop an approximation to the conventional mixed linear-plus-quadratic ship roll damping model so that analytical obstacles could be overcome in the application of the functional series expansion to non-linear ship rolling. A mixed linear-plus-cubic approximation was found to be reasonable for this purpose. In the course of analyses there were indications that this model may be more generally valid than had initially been thought. (Author)

• Corporate Authors:

  Stevens Institute of Technology

  Davidson Laboratory, Castle Point Station
  Hoboken, NJ  United States  07030
• Authors:
  • Dalzell, J F
• Publication Date: 1976-5

Media Info

• Pagination: 55 p.

Subject/Index Terms

• TRT Terms: Approximation (Mathematics); Damping (Engineering); Damping (Physics); Degrees of freedom; Flow; Hydrodynamics; Hydromechanics; Loads; Nonlinear systems; Operations research; Oscillation; Quadratic equations; Rolling; Seakeeping; Ship motion; Ships; Simulation; Structural models; Turbulence
• Candidate Terms: Turbulent flow
• Uncontrolled Terms: Ship models
• Old TRIS Terms: Roll; Roll damping; Roll simulation; Sea states; Series mathematics
• Subject Areas: Bridges and other structures; Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00145709
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SIT-DL-76-1887 Final Rpt.
• Contract Numbers: N00014-75-C-0278
• Files: TRIS
• Created Date: Jan 16 1977 12:00AM