Ship Collision Risk Assessment

Article Engineering, Marine

Effects of Local Denting and Fracture Damage on the Residual Longitudinal Strength of Box Girders

Sang-Hyun Park et al.

Summary: The residual strength of denting- and fracture-damaged box girders was investigated through experiments and numerical analyses. The experiments were conducted using the four-point bending test method, measuring load, deflection, and strain. Strains of the extension structures and frictional forces were also measured. Two groups of test models were fabricated to estimate the residual strength, induced by striker release and considering initial imperfection data and welding residual stresses through numerical analysis. The inclusion of frictional forces reduced the ultimate longitudinal moments by an average of 12%.

JOURNAL OF MARINE SCIENCE AND ENGINEERING (2023)

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Article Engineering, Marine

Requirements for Optimal Local Route Planning of Autonomous Ships

Sung-Wook Ohn et al.

Summary: The study developed requirements for optimal local path planning of autonomous ships by considering various scenarios and navigation practices, as well as the rules in COLREGs part B. These requirements can be used to improve existing path-planning algorithms and develop superior algorithms in the future.

JOURNAL OF MARINE SCIENCE AND ENGINEERING (2023)

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Article Engineering, Marine

An Improved Bald Eagle Search Algorithm for Global Path Planning of Unmanned Vessel in Complicated Waterways

Yongjun Chen et al.

Summary: This paper proposes a Self-Adaptive Hybrid Bald Eagle Search (SAHBES) Algorithm for path planning of unmanned ships in complex waters. The algorithm combines adaptive factors with the traditional BES algorithm to enhance its global searching ability. Pigeon-Inspired Optimization (PIO) is introduced to overcome the local optimization problem of traditional BES algorithms. Simulation results show that the SAHBES algorithm can generate the shortest safe and smooth path in different complex water environments, verifying its feasibility and efficiency.

JOURNAL OF MARINE SCIENCE AND ENGINEERING (2023)

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Article Engineering, Marine

Modelling Manoeuvrability in the Context of Ship Collision Analysis Using Non-Linear FEM

Simun Svilicic et al.

Summary: Ship collisions are rare events but can have significant impacts on safety and the environment. To accurately assess collision risks, it is important to model a ship's maneuverability. This article reviews different hydrodynamic derivatives and their impact on collision risk assessment.

JOURNAL OF MARINE SCIENCE AND ENGINEERING (2023)

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Article Engineering, Marine

A Data-Driven Intelligent Prediction Approach for Collision Responses of Honeycomb Reinforced Pipe Pile of the Offshore Platform

Lei Yang et al.

Summary: This paper proposes a data-driven intelligent approach for predicting the collision response of honeycomb-reinforced structures under ship collision. The artificial neural network (ANN) is combined with the dynamic particle swarm optimization (DPSO) algorithm to predict the collision responses of honeycomb reinforced pipe piles. The proposed model provides a robust and efficient assessment tool for the safe design of offshore platforms under ship collisions.

JOURNAL OF MARINE SCIENCE AND ENGINEERING (2023)

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Article Engineering, Marine

The Effect of Dynamic Fracture Strain on the Structural Response of Ships in Collisions

Sang Jin Kim et al.

Summary: This study investigates the impact of dynamic fracture strain (DFS) on structural damage from collisions. Empirical formulas developed based on predictions of damage from various events provide insights into the relationship between DFS and damage, helping determine upper and lower bounds of collision damage.