摘要
在总结相关建模方法的基础上,提出了一种新的功能梯度材料实体建模方法,即将离散堆积理论运用到形体建模中,同时采用“体积法”在CATIA里很方便地创建离散化的几何模型。功能梯度材料建模基于梯度源理论,选取三维空间中的几何特征作为梯度源和给定材料分布方程,确定实体材料分布信息。为了满足材料建模的需要,将已有的3种布尔运算扩充到6种。论文最后给出了设计实例。
A new approach is proposed for modeling heterogeneous objects made of functional gradient materials. The theory of discrete piling-up is applied to model the geometry of the object and an algorithm named ＂volume＂ is employed to build the discrete geometrical models in CATIA. The functional gradient material modeling is based on the theory of gradient sources, by which the geometrical features in three-dimensional space can be selected as a grading source and the composition function of a material can be obtained, thus the material composition information of the object can be determined. To meet the demands of material modeling, three existing Boolean operations are expanded to six. Two design cases by this approach are presented.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2006年第3期376-381,共6页
Journal of Jilin University:Engineering and Technology Edition
基金
航空科学基金资助项目(04H51079)
关键词
计算机应用
功能梯度材料
实体建模
离散堆积
梯度源
布尔运算
computer application
functional gradient materials
solid modeling
discrete pileup
grading source
Boolean operators
