STRENGTH OF THE LPG CARRIER WITH INDEPENDENT TANKS--EFFECT OF THE TANK ON THE SHIP HOLD STRENGTH AND THERMAL STRESS OF SHIP STRUCTURE DUE TO LEAKAGE OF LIQUEFIED GAS

The behavior of the LPG carrier double bottom differs from that of ordinary cargo ships, because the load of the independent rigid tank with liquefied gas is not distributed uniformly to the double bottom. To investigate the effect of the independent tank on the ship hold strength, the authors carried out a structural analysis on the ship frame of an LPG carrier. As a result of the analysis, it was clarified that, under the ballast condition--the severest condition for the double bottom, the bending moment at the center of the double bottom decreases to 50 to 60% of that in the case where the tank's rigidity is not taken into account. Moreover, the authors carried out a thermal stress analysis of the above ship's hull by the Finite Element Method (F.E.M.), supposing that the liquefied gas in the tank was leaking into the ship hold. During such leakage in general, the possibility of brittle fracture due to low temperature, thermal stress and other stresses is a large problem. From the analysis, it became clear that it is possible for fairly high stress to occur locally.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00189820
• Corporate Authors:

  Ishikawajima-Harima Heavy Industries Co., Ltd.

  2-16, Toyosu 3 Chome, Koto-Ku
  Tokyo 135,   Japan 
• Authors:
  • Agawa, Y
  • Miyanari, T
  • ANO, Y
  • Sai, M
• Publication Date: 1977-1

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 21-29
• Serial:
  • IHI Engineering Review
  • Volume: 10
  • Issue Number: 1
  • ISSN: 0018-9820

Subject/Index Terms

• TRT Terms: Bending moments; Container tanks; Design; Equipment design; Hulls; Liquefied gases; Liquefied petroleum gas; Structural analysis; Tankers; Thermal stresses
• Old TRIS Terms: Hull bending moments; Tank design
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00151982
• Record Type: Publication
• Source Agency: Ishikawajima-Harima Heavy Industries Co., Ltd.
• Files: TRIS
• Created Date: Apr 13 1977 12:00AM