Numerical Simulation for the Collision Between Side Structure and Level Ice in Event of Side Impact Scenario

Abstract

With the opening of the Northern Sea for international shipping routes, various vessels prefer to use this option to reach Europe as distance is significantly reduced if a ship is sailing through this route. In the same time, the demand to ensure ship safety rises as impact phenomenon between ship structures and ice causes numerous casualties. This work presented a numerical study with a concentration on contact between ship structures and levels. The double side skin of a chemical tanker was modelled with a shell element while a deformable characteristic was implemented on the ice as an indenter. Several target areas on the side structure were set as impact points based on its stiffener component. Different models of indenter were taken into account in order to observe structural responses and influences of external parameters, namely ice topology, while the described location parameters were taken as the ship's internal parameters. Impact force was presented with total energy, as well as the ratio between kinetic and internal energy. The deformation pattern was used as a verification of the collision process and its subsequent results. Finally, the behavior of the inner walls subjected to type indenters was observed as this component is the final component that maintains liquid cargo and resists an impact load.

Analysis of Structural Crashworthiness and Estimating Safety Limit Accounting for Ship Collisions on Strait Territory

“…To expand our observations on this factor, the 10-kts collision is included for comparison. The internal energy represents the capability of the structure to resist penetration perpendicular to the experienced stress/force (Bae et al, 2016a, b;Prabowo et al, 2016a, b;2017a-d). Therefore, the magnitude of the internal energy is used to assess the safety condition of the structures against side collision loads.…”

“…If the outer shell of the struck ship resists the penetration of the striking ship without the inner shell rupturing, damage to passenger cargo can be minimized in a Ro-Ro passenger ship and oil spillage and flooding can be avoided in a tanker carrier. This concept has been applied in several pioneering studies, namely those of Lützen (2001), Bae et al (2016a, b), and Prabowo (2016a, b). Furthermore, the influence of the external dynamics on ship safety following a collision accident is very significant.…”

Rapid prediction of damage on a struck ship accounting for side impact scenario models

“…This method is judged powerful enough to predict nonlinear phenomenon which is complicated, such as collision [15][16][17][18] and grounding [19]. By this method all design of involved objects' components can be defined in both structural and material levels.…”

Crashworthiness assessment of double-hull tanker structures under ship grounding actions

“…The second form can occur in accidental situations, such as ship grounding. The indenter may be ship [4] and ice [5] for collision. In grounding, an indenter is defined into several topologies to simplify calculation and analysis [6] and may be denoted as obstruction.…”