Numerical Analysis Of Hydrodynamic Characteristics And Mooring Intensity Of Marine Arresting Warning System

When the ship is sailing on sea or entering or leaving the port,due to the increase of the tonnage and speed of the ship,the ship may hit the offshore buildings,bridge pier and piers due to mechanical failure or improper operation,causing serious maritime traffic accidents.In addition,warning and protection of the maritime military base is also increasingly important.Therefore,the hydrodynamic characteristics and mooring intensity of the maritime arresting warning system is a problem worthy of study,which can provide a basis for the safe use of the maritime arresting warning system.In order to accurately study the hydrodynamic characteristics and mooring intensity of the maritime arresting warning system,this paper selects the WORKBENCH floating body analysis platform,and uses the marine engineering floating body analysis software AQWA to calculate the hydrodynamic characteristics and mooring force of the mooring multi-floating coupling system,and verifies the correctness of the fully coupled time domain analysis method.The hydrodynamic model of the local maritime arresting warning system was established.The hydrodynamic analysis,numerical simulation of motion and dynamic response under different sea conditions were carried out,and the advantages and disadvantages of the maritime arresting warning system were analyzed.The environmental load received by the floating body is then applied to the entire maritime arresting warning system,which increases the calculation accuracy and studies the mooring intensity of the maritime arresting warning system.The main work of this paper will start from the following aspects:First,the hydrodynamic model was established by the WORKBENCH floating body analysis software.The fully coupled time domain analysis method is used to analyze the hydrodynamic analysis of the buoy chain mooring multi-body coupled system,the numerical simulation of the motion and dynamic response under different sea conditions,and the anti-collision performance analysis.Comparative analysis was performed with existing physical model tests.Second,the deviation of the numerical simulation results and the physical model test results are analyzed.The correctness of the fully coupled time domain analysis method is verified to analyze the hydrodynamic and anti-collision performance problems of the mooring multi-body coupled system.Third,the hydrodynamic model of the local maritime arresting warning system was established.The hydrodynamic analysis and numerical simulation of motion and dynamic response under different sea conditions were carried out by using the fully coupled time domain analysis method.The maritime arresting warning system and the traditional anti-collision system were comparative analyzed.The motion response and dynamic response were compared under the two conditions of pure wave and wave current,and analyzes the advantages and disadvantages of the maritime arresting warning system.Finally,the environmental load of the floating body was obtained by WORKBENCH floating body analysis software.The environmental load was applied to the entire maritime arresting warning system in ANSYS software to analyze the mooring intensity,and the motion response and dynamic response of the maritime arresting warning system consisting of cylindrical and ellipsoidal floating bodies was simulated when the floating body drifted 12 m under the five-level and eight-level sea conditions.The maritime arresting warning system with cylindrical and ellipsoidal structures meets the intensity requirements,but the safety factor of the maritime arresting warning system composed of ellipsoidal floating bodies is higher than the maritime arresting warning system composed of cylindrical floating bodies.