WAVE LOADS ACTING ON THE SIDE SHELLS OF LARGE SHIPS IN VERY SHORT WAVE LENGTH

It has been recently reported that in spite of a small ship motion, damage occurred on a large ship at the side shell near the free surface. It is considered that this is because of fatigue of the structural member in oblique short waves. This hydrodynamic pressure acting on a ship's side can be estimated using the strip method, however in the case of short waves another simple theory is proposed. When considering hydrodynamic pressure acting on the side shell near the free surface, the profile of hydrodynamic pressure is partially criped because of the exposure of the point of the side shell to the air. The variance of load at this point is very different from the result analyzed by linear theory which strongly effects the fatigue. By using the linear theory, the short and long term prediction of loads does not give valid results. This paper shows a simple method to estimate hydrodynamic pressure acting on the side shell near the free surface, and that the way to treat nonlinear loads such as cripped profile is very important in considering hydrodynamic load distribution.

  • Supplemental Notes:
    • J Kansai Soc Naval Architects, n 224, Sept 1995, p 95 [10 p, 7 ref, 18 fig]
  • Authors:
    • Naito, S
    • Kihara, H
    • Nishimura, N
  • Publication Date: 1995

Language

  • Japanese

Subject/Index Terms

Filing Info

  • Accession Number: 00718781
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 27 1996 12:00AM