Numerical analysis of personnel evacuation speed in ship rolling state

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  • (Navigation College, Dalian Maritime University, Dalian 116026, China)

Received date: 2023-03-24

  Revised date: 2023-04-26

  Accepted date: 2023-04-26

  Online published: 2023-04-26

Abstract

In order to study the influence of ship rolling on pedestrian evacuation speed, a three-dimensional dynamic social force model considering ship rolling motion was established by calculating the forces on pedestrians in different dimensions of rolling motion space and based on the realtime updated rolling angle and angular velocity. Taking the rolling amplitude and rolling period as variables to set up multi scene simulation experiments, and calculate the pedestrian mean motion speed and evacuation time, then analyze the pedestrian movement law under different rolling states. The simulation results show that compared to static tilting, ship rolling further leads to pedestrian movement speed attenuation and evacuation process delay. As the rolling amplitude increases, the pedestrian speed constantly decreasing. After the rolling amplitude exceeds 15 °, the evacuation time rapidly increases. Increasing the rolling period of a ship has a positive impact on the evacuation process, which can effectively improve personnel walking speed and reduce evacuation time, but the degree of impact is still related to the rolling amplitude. Under the same rolling amplitude, when the rolling period reaches 10 s or more, the evacuation efficiency can be significantly improved. The results can provide theoretical basis and technical support for designers to improve ship safety and managers to make evacuation-decisions.

Cite this article

WANG Yihang, LIU Zhengjiang, FANG Siming, WANG Xinjian, ZHANG Xinyu . Numerical analysis of personnel evacuation speed in ship rolling state[J]. Journal of Dalian Maritime University, 2023 , 49(3) : 45 -50 . DOI: 10.16411/j.cnki.issn1006-7736.2023.03.005

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