%0 Journal Article
%T 壳体类零件CAD模型重用方法研究<br>Research on Reuse Method of CAD Model for Shell Parts
%A 范秋霞
%A 杨兆建
%J 机械科学与技术
%D 2015
%X 为解决机械壳体类零件CAD模型重用问题，分析此类零件模型的几何形状及结构关系特点，提出面向CAD模型重用的机械壳体类零件LOD模型构造方法。该方法通过面向凸边的广度优化搜索算法识别切割环，将模型分解成多个面壳，构造1EE或2EE面填充收缩分割环将面壳封闭为实体，将分解结果存储在构造实体几何树中，对树进行节点删除和简化，生成LOD模型。对采煤机部分零部件进行模型分解试验和LOD模型生成试验，表明该方法具有较高计算效率，验证了该方法能较好保持模型的结构特征。<br>In order to solve the CAD model reuse problem of machinery shell parts, in this paper, a analysis on geometry and structure characteristic of shell parts is made, and a method of constructing level of detail of machinery shell parts oriented to CAD model reuse is put forward. Firstly, we recognize the cutting loops of model in mixed areas model according to the BFS of oriented to collar. Secondly, the model is decomposed into multiple face shells along edges in the cutting loops, and finally through the construction of a 1EE or 2EE surface filling, the face shells are transformed into solids with shrinking the cutting loops and the decomposition results were stored as nodes in a CSG tree. After node simplification and deletion, the CSG tree was generated into LOD model. The experimental results which contain decomposition and the LOD model generating verify the effectiveness and correctness
%K 模型重用
%K CAD
%K 分解
%K LOD模型
%K 壳体类零件&lt
%K br&gt
%K algorithms
%K computer aided design
%K decomposition
%K efficiency
%K geometry
%K LOD model
%K model reuse
%K shell parts
%U http://journals.nwpu.edu.cn/jxkxyjs/CN/abstract/abstract6151.shtml