摘要
概念设计是指在初步设计阶段,由原始需求提出到初始方案生成的过程。针对船型设计在该阶段需求变动频繁、母型依赖性较强、多方案并发设计成本较高等问题,立足无近似母型场景,探索并提出了一种以船型为对象的条件生成对抗模型,且将阻力性能作为条件标签,生成满足性能指标需求的船型几何方案。首先,利用参数化建模方法构筑无附体船的轮廓特征曲线,筛选获取用以表征该船型的几何参数,并得到相匹配的三维网格。其次,依据积分理论从三维网格获取该船型的特征面面积及船型系数,利用所开发的性能预报平台自动化接口,构建几何参数与性能表征一致性数据集。最后,在传统生成对抗网络(GAN)基础上,通过多层感知机对以阻力为代表的条件特征进行编码,再与生成器隐藏层中的几何特征进行叠加,以引导学习不同阻力表现下的船型样本分布,并生成符合条件约束的船型几何参数。初步实现了不依托母型信息的、从典型总体性能出发的船型正向设计过程,为需求不确定情况下的概念方案快速生成与迭代优化提供了设计基础。
Conceptual design refers to the process from the proposal of original requirements to the generation of initial schemes during the preliminary design phase.In response to frequent changes in requirements for ship design at this stage,strong dependence on parent models,and the high cost of concurrent design of multiple schemes,a conditional generative adversarial model for hull forms was proposed for scenarios lacking approximate parent models.This model used resistance performance as the conditional label to generate hull-form geometric schemes that met the performance index requirements.Firstly,contour feature curves of the bare hull were constructed using parametric modeling methods;geometric parameters characterizing the hull form were selected,and corresponding three-dimensional meshes were obtained.Secondly,based on the integral theory,the characteristic surface areas and hull-form coefficients were obtained from the three-dimensional mesh,and a consistency dataset of geometric parameters and performance characteristics was constructed via the automated interface of the developed performance-prediction platform.Finally,based on a traditional generative adversarial network(GAN),a multilayer perceptron was employed to encode conditional features represented by resistance,which were then combined with geometric features in the hidden layers of the generator.This approach guided the learning of hull-form sample distributions under varying resistance conditions and generated hull-form geometric parameters that satisfied the specified constraints.The initial realization of a forward-design process for hull forms without reliance on parent-model information and based on overall performance of typical types provided a design basis for the rapid generation and iterative optimization of conceptual schemes under uncertain requirements.
作者
刘德丰
陈伟政
白亚强
刘凯
王琦
LIU Defeng;CHEN Weizheng;BAI Yaqiang;LIU Kai;WANG Qi(China Ship Scientific Research Center,Wuxi Jiangsu 214082,China;Taihu Laboratory of Deepsea Technological Science,Wuxi Jiangsu 214082,China)
出处
《图学学报》
北大核心
2025年第6期1209-1215,共7页
Journal of Graphics
关键词
船舶设计
概念设计
船型方案
正向设计
智能生成
条件生成模型
生成对抗网络
ship design
conceptual design
hull design concept
forward design
intelligent generation
conditional generation model
generative adversarial networks
