| Based on the data statistics of offshore wind power projects,the development of offshore projects at home and abroad has shown a trend of far sea,deep water and large-scale development by 2020.At present,the overall performance of professional offshore wind power operation and maintenance vessels in China needs to be further improved to cope with the more complex sea conditions of wind farms in the future.In this paper,a carbon fiber dual-hull wind power operation ship is designed from the perspectives of light weight,high strength and high speed of the ship,and the structural performance of the ship is mainly studied.The main work and research contents of this thesis are as follows:(1)The preliminary design of a carbon fiber composite catamaran operation and maintenance ship is carried out.The relevant data of the catamaran wind power operation and maintenance ship and the theory of ship type and ship resistance are analyzed,and the main elements of the ship are determined according to the characteristics of carbon fiber composite materials.Referring to the characteristics of carbon fiber material,the preliminary design of the profile line and the general layout;The ship design software Maxsurf was used to build the hull model to carry out the preliminary estimation of its hydrostatic,stability and resistance performance.(2)Design the preparation process of carbon fiber composite components for the catamaran.According to the structural design size,three kinds of Marine stiffened beam specimens with different lay-up schemes are designed.Referring to the preparation method of glass fiber composite,the preparation method of hand-up technology was used to fabricate the reinforced beam of carbon fiber composite.The three-point bending mechanical tests of reinforced beams were carried out to analyze the damage mode and bearing capacity of the specimens under different lay-up schemes.(3)According to the failure mode of carbon fiber composites reinforced beams in the test,the appropriate failure criteria and stiffness degradation model were selected,and the finite element software ABAQUS was used to establish the carbon fiber composites reinforced beam model for numerical simulation.The results of numerical simulation were compared with the test to verify the accuracy of the finite element simulation method,analyze the failure process of the simulation model,and summarize the differences between the test and simulation.(4)According to the general layout design of the CFRP wind power ship,the structure design of the main hull is carried out,and the relevant specifications are selected to design and check the structural dimensions of the CFRP material,so as to obtain the dimension values of each component of the whole ship.The finite element model of the carbon fiber main hull was established in ABAQUS,and the lay-up mode of each component was preliminarily set.According to the specifications,the load and boundary constraints were applied to the whole ship under 7 working conditions,the structural strength of the hull under different working conditions was calculated,and the stress variation rule under each working condition was analyzed.According to the calculation results,the improvement scheme is designed and compared with the structural characteristics of the carbon fiber ship,and the structure improvement scheme suitable for the carbon fiber wind power ship is obtained.In this thesis,the preliminary design and structural performance analysis of the carbon fiber composite operation ship are carried out,and some methods and conclusions are summarized to provide reference for the design and construction of the carbon fiber operation ship. |
PDF Full Text Request