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

Author:

Kim Sang JinORCID,Sohn Jung Min

Abstract

As ship collisions and grounding accidents lead to human injury and damage to the environment and property, more accurate predictions of structural damage to ships under impact loads are needed. Currently, to determine structural behaviors, finite element analysis (FEA) is frequently adopted. However, it is recommended to pay attention to material properties in FEA because structural damage is sensitive to material properties such as yield strength, fracture strain, etc. While the strain rate (impact speed) is automatically considered for dynamic yield stress using the Cowper–Symonds equation or other methods, the pre-defined fracture strain is generally used as the dynamic fracture strain (DFS), which is not dependent on strain rate during the simulation. This assigned value of fracture strain may affect the extent of damage and structural response. In this study, the effect of the DFS on the structural damage from collisions was investigated to determine the relationship between the DFS and damage. Empirical formulas based on predictions of damage by various events were developed as a function of the DFS and initial impact speed. The results of this study explained the effect of the DFS on the structural damage and determined the upper and lower bounds of damage by collisions.

Funder

National Science and Technology Council, Taiwan

Publisher

MDPI AG

Subject

Ocean Engineering,Water Science and Technology,Civil and Structural Engineering

Reference27 articles.

1. Annual Overview of Marine Casualties and Incidents 2021, 2021.

2. Modeling of Ship Collision Probability using Dynamic Traffic Simulation;Goerlandt;Reliab. Risk Saf.,2010

3. Traffic Simulation based Ship Collision Probability Modeling;Goerlandt;Reliab. Eng. Syst. Saf.,2011

4. Paik, J.K., Kim, S.J., Ko, Y.G., and Youssef, S.A.M. Collision Risk Assessment of a VLCC Class Tanker. Proceedings of the Society of Naval Architects and Marine Engineers Maritime Convention.

5. Methodology for Collision-frequency Analysis of Wind-turbine Installation vessels;Kim;Ships Offshore Struct.,2021

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Ship Collision Risk Assessment;Journal of Marine Science and Engineering;2023-07-03

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