主尺度受限船舶性能及结构特性综合优化方法研究

Study on Synthetical Optimization Methods of Ship Dynamic Performance and Its Structure Characteristics

本文建立了主尺度受限船舶性能及结构特性综合优化的数学模型,基于并行算法、遗传算法和混沌算法思想,构造了一种基于敏感变量分段的并行遗传混沌复合算法,并将其应用于求解此类综合优化计算问题,编制了界面友好的VC++软件。对于主尺度受限船舶性能及结构特性综合优化问题,进行了遗传算法或混沌算法及其并行或复合算法的大量优化计算。结果表明:该复合算法不但能有效地克服遗传算法的早熟问题,而且计算可靠、效率高,为主尺度受限船舶设计方案的综合评估及其综合优良船型设计准备了前提条件。

In this paper, the integrate optimization mathematic model of ship dynamic performance and its structure characteristic is established. Composing parallel,GA and chaos algorithm, the parallel GA-Chaos algorithm is constructed, and it is applied to solve this kind of integrate optimization calculation problem. The software with friendly interface is programmed by vc＋＋. To the integrate optimization problems of ship dynamic performance and its structure characteristics, a large amount of optimization calculations of GA, chaos algorithm and the parallel or composite algorithm are carried on, which the objective function is single or multi. The calculation results show that： this algorithm not only can conquer the prematurity problem of GA, but also consume little calculation time and has higher efficiency. The integrate performance index of calculation results of ship dynamic performance and its structure characteristic is higher than the congener optimization calculation. And it can provide the basic condition to the integrate evaluation of ship design project and the ship form design.