基于空间点云数据的异质材料零件动态建模方法

中国机械工程 ›› 2012, Vol. 23 ›› Issue (20): 2453-2458.

基于空间点云数据的异质材料零件动态建模方法

杨继全1;朱玉芳1,2;李静波1;施建平1

1.南京师范大学,南京,210042
2.南京理工大学,南京,210094

出版日期:2012-10-25 发布日期:2012-11-01
基金资助:
国家自然科学基金资助项目（61273243);江苏省高技术研究项目(BG2006042);江苏省高校自然科学基金资助项目(09KJD460004）
National Natural Science Foundation of China（No. 61273243）;
Jiangsu Provincial Natural Science Foundation of Higher Education of China（No. 09KJD460004）

Point Cloud Based Dynamic Representation for Heterogeneous Objects

Yang Jiquan1;Zhu Yufang1,2;Li Jingbo1;Shi Jianping1

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1.Nanjing Normal University,Nanjing,210042
2.Nanjing University of Science and Technology,Nanjing,210094

Online:2012-10-25 Published:2012-11-01
Supported by:

National Natural Science Foundation of China（No. 61273243）;
Jiangsu Provincial Natural Science Foundation of Higher Education of China（No. 09KJD460004）

摘要/Abstract

摘要：

针对含有多种材料，且材料相呈非均质分布或异常分布的异质材料零件，提出一种基于空间点云数据集的异质材料零件动态建模方法。该方法采用了细化STL模型和空间微四面体重构的几何建模方法;通过引入描述各材料物理特征的材料分布特征值、各材料的体分量和材料分布向量，对材料切片内的特征节点进行材料赋值，并对节点间的材料进行插值运算，层层遍历赋值，从而实现了对异质材料零件中任意点结构与材料信息的表述。在开发的异质材料零件成形系统上，通过实例测试了该建模方法的有效性和实用性。
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关键词: 异质材料零件, 动态建模, 点云数据, 特征节点

Abstract:

An approach of point cloud based dynamic representation for heterogeneous objects(HEO) was proposed to describe those HEO,whose materials distribution was ununiformed or irregular.Mesh refined STL model and micro-tetrahedral cell were employed to rebuild HEO geometry.Meanwhile,distribution property,volume fraction and distribution vector were used to represent material features of HEO nodes within each material layer.HEO geometry and material composition representation can be defined after the above interrogation process was implemented layer by layer.The approach is effective and practicable through some numerical examples demonstrated based on developed HEO fabrication system. 

Key words: heterogeneous object(HEO), dynamic representation, point cloud, feature node

中图分类号:

杨继全1, 朱玉芳1, 2, 李静波1, 施建平1. 基于空间点云数据的异质材料零件动态建模方法[J]. 中国机械工程, 2012, 23(20): 2453-2458.

YANG Ji-Quan-1, SHU Yu-Fang-1, 2, LI Jing-Bei-1, SHI Jian-Beng-1. Point Cloud Based Dynamic Representation for Heterogeneous Objects[J]. China Mechanical Engineering, 2012, 23(20): 2453-2458.

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