小水面双体船结构优化分析

The structural analysis and optimum of the small water plane area twin hull ship

分析某型号小水线面双体船在2种航态下的结构强度问题,并在此基础上实现该船体结构的优化,以达到提高结构总体性能,减小结构重量并降低结构重心之目的。在研究中,根据CCS规范计算双体船结构的外载荷,并用有限元法进行结构强度分析。最后,通过集成多学科优化平台,以遗传算法为搜索策略,同时对2种航态下的船体结构进行优化。数值计算表明,优化结果具有可行性,可为现实设计提供参考。

The analyses the structural response of a small waterplane area twin hull ship（SWATH）in the paper,there structure optimized analysis is done in the end,which aimed to improve total performance;decrease structure mass and center of gravity weight.In this research,according to the guidelines of SWATH ship by CCS,the loading of a SWATH ship is discussed,the FEM is used to calculate the structural response of the SWATH ship.In the end,there structural optimized by integrating multidisciplinary design optimization platform,the genetic algorithm is proposed in the paper for the two kinds of loading case.Numerical results show that the optimization method is effective and feasible;it can give the reference for the ship design.