Structure Optimization Design Method Based On Ant Colony Algorithm For Bulk Carriers Of Yangtze River

Yangtze River as China's largest river, its shipping is an important external transport along the channel region, along the 80% required for large-scale production of iron ore,83% of the coal and a significant share of the oil rely on the Maritime of Yangtze River. Since the second half of 2008, the financial crisis has seriously affected the shipping of Yangtze River, but the economy along the Yangtze River since 2009 show pick up signs and heating up, the shipping market in general is stabilized. Bulk carrier of Yangtze River is still a great demand. With the development of shipping industry, computational theory and calculation means updates, ship structural design theory and methods are constantly updating and development. Ship is a complex spatial structure. The center of ship hull structure is the most important structure, represents about 70% of the weight of the hull structure; it is most representative of the final structure of the ship's weight and cost. Therefore the rational design of the ship in profile is always the most important issue of structural designers. Seek to meet the various constraints under the weight of the lightest or the cost structure of most provinces in the profile of optimal design of ships has important practical significance.In this paper, with the consideration of bulk carrier of Yangtze River in the structural characteristics, the Yangtze River section structure of bulk carriers in the minimum weight as the optimization target, determine the impact of the weight of the design variables. In the optimization, the use of the function of the improved ant colony algorithm can get the emerging global optimal solution. The method of search capability and high accuracy and easy to implement by computer program, easy to transplant, has broad applicability and good prospects for development. Programming for instance by improved ant colony algorithm with MATLAB programming language, use of the program examples in this article show that the ant colony algorithm to calculate the ship's structure can be applied to optimize the design, and can achieve good optimization results.