基于图论与智能优化方法的水面舰船外板曲面几何展开研究

Research on Geometric Expansion of Shell Plate of Surface Ship Based on Graph Theory and Intelligent Optimization Method

为寻求一种快速且精确的计算机自动展开方法替代传统手工放样,减小展开面积误差、节省板材与提高工作效率,以水面舰船标准模型DTMB5415为例,应用图论原理使该船的外板曲面展开为若干便于加工制造的板块,并将板块数与面积误差作为双目标,基于智能优化方法求得网格数的Pareto最优解集,得到既能精确展开又便于生产加工的外板展开结果,为船体外板曲面自动展开提供新思路。

For reducing area errors of the ship hull lofting, saving planks and improving the work efficiency,seeking a fast and accurate computer automatic unfolding method to replace the traditional manual ship hull lofting, taking the standard model of surface warship DTMB 5415 as an example, the thesis applys the graph principle to unfold the hull plate surface of the ship into a number of plates that are easy to process and manufacture, and to make the number and area errors of the plates as the dual objectives. Basing on the intelligent optimization method, the Pareto optimal set of the number of meshes can obtain the hull plate unfolding result that can be precisely unfolded and be convenient for production and processing. This method provides a new idea for the automatic unfolding of the hull plate surface.