Abstract: A three-dimensional (3D) parametric modeling method is proposed for structural design, combining a design logic-based modeling approach with a parametric modeling approach. By utilizing the linking mechanism of CATIA V6 software, the structural design hierarchy and 3D modeling hierarchy are unified, reflecting design relationships through model associations among 3D features to form a layer-driven 3D model. The user-defined feature-based parametric method addresses the stability limitations of traditional modeling methods while enabling batch control of design objects through parametric tools, significantly improving design efficiency. Furthermore, this method has been applied to the structural design and preliminary design calculations for a ship’s cargo hold, with results being validated. The presented method can provide references for the 3D structural design of other ship types.

Key words: 3D structural design, CATIA V6, user-defined features, parametric model

摘要： 该文提出了1种面向结构设计的三维参数化模型构造方法,融合了基于设计逻辑的建模理念和参数化建模技术。依托CATIA V6软件的链接机制,文中将结构设计层次和三维建模层次统一,通过三维特征之间的模型关系反映设计关系,构建层级驱动的三维模型;基于自定义特征的参数化,既能解决传统方法模型稳定性不足的问题,又能借助参数化工具对设计对象进行批量控制,从而显著提高设计效率。该方法已应用于实船货舱结构设计与前期设计计算过程中,所得结果验证了其合理性。该方法可为其他船型结构三维设计提供参考。

关键词: 结构三维设计, CATIA V6, 自定义特征, 参数化模型