基于3DEXPERIENCE平台的CATIA二次开发下的拱坝结构快速建模

拱坝的曲线曲面众多，结构复杂，建模过程繁琐且耗时耗力。为便于快速构建拱坝模型，提高建模效率，减少建模过程中的重复工作，提出了一种基于CATIA二次开发的拱坝三维建模方法。该方法依托于3DEXPERIENCE平台，运用面向对象的Python语言，利用Python代码简洁易懂的特点，通过自动化接口连接CATIA模块，对CATIA模块进行二次开发。编写的二次开发程序可读取给定的EXCEL文件中的拱坝模型参数，自动生成草图，继而构建实体，实现批量构建三维形状的功能。这种快速建模方式不仅提高了工作效率，3DEXPERIENCE平台还具有多阶段建模、叠加模型、关联模型的技术特点，为实现三维环境下的模型并行协同设计提供了基础。

Rapid modeling of arch dam structure under CATIA secondary development based on 3DEXPERIENCE platform

An arch dam consists of various curves and surfaces and the structure is complex. It is tedious and time-consuming to model it. In order to facilitate the rapid construction of the arch dam model, improve the modeling efficiency and reduce the duplication of effort in the modeling process, a new method is proposed for constructing the arch dam efficiently and quickly, which is based on CATIA secondary development of arch dam. Based on 3DEXPERIENCE platform, this method applies the object-oriented Python language to connect the CATIA module through the automated interface, and to conduct secondary development for the CATIA module, which takes advantage of the simplicity of Python code. The secondary development program can access the given EXCEL file to get the parameters of the arch dam, automatically create sketches, and then construct solid models to realize the function of building 3D shape in batch. It can reduce the trouble caused by the repetitive work of manual inputting parameters. Meanwhile, the work efficiency can also be improved. For this reason, there is great value of promotion for all. In addition, the 3DEXPERIENCE platform also has the technical characteristics of multi-stage modeling, superposition modeling and correlation modeling, which provides the basis for the realization of parallel collaborative design of models in the three-dimensional environment.