期刊文献+

一种改进的无单元伽辽金方法 被引量:2

An Improved Element Free Galerkin Method
下载PDF
导出
摘要 使用单位分解积分,对传统的无单元伽辽金方法进行改进.有限覆盖和单位分解是单位分解积分的数学基础,对单位分解积分进行了严格证明,并指出使用Shepard函数作为单位分解函数是一个很好的选择.数值实例表明,使用单位分解积分进行数值求积的无单元伽辽金方法是一种真正的无网格方法,与经典的背景网格积分相比具有更高的精度. The element-free Galerkin method (EFGM) is improved with partition of unity quadrature (PUQ). Partition of unity quadrature is shown strictly with finite covering and partition of unity. Using Shepard functions as partition of unity functions, we obtain good results. The EFGM with PUQ is a true meshless method. Computational results of EFGM with partition of unity quadrature are more accurate than those of the traditional EFGM with background quadrature.
出处 《计算物理》 CSCD 北大核心 2007年第1期35-41,共7页 Chinese Journal of Computational Physics
基金 国家自然科学基金(10102020) 国家973项目(G1999032805)资助项目
关键词 无网格方法 无单元伽辽金方法 数值积分 有限覆盖 单位分解 单位分解积分 meshless method element free Galerkin method numerical quadrature finite covering partition of unity partition of unityquadrature
  • 相关文献

参考文献15

  • 1Nayroles B, Touzot G, Villon P. Generalizing the finite element method: diffuse approximation and diffuse elements [ J ].Computational Mechanics, 1992, 10 : 307 - 318.
  • 2Belytschko T, Lu Y Y, Gu L. Element-free Galerkin methods[ J]. International Journal for Numerical Methods in Engineering, 1994,37 : 229 - 256.
  • 3Lu Y Y, Belytschko T, Gu L. A new implementation of the element free Galerkin method [ J ].Computer Methods in Applied Mechanics'and Engineering, 1994, 113 : 397 - 414.
  • 4Belytschko T, Krongauz Y, Organ D, Fleming M, Krysl P. Meshless methods: An overview and recent developments[J]. Computer Methods in Applied Mechanics and Engineering, 1996, 139: 3- 47.
  • 5Dolbow J, Belytschko T. An introduction to programming the meshless element free Galerkin method [ J ]. Archives of Computational Methods in Engineering, 1998, 5(3) : 207 - 241.
  • 6曾清红,卢德唐,齐岩,蒋远林.无网格方法求解稳定渗流问题[J].计算力学学报,2003,20(4):440-445. 被引量:21
  • 7Beissel S, Belytsehko T. Nodal integration of the element-free Galerkin method[J]. Computer Methods in Applied Mechanics and Engineering, 1996, 139: 49- 74.
  • 8Chen J S, Wu C T, Yoon S, You Y. A stabilized conforming nodal integration for Galerkin mesh-free methods[J]. International Journal for Numerical Methods in Engineering, 2001, 50:435 - 466.
  • 9Dolbow J. Numerical integration in meshfree methods[D]. Master's thesis, Northwestern University, 1998.
  • 10Dolbow J, Belytschko T. Numerical integration of the Galerkin weak form in meshfree methods[J]. Computational Mechanics, 1999,2,3 : 219 - 230.

二级参考文献12

  • 1刘欣.无网格数值方法研究[M].南京:南京航空航天大学,1998..
  • 2Lucy L B. A numerical approach to the testing of the fission hypothesis [J]. The Astron J, 1977, 12 (8) :1013-1024.
  • 3Nayroles B Touzot G, Villon P. Generalizing the finite element method: diffuse approximation and diffuse elements [J]. Comput Mech, 1992, 10: 307-318.
  • 4Belytschko T, Lu Y Y, Gu L. Element-free Galerkin methods [J]. J Numer Methods and Engrg,1994,37:229-256.
  • 5Lu Y Y, Belytschko T, Gu L. A new implementation of the element free Galerkin method[J]. Comput Methods Appl Mech Engrg, 1994,113:397-414.
  • 6Belytschko T, Krongauz Y, Organ D, et al. Meshless methods: an overview and recent developments[J]. Comput Methods Appl Mech Engrg, 1996,139:3-47.
  • 7刘欣,学位论文,1998年
  • 8Liu W K,Int J Numer Method Eng,1995年,1655页
  • 9Liu W K,Int J Numer Method Fluids,1995年,21期,901页
  • 10石根华,Working forum Manifold method Material analysis,1995年,1页

共引文献37

同被引文献20

引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部