The invention discloses a ship form optimization method based on a kernel function, and relates to the field of ship design, and the method comprises the steps: analyzing ship form parameters of a mother ship to obtain a mother ship point cloud matrix, and then carrying out the refitting of the mother ship point cloud matrix based on an NURBS curved surface to obtain a plurality of control points; then eigenvalue decomposition is carried out on a matrix formed by target control points used for controlling a to-be-optimized molded line range indicated by the ship type optimization demand to deform on the basis of a feature basis function of a kernel function to obtain a modal decomposition coefficient set, and a decomposition coefficient is adjusted in a dimension reduction space to pull a curved surface to change so as to carry out modification design; therefore, ship type parameters after ship type optimization can be obtained. According to the method, the three-direction fairness of the molded line is ensured on the basis of quickly realizing the remodeling design, and the ship type optimization efficiency is improved.
本申请公开了一种基于核函数的船型优化方法,涉及船舶设计领域,该方法解析母型船的船型参数得到母船点云矩阵后,基于NURBS曲面对母船点云矩阵进行重拟合得到若干个控制点,然后对用于控制船型优化需求指示的待优化型线范围进行变形的目标控制点所构成的矩阵基于核函数的特征基函数进行特征值分解得到模态分解系数集合,在降维空间内调整分解系数牵引曲面变化以进行改型设计,即可以得到完成船型优化后的船型参数。该方法在快速实现改型设计的基础上保证了型线的三向光顺性,提高了船型优化的效率。
Kernel function-based ship form optimization method
一种基于核函数的船型优化方法
2024-05-28
Patent
Electronic Resource
Chinese
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