FATIGUE STRENGTH OF STRUCTURAL MEMBERS WITH HIGH STRESS CONCENTRATION OF A FAST CONTAINER SHIP IN ROUGH SEAS

Fatigue strength was investigated for structural members with high stress concentration factors in the neighborhood of the front end of the superstructure of a containership. The applied stress was composed of a wave-induced bending stress--including nonlinear effects, whipping components of stresses, and, possibly, coupled vibratory stresses of the superstructure. After calculations of the dynamic stress components among regular waves in head seas, the fatigue strength of highly stressed portions was examined using appropriate S-N curves, and taking into account the effects of ship speed and wave height. When a high speed vessel passes through very rough seas, the fatigue strength may diminish owing to the significant elevation of the repeated stress range caused by the superimposition of whipping components of stress on wave-induced bending stress.

  • Availability:
  • Supplemental Notes:
    • Journal article
  • Authors:
    • Sumi, Y
    • Suzuki, M
    • YAMAMOTO, Y
  • Publication Date: 1988-6

Language

  • Japanese

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00656746
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM