Analytical and numerical investigation of shear stress of a container ship under constant torsional moment

In ships which have large deck openings, structural effects related to torsional moments are of great importance. The main parameter of the formation of torsional moment is to take the waves from the bows of the ship and non-symetrical loadings. The shear stress which is caused by the torsional moment can reach to remarkable values due to the deck openings. In this study, calculation and comparison of the shear stress due to torsional moment on the cross section of a containership with large deck openings has been examined using analitical and numerical methods. Turkish Lloyd's Rules have been used for dimensioning the containership and calculating the applied uniform torsional moment. Uniform torsion ( St. Venant's Torsion) theory was used for the analitical calculations. Finite element method was used for the numerical calculations. 3D model was built using SolidWorks 2012 software, and HyperWorks software was used for the FE analysis.