非均质NURBS体参数化模型的AMF通用文件生成方法  

A Generation Method of AMF General Files for Heterogeneous NURBS Volume Parametric Model

作　　者：陈龙[1] 韩文瑜[1] 徐岗[2] Chen Long;Han Wenyu;Xu Gang(College of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Department of Computer Science,Hangzhou Dianzi University,Hangzhou 310018,China)

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]杭州电子科技大学计算机学院,浙江杭州310018

出　　处：《系统仿真学报》2019年第10期2010-2018,共9页Journal of System Simulation

基　　金：国家自然科学基金(51475309,61472111);浙江省杰出青年自然科学基金(LR16F020003)

摘　　要：针对非均质NURBS (Heterogeneous Non-Uniform Rational B-spline,简称HNURBS)体参数化模型的三维打印技术,给出了三维打印通用AMF(Additive Manufacturing File Format)文件生成方法。用灰度值代表材料信息,通过含有灰度信息的控制点构建HNURBS体参数化模型,实现材料信息连续可视化表达;根据NURBS体参数模型细分方法得到等参线网格单元,对等参线网格单元进行三角网格划分和材料插值计算,得到用于AMF文件生成所需的三角形网格单元。结果表明,输出的AMF格式文件可供三维打印软件AMFtools读取和显示。Aiming at the three-dimensional printing technology of heterogeneous NURBS(Heterogeneous Non-Uniform Rational B-spline, HNURBS) volume parametrization model, a method of generating the AMF(Additive Manufacturing File Format) of the three dimensional printing general file is proposed. For the continuous visual expression of material information, the HNURBS volume parametric model is constructed with the control points containing material information which is represented with gray value. According to the subdivision of the NURBS volume parametric model, the HNURBS volume parametric model is subdivided into Isoparametric mesh element. In order to get the triangular mesh for the generation of the AMF files, each plane of the element is divided into the triangular mesh and the material information is calculated with interpolation method. The results show that the output of AMF format is available for the three dimensional printing software AMFtools.

关 键 词：非均质产品 三维打印 HNURBS体参数化 AMF文件 

分 类 号：TH164[机械工程—机械制造及自动化] TP391.9[自动化与计算机技术—计算机应用技术]