CAJ | 학술논문

以三次B样条曲面描述为基础，对体成形数值模拟中的复杂模具型腔、锻件三维网格自动划分、锻件与模具接触的状态进行了一体化研究。利用B样条曲面的直观性、局部性、通用性和造型灵活性，构造了复杂模具型腔及锻件边界，提出了三维网格样条生成法、改进的分块样条生成法及接触判断区域层次搜索技术。
이삼차B양조곡면묘술위기출，대체성형수치모의중적복잡모구형강、단건삼유망격자동화분、단건여모구접촉적상태진행료일체화연구。이용B양조곡면적직관성、국부성、통용성화조형령활성，구조료복잡모구형강급단건변계，제출료삼유망격양조생성법、개진적분괴양조생성법급접촉판단구역층차수색기술。
The 3-D tool surface description together with the automatic 3-D meshing methods and the contact search is carried out for the FEM numerical simulation of complicated massive forming based on the cubic B-spline. The complex geometry for die-cavity and forging surface is described; the spline technique for 3-D mesh generation as well as piecewise mesh generation is proposed and the region-section search algo rithm is done for the advantages of B-spline such as visualization, localization, generalization, flexibility and adaptation for graphic model.