STATISTICAL ESTIMATION OF TANK STRESS BY TOTAL SYSTEM ANALYSIS FOR A SPHERICAL LNG SHIP TANK

This paper explains and discusses an analysis procedure called "Total System Analysis" (TSA) procedure, which has been developed to accurately estimate long-term statistical values of tank stresses. This procedure is an extension of the concept of the commonly-used statistcal analysis of the long-term prediction of response of ship's motions and wave induced loadings; the procedure treats non-linear stresses as well as linear ordinary stress components. In establishing the procedure specific items such as the introduction of stress response functions, the problems of non-linear stresses and the approximation of probability density functions of tank stress local maxima (or minima) to Rayleigh distributions, etc. are discussed. These items are verified by numerical experiments by a computer. A Hitachi Zosen CBI type spherical tank on a 130,000 cubic meter LNG carrier has been analyzed by the TSA procedure; the results show that the correlations between types of wave induced loadings have a large influence on the tank stress, tending to reduce it, and that the non-linear stresses including the influence of correlations between the stress components are smaller than those without the above influence.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/05148499
• Corporate Authors:

  Society of Naval Architects of Japan

  23 Shiba-kotohiracho, Minato-ku
  Tokyo 135,   Japan 
• Authors:
  • Harada, K
  • Tateishi, M
  • Ikeda, J
  • Hori, T
  • TANAKA, M
  • Kataza, T
• Publication Date: 1978-6

Media Info

• Features: References;
• Pagination: p. 366-380
• Serial:
  • Journal of the Society of Naval Architects of Japan
  • Volume: 143
  • ISSN: 0514-8499

Subject/Index Terms

• TRT Terms: Buckling; Container tanks; Deformation; Dynamic loads; Force; Hulls; Liquefied gases; Liquefied natural gas; Loads; Shear strength; Static loads; Statistical analysis; Stresses; Structural analysis; Tankers; Waves
• Old TRIS Terms: Hull deformation; Shearing force; Static loading; Tank stresses; Wave induced loads
• Subject Areas: Data and Information Technology; Marine Transportation; Materials;

Filing Info

• Accession Number: 00180250
• Record Type: Publication
• Source Agency: Society of Naval Architects of Japan
• Files: TRIS
• Created Date: Sep 27 1978 12:00AM