WATER IMPACT LOADS

This paper covers an analysis of different types of slamming experiments with account taken of different model structural characteristics and the effect of air entrapped in the water. Model data for peak impact pressure are found to correlate on the basis of an absolute pressure ratio and a velocity ratio that accounts for inertial effects. Scaling laws for slamming are identified. Impact pressure data from full-scale trails is compared with model data on the basis of the scaling laws identified from model data to demonstrate that the model data and the scaling laws are applicable to full-scale ships. Scale effects which may cause errors when extrapolating model results for impact pressure to the full-scale are also discussed. A proposed basis for estimation of peak pressures for water impacts by use of model results is shown to result in conservative predictions when compared to full-scale measurements.

• Supplemental Notes:
  • Presented at the Chesapeake Section Meeting of the SNAME.
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Sellars, F H
• Publication Date: 1975-2-25

Media Info

• Features: Appendices; References;
• Pagination: 38 p.

Subject/Index Terms

• TRT Terms: Impact; Impact loads; Pressure; Slamming
• Uncontrolled Terms: Scaling laws
• Old TRIS Terms: Impact pressure
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00084451
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Files: TRIS
• Created Date: May 7 1975 12:00AM