Ice Collision Analysis and Alternative Full Scale Impact Test for ARC 7 LNG Carrier

The structural strength of ARC7 LNG carrier was guaranteed in consideration of reinforcement according to class rule. But more detailed strength estimation based on directly calculated ice loads followed by FEA was requested to secure the structural strength under the unexpected ice conditions. For ice conditions from ARC7 requirement, detailed ice collision analysis was carried out to verify hull strength as well as safety of CCS (Cargo Containment System). Based on ice load from direct calculation, the nonlinear static analysis was carried out according to ice collision scenarios defined by ship speed and ice thickness. The unexpected thick ice may cause high stress in local ice belt zone even though Arctic class vessel has strongly reinforced structure against ice loads. Therefore, the full scale impact test was also performed to check the soundness of hull structure and weld strength against dropping steel object. The high local strain was measured by means of strain gauges. The measured structural response was compared to FE analysis result.

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  • English

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  • Accession Number: 01747098
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 17 2020 2:11PM