段庆林
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二阶一致无网格与有限元耦合离散研究
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Indexed by:期刊论文

Date of Publication:2014-01-01

Journal:固体力学学报

Included Journals:Scopus、PKU、ISTIC、CSCD

Volume:35

Issue:4

Page Number:325-333

ISSN No.:0254-7805

Key Words:无网格; 连续掺混法; 一致性; 有限元

Abstract:为准确方便地施加本质边界条件,在连续掺混法(Continuous Blending
   Method,CBM)的框架下,通过增加一个边中节点,发展了采用二阶基底的无网格与二阶有限元的耦合离散方法.Galerkin弱形式的数值积分采用
   具二阶一致性的3点积分方法(Quadratically Consistent 3-point integration
   method,QC3).与原本在QC3中采用的Nitsche法相比,所发展的耦合离散方法可像有限元法一样简单高效地施加本质边界条件,不向弱形式中
   引入额外项,也不依赖于任何人工参数.而且,数值结果还表明,QC3的计算精度也得到进一步提高.

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Supervisor of Doctorate Candidates
Supervisor of Master's Candidates

Gender:Male

Alma Mater:大连理工大学

Degree:Doctoral Degree

School/Department:力学与航空航天学院

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