ICE FORCE ESTIMATION DURING LOCAL IMPACT OF A SHIP'S PLATE

To effectively design a ship to withstand ice loads, an understanding of those loads and of the associated structural response of the ship is required. Although vibration measuring instruments have now enabled fast and accurate measurement of the ship structural response, the forces that cause them have not been determined with sufficient accuracy. The authors propose an inverse approach to identifying these local ice impact loads on the hull plates. Their algorithm for the solution of the inverse problem is based upon measured dynamic plate response, in the frequency domain. The procedure is used to determine the impact load on a square plate, using the experimental acceleration measured at the center of the plate. Additional assistance is provided through the use of finite element modeling. Comparisons are shown between computed and experimentally-obtained results.

• Supplemental Notes:
  • Conference paper
• Authors:
  • Omar, A F
  • Swamidas, A S
• Conference:
  • Polartech '88
  • Location: Trondheim, Norway
  • Date: 1988-6-15 to 1988-6-17
• Publication Date: 0

Media Info

• Features: References;
• Pagination: 12p.

Subject/Index Terms

• TRT Terms: Algorithms; Estimating; Finite element method; Ice navigation; Impact loads; Structural plates
• Uncontrolled Terms: Plates
• Old TRIS Terms: Ice forces
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00656581
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM