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Recent developments of InteCAST software and its applications on special castings 被引量:5
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作者 Jianxin ZHOU Ruixiang LIU +1 位作者 Liliang CHEN dunming liao 《China Foundry》 SCIE CAS 2005年第3期188-193,共6页
with the development of computer technology, foundry CAE technology has made rapid progress. Commercialsoftware packages of casting process simulation, therefore, have become more and more practical. This paper introd... with the development of computer technology, foundry CAE technology has made rapid progress. Commercialsoftware packages of casting process simulation, therefore, have become more and more practical. This paper introducesboth the recent developments and some applications of InteCAST software, a commercial numerical simulation softwarepackage for foundry industry, with more than 120 customers all over the world. The function modules of lnteCAST8.0 andsome new techniques, such as uneven mesh technology for mold filling simulation and numerical mouse technology fordata visualization, were introduced. Several applications on special castings such as investment casting, low pressure diecasting, and high pressure die casting, were given. These applications showed that the software can help engineers tooptimize casting process by forecasting casting defect. 展开更多
关键词 FOUNDRY CAE technology SPECIAL CASTING CASTING defect INTECAST software
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基于XFEM与自适应网格的非均质材料裂纹扩展模拟 被引量:3
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作者 滕子浩 廖敦明 +2 位作者 吴圣川 章志兵 陈涛 《固体力学学报》 CAS CSCD 北大核心 2019年第3期238-247,共10页
针对含有间断的非均匀材料的断裂问题,论文将虚节点多边形单元(virtual node polygonal element,VP)的形函数引入到扩展有限元(extended finite element method,XFEM)中,提出了一种基于四叉树结构的动态网格细化方法,该方法可对间断面... 针对含有间断的非均匀材料的断裂问题,论文将虚节点多边形单元(virtual node polygonal element,VP)的形函数引入到扩展有限元(extended finite element method,XFEM)中,提出了一种基于四叉树结构的动态网格细化方法,该方法可对间断面附近单元实现可调控的多层级细化,特别是对于裂纹扩展问题,可实现裂尖附近单元的动态网格细化与粗化.基于以上网格细化方法,论文将之前论文中提出的VP-XFEM进行扩展,以研究非均质材料中的裂纹扩展问题.为验证算法的准确性与计算效率,针对含有孔洞及材料界面的断裂问题,论文给出了相应的算例.结果显示,与传统的XFEM相比,该方法能够获得更好的精度、收敛性以及计算效率. 展开更多
关键词 非均匀材料 裂纹扩展 自适应网格细化 多边形单元 扩展有限元
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