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THERMAL STRESSES IN UNINSULATED DOUBLE-SHELL, SHIPS STRUCTURES.

Author(s) : MAGRINI U., MILANO G., PISONI C.

Summary

IN THE CASE OF SEA TRANSPORT OF HIGH VISCOSITY OILS AND GENERALLY IN REFRIGERATED TRANSPORT, UNINSULATED DOUBLE-SHELL SHIPS ARE FREQUENTLY UTILIZED. THE DOUBLE-SHELL PLATING CAN BE SUBJECT TO RELEVANT THERMAL GRADIENTS, GIVING RISE BOTH TO HIGH OVERALL HEAT TRANSFER VALUES AND TO CORRESPONDING THERMAL STRESSES. THE PROBLEM OF HEAT TRANSFER IN STRUCTURES OF THIS KIND IS CONSIDERED AND SOME SIMPLE FINITE ELEMENT MODEL ARE PROPOSED TO EVALUATE THE STRESS-STRAIN DISTRIBUTION PRODUCED BY TEMPERATURE GRADIENTS. THE SPATIAL TEMPERATURE DISTRIBUTION AND THE CORRESPONDING THERMAL STRESSES ARE EVALUATED WITH SUITABLE COMPUTER PROGRAMS TAKING INTO ACCOUNT THE ACTUAL GEOMETRIC AND THERMAL BOUNDARY CONDITIONS AND THE THERMO-MECHANICAL INTERACTION OF THE STIFFENING STRUCTURES. THE THERMAL STRESSES MAY REACH VALUES OF THE ORDER OF ABOUT 30% OF THE YIELD STRESS.

Details

  • Original title: THERMAL STRESSES IN UNINSULATED DOUBLE-SHELL, SHIPS STRUCTURES.
  • Record ID : 1987-1246
  • Languages: English
  • Publication date: 1986/04/14
  • Source: Source: Frigair '86, Pretoria
    vol. 3; n. 24; 9 p.; 11 fig.; 6 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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