NURBS三参数实体造型及在模具CAD/CAM中的应用  

NURBS TRI PARAMETRIC SOLID MODELING ANDITS APPLICATION IN CAD/CAM OF DIES

作　　者：孙善忠[1] 刘晓强[1] 阮雪榆[1] 

机构地区：[1]上海交通大学塑性成形工程系国家模具CAD工程研究中心

出　　处：《软件学报》1997年第1期71-74,共4页Journal of Software

摘　　要：在大量ＣＡＤ／ＣＡＭ应用类问题中，不但需要描述实体的外形，也要求表达实体的内部信息．针对这个要求，本文提出了ＮＵＲＢＳ三参数实体造型方法和形体构筑技术．本文将此方法应用于模具ＣＡＤ／ＣＡＭ系统中，如有限元建模中的形体三维有限元网格生成及相应的应力分析。In many application problems of CAD/CAM, people not only need to describe the exterior of solids, but also want to know the information within the solids. In the light of this situation, this paper displays the method of NURBS tri parametric solid modeling and some construction techniques. Also the paper discusses some applicational problems in CAD/CAM of dies, such as 3 D finite element mesh generating and mass properties calculation, which are based on this method.

关 键 词：三参数实体造型 NURBS 有限元建模 CAD/CAM 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]