Numerical failure Assessment of a Double-hull Tanker Ship colliding with a Container Ship

Abstract

The risk of ship collisions has increased rapidly, particularly with high maritime traffic. Consequently  ,an extensive demand is required for environmental protection and safety at sea. Structural failure during a collision event must be considered in the structural design stage. This study aims to assess numerically  the structural response of a double-hull tanker ship colliding with a striking container ship. A numerical model is performed, using  nonlinear finite element analysis. To improve the numerical results, true stress -strain and failure criteria of material were used. Fine elements were used at impacted area to predict the local deformation accurately. Finally, a parametric study has been carried out to investigate the effects of the ship velocity, impact region, friction coefficient, and collision angle on the total dissipated energy of the impacted ship. The obtained results can contribute  to  improving the structural integrity of  ship against external loading.