Analysis of the influence of the meshing size for an oil tanker structural model on the stress hot spot values

Nicoleta Elena Lazăr; Leonard Domnișoru

doi:10.35219/AnnUgalShipBuilding/2022.45.05

Nicoleta Elena Lazăr “Dunarea de Jos” University of Galati
Leonard Domnișoru “Dunarea de Jos” University of Galati

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Résumé

The development of the shipbuilding industry leads to new requirements for the safety of ships. Stress hot spots are recorded on every floating structure and they influence nega-tively the hull strength. This analysis identifies the stress hot spots and the influence of the meshing size on their values for a 97235 tdw oil tanker, using the Femap/NX Nastran program. Structurally, two constructive options were considered for the central longitudi-nal bulkhead: corrugated and flat panels. The detailed local structural model is devel-oped for three mesh sizes: coarse, medium, and fine. Quad and triangle shell elements are used for the FEM local models.

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Références

[1].FNN,“Femap/NX Nastran users' manual”, Siemens PLM Software Inc., 2022. (https://www.plm.automation.siemens.com/plmapp/education/femap/).
[2].DNV,“Rules”, Det Norske Veritas, 2022. (https://www.dnv.com/rules-standards/).
[3].Domnisoru, L.,"Finite element method in naval constructions”, Technical Publishing House Bucharest, 2001.
[4].JSEA, “SEA Japan”, Japan Ship Exporters' Association, Eureka International Inc., 1997. (https://www.jsea.or.jp/en/)

Analysis of the influence of the meshing size for an oil tanker structural model on the stress hot spot values

Résumé

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Références

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