期刊
JOURNAL OF MARINE SCIENCE AND ENGINEERING
卷 10, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/jmse10091194
关键词
offshore jacket platform; honeycomb reinforced tubular pipe; numerical simulation; ship collision; crashworthiness
资金
- National Natural Science Foundation of China [51879272, 52111530036]
- Fundamental Research Funds for the Central Universities, China [22CX03022A]
This paper investigates the dynamic performance and crushing resistance of honeycomb reinforced structures in platforms under ship collision. The numerical simulation analysis shows that the hexagonal honeycomb structure provides better anti-collision capacity and offers improved protection for the platform pipe legs.
The collision between the pipe legs of jacket platforms and bypassing ships is of great concern for the safety assessment of platforms. Honeycomb structures have been widely used owing to their unique deformation and mechanical properties under dynamic impact loads. In this paper, two typical honeycomb structures, namely hexagonal honeycomb and arrow honeycomb, were constructed for the impact protection of inclined pipe legs in jacket platforms, and the present study aimed to assess the dynamical performance and crushing resistance of the designed honeycomb reinforced structure under ship collision by using the numerical simulation software ANSYS/LS-DYNA. The dynamical performance of the honeycomb reinforced pipe leg was investigated considering various influential parameters, including the impact velocity and impact direction. The crashworthiness of the two types of honeycomb was evaluated and compared by different criteria, namely the maximum impact depth (delta(max)), specific energy absorption (SEA) and the proposed index offset sliding (OS). The results demonstrated that both the hexagonal honeycomb structure and the arrow honeycomb structure can reduce the damage of inclined pipe legs caused by ship collision, while the hexagonal honeycomb can provide the better anti-collision capacity, which can well reduce the offset sliding and better protect the pipe leg from ship collision.
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