摘要
在熔模铸造的模拟过程中,型壳网格的质量对于模拟金属模型的成形形状、成形性能、内部缺陷等都有很大影响。近来比较引人注目的网格划分算法当属Labelle and Shewchuk的等值面填充算法。本文基于改进的等值面填充算法,替换填充包围盒的晶格和采用特征匹配技术来提高单元网格质量,从而可以快速高效地划分出任意复杂模型的型壳,这对于保证和提高熔模铸造充型凝固模拟的准确度具有重要意义。
During the simulation of investment casting, the quality of the shell mold mesh has a great influence on the shape, formability, internal defects of the process of metal forming simulation. Recently, the most compelling meshing algorithm comes from Labelle and Shewchuk＇s Isosurface filling algorithm. The paper is based on an improved isosurface stuffing algorithm, to replace the stuffing lattice and use feature matching technology to improve the quality of shell mold so that we can divide high quality shell mold of any form of complex model rapidly and efficiently, which is of great significance to ensure and improve the accuracy of the filling solidification simulation.
出处
《铸造》
CAS
CSCD
北大核心
2016年第11期1071-1074,共4页
Foundry
基金
教育部新世纪优秀人才支持计划(NCET-13-0229)
国家数控重大专项(2012ZX04010-031)
关键词
等值面填充算法
型壳
熔模铸造
有限元
网格划分
isosurface stuffing algorithm
shell mold
investment casting
the finite element
meshing
