基于最小阻力的船型优化设计课件.docxVIP

基于最小阻力的船型优化设计摘要 一直以来，在船舶给定的基本条件下，如何设计出最小阻力的船型，是船舶设计者们追寻的奋斗目标。以前为了达到这一目标，设计者们利用的设计方法主要是采取模拟实验的方法，把几个船型方案进行比较，然后选出一个阻力最小的方案出来。但是，这种的选择方法消耗成本比较大，而且还具有一定的局限性。因此，本文试图采用理论计算方法，来探讨最小阻力船型的优化设计方法。就目前而言，探究船型优化的角度大多是从从兴波阻力角度出发，也大多通过这些可行性方法采用非线性规划法中的SUMT法和二次规划法等得到了很好的证实。本文利用LINGO软件结合所学知识采用非线性规划法中的顺序线性规划法来筛选出最小船型的设计方案。根据从以上的方法去实施，本文先对Wigley船型和S-60船型的首部、全船的船体型值进行了优化分析，然后，利用修改船型函数对Wigley船型和S-60船型首部进行了优化分析。最后将上述的探讨结果与SUMT法优化计算结果作比较，结果表明此类方法能够是实现预期的目标要求，具有很好的可行性。结果表明本文提出的优化方法是可行的，达到了预期的目的。本文提出的优化方法算法借助于LINGO软件来实现，优化结果表明运用LINGO软件做船型优化是可行的，节省了人为编制算法的时间，提高了工作效率，为以后的船型优化研究提供了一种研究方法。关键词:最小阻力；非线性规划法；顺序线性规划；船型优化AbstractAll along, the ship given basic conditions, how to design the least resistance ship, ship designers to pursue the goal. In order to achieve this goal before, designers design approach is to take advantage of the main method of simulation experiments to compare the number of ship type, and then choose a path of least resistance out of the program. However, this selection method consumption cost is relatively large, but also has some limitations. Therefore, this paper attempts to use theoretical methods to investigate the optimization of ship design method of least resistance.??For now, exploring ship optimization is mostly from the angle from the angle of wave resistance, nonlinear programming method of SUMT law and quadratic programming method has been well confirmed by the feasibility of these methods they use. In this paper LINGO software combines the knowledge nonlinear programming linear programming in order to filter out the smallest ship design.????According to the above method to implement this article prior to Wigley ship and S-60 ships first section, the ships hull value were optimized, and then, with modification ship function header Wigley hull and S-60 hull has been optimized analysis. Finally, the above results and discussion SUMT Optimization calculation results are compared, the results show that such an approach can achieve the intended objectives and requ