Research On Vibration And Maneuverability Of New Inland River Luxury Electric Propulsion Cruise Ship

As an important part of the inner river basin,the Yangtze River waters not only plays an important role in shipping,but also the scenery on both sides of the river is also developed as a tourism project.It is highly respected by tourists,and large-scale luxury tourist ships have emerged.Electric propulsion ships are widely used in inland vessels due to their light pollution and low noise characteristics,good maneuverability and environmental friendliness.In addition to good maneuverability,electric propulsion ships have relatively low vibration problems.In general,the main excitation of ships using electric propulsion devices is derived from propellers,which makes the goal of studying such ship vibration problems clear.This paper takes the inland river electric propulsion cruise ship type I ship and type II ship as the research object,and studies the maneuverability and vibration of the electric propulsion cruise ship.As an important part of the inner river basin,the Yangtze River waters not only plays an important role in shipping,but also the scenery on both sides of the river is also developed as a tourism project.It is highly respected by tourists,and large-scale luxury tourist ships have emerged.Electric propulsion ships are widely used in inland vessels due to their light pollution and low noise characteristics,good maneuverability and environmental friendliness.In addition to good maneuverability,electric propulsion ships have relatively low vibration problems.In general,the main excitation of ships using electric propulsion devices is derived from propellers,which makes the goal of studying such ship vibration problems clear.This paper takes the inland river electric propulsion cruise ship type I ship and type II ship as the research object,and studies the maneuverability and vibration of the electric propulsion cruise ship.The inland river electric propulsion cruise ship type I adopts the form of “rudder and plunge”,and its tail shape is square.It has superior slewing performance in narrow curved section and dock,because the ship's rotation and linear stability are the same.The relationship,so the ship's linear stability is relatively poor.The inland waterway is complicated,and there are many jets in the jet stream.Although its good turning performance greatly improves the efficiency of the ship passing through this segment,when the water velocity in this segment is urgent and the ship is sailing against the water,the propeller follows the rudder to make the ship advance.The power loss,the propulsion efficiency is seriously degraded,and the ship is driving safely.The Inland River Electric Propulsion Cruise Ship II uses a conventional shafting to propel its tail shape to a threeball raft and a side-inclined propeller.Through research and analysis,it can be concluded that the Type II ship can avoid the lack of linear stability of the Type I ship and the lack of efficiency of the propeller.The inland river electric propulsion cruise ship type I and type II ships adopt electric propulsion mode,and the main excitation source comes from the propeller pulsating pressure and the main engine.Both host excitation and propeller excitation are controllable variables that can be artificially intervened.Selecting the appropriate propeller and main engine,and appropriate damping measures can control the factors that cause the ship to vibrate at the source.In this paper,the finite element method is used to study the total vibration characteristics of the hull.The three-dimensional model of the whole ship is built and the total vibration response is calculated and analyzed.For the local vibration of the ship,the vibration response of the tail and superstructure areas of each deck and the forced vibration response of the typical position under the excitation of the propeller are analyzed by a three-dimensional model.The results of the finite element method for the inland river electric propulsion cruise ship type I ship were further verified by the actual ship vibration test.According to the analysis of the vibration characteristics of the inland river electric propulsion cruise ship type I and type II ship,it can be seen that the tail line type adopts the three-ball type,the large side inclined propeller,and the deck partial structure enhanced inland river electric propulsion cruise ship type II Its vibration characteristics are superior to those of the Inland River Electric Propulsion Cruise Ship Type I and meet the ship vibration evaluation standards.Through the research on the inland river power propulsion cruise ship maneuverability and ship vibration characteristics,the purpose of this project is to confirm the practical application value of the above project,and further promote the research and development of the new ship type of the Yangtze River luxury tourist ship.