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Numerical validation tests of a damage assessment tool based on super-element method within the scope of A.D.N. regulations
Published in C. Guedes Soares, Y. Garbatov, Progress in the Analysis and Design of Marine Structures, 2017
S. Paboeuf, Y.P. Sone Oo, H. Le Sourne
Nowadays, due to the continuous increase in inland waterway navigation, there has been a higher risk of collisions, groundings, and of other undesired events. Especially for inland ships carrying dangerous goods, the consequences of ship collision would lead to serious environmental pollution as well as economic losses. Therefore, rules have been published by A.D.N. Regulations which contain the requirements for the design and constructions of inland vessels carrying dangerous goods. According to A.D.N., the risk of cargo tank failure of the alternative design should be lower than or equivalent to the conventional construction. This approach has been clearly described in the A.D.N. Regulations (2015) and consists in determining the probability of cargo tank rupture using Finite Element Analysis (FEA). However, such numerical approach is often time consuming and very expensive, and therefore, is usually prohibited in the preliminary design phases.
Ship collision with bridges, review of accidents
Published in Henrik Gluver, Dan Olsen, Ship Collision Analysis, 2017
Sipke E. van Manen, Aksel G. Frandsen
The causes of ship collision can roughly be divided into three main groups: human error, technical failure and extreme external circumstances. The last category is doubtful though, because it is often a combination of careless navigation and bad weather that causes the collision. Even in situations where barges break loose from their moorings due to a heavy storm and drift against bridge piers, causing a serious accident, one could find arguments leading to human error instead of extreme conditions. On top of that, by reading the collision reports, one cannot disregard the feeling that in some occasions the real cause is human error, but because of personal (legal) consequences, mitigating circumstances are brought forward.
An intelligent method for real-time ship collision risk assessment and visualization
Published in C. Guedes Soares, Developments in the Collision and Grounding of Ships and Offshore Structures, 2019
L. Du, O.A. Valdez Banda, P. Kujala
Ship collision is one of the most frequent maritime accident types because of the complexity and nonlinearity of traffic flow and uncertain navigation environment, which poses a significant threat to human life, environment protection, and commercial property. Even though many efforts have been made to achieve safe maritime transportation (Mou et al., 2015; Valdez Banda & Goerlandt, 2018), the ship collision remains high occurrence frequency, around 3400 per year (EMSA, 2018). Therefore, it is of crucial importance to prevent ship collision at sea for the sake of maritime authorities, navigators and other related stakeholders.
Rapid assessment of ship raking grounding on elliptic paraboloid shaped rock
Published in Ships and Offshore Structures, 2021
J. P. Pineau, H. Le Sourne, Z. Soulhi
Collisions and groundings have always been a concern for ship owners and public opinion. Such events still today constitute a significant part of ship accidents. According to European Maritime Safety Agency (EMSA 2018), they were representing in 2018 more than 50% of accidents causalities. The damage caused by ship collision and grounding may result in environmental pollution, economic loss, sinking of the vessel and loss of human life. Formal risk assessment requires to quantify the consequences of such accidents considering numerous scenarios. Although non-linear finite element method (NLFEM) is nowadays recognised as the most accurate approach for simulating ship collision and grounding events, both model set-up and numerical solution are very time-consuming. Therefore, NLFEM is not well suited at the pre-design stage or to complete a full accident risk analysis. As an alternative to numerical analysis, several authors developed fast and reliable analytical tools based on semi-empirical formulas – see Zhang et al. (2019) – or plastic limit analysis for ship collision – see Paboeuf et al. (2016, 2017) and Le Sourne et al. (2012) – and grounding – see Friis-Hansen and Simonsen (2002). Along the past decade, analytical developments regarding ship grounding have mainly been focused on modelling ship bottom sliding over large rock surfaces – see Hong and Amdahl (2008, 2012); Yu et al. (2013, 2015) and Hu et al. (2016). In such cases, even if the hull damage may be significant, the outer bottom plating is not supposed to be torn up.
Consequence analyses of collision-damaged ships — damage stability, structural adequacy and oil spills
Published in Ships and Offshore Structures, 2023
Artjoms Kuznecovs, Jonas W. Ringsberg, Anirudh Mallaya Ullal, Pavan Janardhana Bangera, Erland Johnson
Negative consequences from ship collision accidents can be related to oil spills, insufficient damage stability, structural adequacy, or a combination of these. These consequences may pose threats to the crew and passengers, the environment and material assets. To provide common means for comparison purposes, all consequences are assessed in monetary values. The consequence costs are assumed to depend on the post-accident vessel condition, and the cost components are defined through scenarios associated with the respective condition according to Table 2. Therefore, the final costs vary with the severity of the collision accident’s consequences.
Effects of a deformable striking ship's bow on the structural crashworthiness in ship–ship collisions
Published in Ships and Offshore Structures, 2018
Yeong Gook Ko, Sang Jin Kim, Jeom Kee Paik
Regardless of the continuous efforts to prevent ship–ship collision accidents, they continue to occur leading to unwanted consequences such as property damage and marine pollution. For robust design and operation of ship structures in association with ship–ship collision accidents, accidental limit state (ALS) assessment is required (Paik and Thayamballi 2007; Paik 2018).