Analysis of Nonlinear Dynamic Characteristics of Ship-bridge Collision under Multiple Factors

Yuxi Yan ； Anzhi Yan

《International Core Journal of Engineering》 9卷1期 (2023/01) Pp. 52-62

https://doi.org/10.6919/ICJE.202301_9(1).0008

摘要

In order to study the dynamic characteristics and influencing factors of ship bridge collision, the finite element software ANSYS/LS‐DYNA was used to carry out the numerical simulation of ship bridge collision. The influence of ship mass, ship speed and bridge tower reinforcement ratio on collision dynamic characteristics such as impact force, ship impact depth, bridge tower displacement and effective stress in impacted area of bridge tower were studied. The results show that the time history curve of the impact force presents obvious nonlinear and fluctuating characteristics, and the effective stress and displacement in the center of the impacted area of bridge tower are large. Collision dynamic characteristics such as impact force, ship impact depth, bridge tower displacement and effective stress in impacted area of bridge tower are positively correlated with ship speed and ship mass. The impact force increases slightly with the increase of the reinforcement ratio of the bridge tower, and the bridge tower displacement is negatively correlated with the bridge tower reinforcement ratio.

關鍵字

Ship‐bridge Collision ； Collision Dynamic Characteristic ； Influence Factor ； The Numerical Simulation

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