Study on the influence of ship collision upon propulsion shafting

• Published in: Mechanics & industry : an international journal on mechanical sciences and engineering applications Vol. 20; no. 6; pp. 613 - 622
• Main Authors: Dong, Liang-Xiong, Niu, Yu-Sheng, Wen, Xiao-Fei
• Format: Journal Article
• Language: English
• Published: Villeurbanne EDP Sciences 2019
• Subjects: amplitude; CAD; Collision; Collision dynamics; Computer aided design; Computer simulation; dynamic stiffness; Finite element method; Laplace transforms; Load; Mathematical models; Partial differential equations; propulsion shafting; Stiffness
• ISSN: 2257-7777; 2257-7750
• DOI: 10.1051/meca/2019050

In this study, a mathematical model of a struck ship based on the dynamic stiffness of the hull was developed; a comparison of the impact of collision in the models of dynamic stiffness and static stiffness, showed that the vibration amplitude in the dynamic stiffness was larger than that in the static stiffness in the stress accumulation stage. A simulation of shafting in colliding ships was performed based on a finite-element model using the ANSYS software, and the numerical simulation values and theoretical values were observed to be similar. To analyze the influence of ship collision on propulsion shafting, a test rig on ship collision based on dynamic stiffness was designed, and the experimental values agreed well with the numerical simulation values. From a practical perspective, this study could generate a map similar to an operating guide.