APPLICATION OF THE RIGID FINITE ELEMENTS METHOD TO CALCULATION OF NATURAL VIBRATION FREQUENCIES OF SHIP STRUCTURES

ZASTOSOWANI METODY SZTYUNYCH ELEMENTOW SKONCZONYCH DO OBLICZEN CZESTOSCI DRGAN WLASNYCH USTROJOW OKRETOWYCH

The method described consists in replacing the actual system by a system of rigid finite elements interconnected and attached to the foundation by elastic elements with linear characteristics. The matrix of the equations of motion is constructed directly without their explicit derivation. The accuracy of the computerized method depending upon the number of finite elements is shown on the example of a simple supported prismatic beam. The method described is widely applied in shipbuilding industry for calculations of ship hull vibrations, bending vibrations of propeller shafts, vibrations of so-called floating platforms with elasticity fitted instruments.

• Authors:
  • Kruszewski, J
• Publication Date: 1971

Language

• Polish

Media Info

• Features: References;
• Pagination: p. 499-516
• Serial:
  • Mechanika Teoretyczna i Stosowana
  • Volume: 9
  • Issue Number: 4

Subject/Index Terms

• TRT Terms: Finite element method; Hulls; Natural frequency; Propeller shafts; Ships; Vibration
• Uncontrolled Terms: Natural frequencies
• Old TRIS Terms: Hull vibration; Propeller shaft vibration
• Subject Areas: Design; Marine Transportation; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 00041526
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Mar 2 1973 12:00AM