异质零件的静态建模方法

Static modeling of heterogeneous object

与传统CAD建模不同,异质零件建模时将材料的类型和分布特征作为参数,在模型中进行优化设计。异质零件建模的核心是将几何结构与材料设计结合起来,实现单一材料无法实现的特殊功能。异质零件模型的设计还需要考虑制造需求,与传统模型兼容,使用标准文件格式,最终静态模型可直接用于数字制造。给出了静态模型的设计过程,首先使用常见三维建模数据存储方式的点云数据来存储模型数据;然后设计基于轮廓近似法的结构和材料模型,用不同颜色映射不同材料;最后将材料信息添加到以微四面体为基本单元的模型中,生成异质零件的静态模型。

Different from typical CAD modeling,the modeling of heterogeneous objects(HEO)has material type and its distribution as the new design variables.The core of HEO modeling is to combine the geometric structure with the material design together realizing special function of the object that is not possible with a single material.Using standard file format and interface to 3D printing devices,the final static models can be directly used for digital manufacturing.The static model is given in steps:point cloud data storage:this is a common means of data storage for 3D modeling;structural models based on the voxel method and the contour approximation method;color visualization of static models for different materials;material information is added to the structural model to generate static models of HEO.