Optimization Method Based On Combination Strategy Bridge Crane Structure

The coming into being of optimal design, application and future trend is expounded, further more shortcomings and lacks in overhead traveling crane structural optimization at present are analyzed in this paper. As strength, stiffness, stability, geometry, and so a lot of constraints involved in cranes optimization, resulting optimization variables feasible region is extremely complex, and often the optimal solution is on the border of feasible region. Therefore, the traditional methods have shortcomings in finding the optimal solution on optimizing the overall situation. These flaws and deficiencies in optimal design, making structural optimization of bridge crane cannot meet the increasing market demand. Therefore, there is an urgent need for a more stable and reliable optimization method for technological upgrading the design of traditional optimal design and model, so as to produce high-quality, low-cost, lightweight, attractive and reliable performance of the bridge crane, shorten product design cycles, reduce production costs and enhance the competitiveness and technological innovation capacity of enterprises.Optimization of the traditional method has some limitations, such as the need gradient information, convex planning, single-issue, and so on. In the field of practical applications, there is a variety of highly complex optimization problems. To solve such complex optimization problems with the traditional method is difficult, so people have been struggling to find efficient, more robust global optimization technology to deal with such issues for many years. Aiming at most of global search optimization arithmetic which has global search optimization ability,but can not ensure to get the global search optimization in multiple maximum function,a new kind of compound optimization strategy based on Complex Shape Method and Orthogonal Gridding Method is put forward in this paper. The strategy,combined with improved Complex Shape Method and Orthogonal Gridding Method organically,makes full use of the simple and local search stability of Complex Shape Method and the overall stability of Orthogonal Gridding Method for collaborative optimization. Because the new compound strategy has the optimization mechanism of strengthening their merit and reducing their defect, it can get better efficiency and excellent result.The Combined Optimization Strategy is realized based on Visual C++6.0, taking the lightest weight of the crane as the objective function, confirming five optimization variables, taking intensity, toughness, stability as restriction condition, confirming 40 restriction functions, establishing the overhead crane structural optimization math modal. Compared the result of using Combined Optimization Strategy with Complex Shape Method and Orthogonal Gridding Method respectively in overhead crane frame optimization, the Combined Optimization Strategy can reduce the manufacturing cost of overhead crane, raise the performance and economic efficiency of overhead crane and reduce energy and steel consumption. Providing the industry a modern design means, it can guide product design and development, and improve the crane design quality, speed and level of pricing and product competitiveness.