STRUCTURAL ANALYSIS OF LNG VESSELS IN A SEAWAY

The advent of the liquefied natural gas (LNG) carrier has necessitated a great understanding of a vessel's operating environment in order to effectuate the design of a sound, optimum, cost-effective structure. The exotic, complex containment systems required to carry the cyrogenic cargo in liquefied form at a temperature of -260 F, and the somewhat unusual and large hull proportions, call for technological expertise and innovative methods on the part of both the designer and classification society. It is the purpose of this paper to describe an analytical approach to the structural analysis of LNG vessels under the effects of static and dynamic loadings. A system of computer programs is utilized to statistically predict a vessel's dynamic response in a seaway, the results of which are in turn input to the DAISY finite element computer program for structural analysis. The efficacy of the analytical procedure is illustrated by investigating two different types of tank containment systems in large LNG vessels.

• Supplemental Notes:
  • Presented at the International Conference on Computer Applications in the Automation of Shipyard Operation and Ship Design, held by IFIP/IFAC/JSNA, Tokyo, Japan, Aug. 28-30, 1973.
• Corporate Authors:

  North Holland Publishing Company

  335 Jan Van Galenstraat, P.O. Box 103
  Amsterdam-W,   Netherlands 
• Authors:
  • Jan, H Y
  • Liu, Dan
  • Shapiro, A D
• Publication Date: 1973

Media Info

• Features: References;
• Pagination: 8 p.
• Serial:
  • Issue Number: V-4

Subject/Index Terms

• TRT Terms: Analysis; Computer aided design; Finite element method; Hulls; Information processing; Liquefied gases; Liquefied natural gas; Stresses; Tankers
• Uncontrolled Terms: Computer aided analysis
• Old TRIS Terms: Hull stress
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00051988
• Record Type: Publication
• Source Agency: Purdue University
• Files: TRIS
• Created Date: Apr 17 1974 12:00AM