A SEMIEMPIRICAL COMPUTERIZED METHOD FOR PREDICTING THREE-DIMENSIONAL HULL-WATER IMPACT PRESSURE DISTRIBUTIONS AND FORCE ON HIGH-PERFORMANCE HULLS

This report describes the development and usage of a semiempirical, quasi-static computerized method for calculating instantaneous three-dimensional water pressure distributions on high-speed marine vehicles. The method can simulate either planing or hull-wave impacts in three degrees of motion--pitch, heave, and surge. The analysis technique requires hull offsets, trochoidal wave parameters, and such initial condition information as the hull position, the vertical and horizontal velocity components, and the pitch rate. The method can be used to obtain results of varying complexity, including a description of normal pressures for all or selected portions of the hull, a normalized pressure versus impact area relationship, and horizontal and vertical impact forces. The results of its application to the analysis of the hull-wave impact of two model hull configurations are presented although the computer program developed for the method is not documented in this report.

• Corporate Authors:

  Naval Ship Research and Development Center

  Structures Department
  Bethesda, MD  United States  20034
• Authors:
  • Jones, R R
  • ALLEN, R G
• Publication Date: 1972-12

Media Info

• Features: References;
• Pagination: 83 p.

Subject/Index Terms

• TRT Terms: Hulls; Hydroplanes; Impact; Pressure; Ship motion; Slamming; Water waves
• Old TRIS Terms: Hull impact; Hull wave interaction; Impact pressure
• Subject Areas: Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00046682
• Record Type: Publication
• Source Agency: Ship Structure Committee
• Report/Paper Numbers: #4005
• Files: TRIS
• Created Date: Sep 18 1973 12:00AM