STATISTICAL ESTIMATION OF TANK STRESS BY TOTAL SYSTEM ANALYSIS FOR SPHERICAL TANK LNG CARRIER (PHASE II). APPLICATION OF EVALUATED STRESS TO FAILURE ANALYSIS

In the safety assessment of the Hitachi Zosen-CBI spherical tank LNG carrier, the procedures of stress estimation are divided into two stages. In the first stage, applying the results of ship motion analyses, stress components at each point in the tank are obtained as random processes (Stress Analysis Phase I). Since the stress components can be considered linear to the original load, sea wave, those are regarded as normal random processes. In the second stage, in order to apply the results of the first stage to the next analysis, failure analyses, it is investigated what kinds of stress quantities should be applied to each failure modes, and how to obtain those including their statistical characteristics (Stress Analysis, Phase II). In the present paper, the procedures in the second stage above are mainly discussed, focusing on fatigue strength, crack propagation strength, crack propagation and buckling strength as the main failure modes in the tank of LNG carrier.

  • Corporate Authors:

    Hitachi Zonsen Company Limited, Technical Inst

    60, Sakurajima Kitanomachi, Konohanaku
    Osaka,   Japan 
  • Authors:
    • Hori, T
    • Tanmaka, M
    • Tateishi, M
    • Ikeda, J
  • Publication Date: 1978-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00190423
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Mar 28 1979 12:00AM