Whole Hull's Structural Strength Analysis Of Offshore Wind Turbine Installation Vessel

Wind power is the world's fastest-growing green energy technology, and also the focus of China's energy development strategy. Gaining the advantages of abundant resources, high wind speed, stability of wind direction, not occupation of land resources, less environmental impact, etc., and the offshore wind farms being very close to the coastal industrial cities which need to consume a lot of energy, offshore wind energy is a green energy which has conditions to start large-scale industrial development. And it is the first time European countries have built a large-scale offshore wind farm.Installation of wind turbine is an important part in offshore wind farm construction. How to build a working platform to complete lifting operations of offshore wind turbine efficiently and safely in the marine environment is an important issue to all countries among construction of offshore wind farms. Self-propelled and self-lifting vessel of offshore wind turbine is the third generation of lifting platform in offshore wind farm's construction which enjoys combined functions of self-propelled, self-rise, transportation, lifting and so on, high efficiency, high overall efficiency and it will be main equipment in offshore wind farm construction.The new ship has a self-elevating leg, a lifting device, a large crane of the weight and a larger deck loads, L/D and B/D have been beyond the current regulatory requirements. Currently there is no special specification that can be used to directly guide the ship's design. Therefore, it is of great necessity to do the finite element analysis of the whole ship .I began my paper with research in national and international development of offshore wind farm, the evolution of technology of offshore wind turbine installation and the development of offshore wind turbine lifting ships and methods of transport of lifting. I have made use of UG software to animatedly simulate the two ways fan ships lift. What's more,I have done the finite element analysis of structural specifications of design of the whole ship on the basis of the ship design.The body of this ship being structured by standard design specifications of CCS, I completed the establishment of finite element model, determined ten calculations after analyzing different operating conditions of transportation and installation, analyzed and calculated kinds of loads, got stress distribution, deformation and stress capacity when sufferring a variety of loads.On this basis, I assessed the strength of ship structure, improved high stress areas and reduced the maximum stress value of the whole ship. Some of my conclusions can help the design of the ship as well as future domestic follow-up study of the ship.