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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 国家重点研发计划首席
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：力学与航空航天学院
学科：车辆工程. 计算力学
办公地点：综合实验2号楼421A
联系方式：xuefeng@dlut.edu.cn
电子邮箱：xuefeng@dlut.edu.cn
论文成果
当前位置: 祝雪峰-大连理工大学 >> 科学研究 >> 论文成果Extended Isogeometric Analysis with strong imposing essential boundary conditions for weak discontinuous problems using B plus plus splines
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论文类型：期刊论文
发表时间：2021-01-10
发表刊物：COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
卷号：370
ISSN号：0045-7825
关键字：eXtended Isogeometric Analysis; B plus plus splines; Bi-material weak discontinuous problems; Dirichlet boundary condition; Computational resources
摘要：Strong imposing Dirichlet boundary conditions remain a challenge for eXtended Isogeometric Analysis (XIGA) or eXtended Finite Element Methods (XFEM). This paper proposed a novel XIGA method of using B++ splines (Boundary plus plus splines) for bi-material weak discontinuous problems. Because B++ spline basis functions satisfy the Kronecker delta property, the presented method allows strong imposing Dirichlet boundary conditions on the boundaries and bi-material interfaces. In addition, compared with other XIGA methods, the number of the basis functions and degrees of freedom (DOFs) are significantly reduced in the process of conversion, which save the computational resources. Numerical examples verify the efficiency and accuracy of the proposed method. (C) 2020 Elsevier B.V. All rights reserved.