期刊文献+

三维无网格法中权函数影响半径的优化 被引量:3

Optimal Influence Radius of Weight Functions in Meshless Methods in Three Dimensions
下载PDF
导出
摘要 从函数逼近的角度建立三维无网格法中权函数影响半径的优化计算模型,针对一次基、二次基情形求解该模型.分析不同影响半径下函数的逼近误差,以及计算量、条件数等因素对无网格法计算性能的影响,结合数值试验,确认给出的权函数影响半径是有效、可靠、综合最优的. We establish a practical mathematical model to compute optimal influence radius of weight functions in three dimensions. It is solved with linear basis and quadratic basis. Effects of error estimates, computing time and condition numbers of weight function with different influence radius on computation performance are investigated. Numerical examples demonstrate relability, efficiency and optimality of the influence radius.
出处 《计算物理》 EI CSCD 北大核心 2008年第3期269-274,共6页 Chinese Journal of Computational Physics
基金 国家自然科学基金重大项目(90405016) 教育部新世纪优秀人才支持计划资助项目
关键词 无网格法 移动最小二乘(MLS) 权函数 影响半径 条件数 数值积分 meshless methods moving least squares weight function influence radius condition number numerical integration
  • 相关文献

参考文献5

二级参考文献21

  • 1何碧烟,欧光南,李旭敏,陈武军,张兴如.红毛菜多糖组成及结构的初步研究[J].食品科学,2006,27(11):210-214. 被引量:9
  • 2.GB1236-2000.工业通风机用标准化风道进行性能试验[S].,..
  • 3[1]Lucy L B. A numerical approach to the testing of the fission hypothesis [J]. The Astronomical Journal, 1977,82(12):1013-1024.
  • 4[2]Belytschko T, Krongauz Y, Fleming M, et al. Meshless method: an overview and recent development [J]. Computer Methods in Applied Mechanics, 1996, 139(1):347.
  • 5[3]Belytschko T, Lu Y Y, Gu L. Element free Galerkin methods [J]. International Journal for Numerical Methods in Engineering, 1994,37:229-256.
  • 6[4]Cingoski V, Miyamoto N, Yamashita H. Element-free Galerkin method for electromagnetic field computations [J]. IEEE Transactions on Magnetics, 1998,34(5):3226-3229.
  • 7[5]Viana S A,Mesquita R C.Moving least square reproducing kernel method for electromagnetic field computation[J]. IEEE Transactions on Magnetics,1999,35(3):1372-1375.
  • 8[6]Liu S Z, Yang Q X, Chen H Y, et al. Applying the element-free method to engineering electromagnetic field calculation [A]. In: Proceedings of the Fourth ICEF [C]. Tianjin, China, 2000. 185-189.
  • 9[8]Dolbow 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.
  • 10Cate Jones. How to obtain combustion air flow measuremeats accuracy [J]. Power. May 1994,138(5): 51-53.

共引文献76

同被引文献22

  • 1王奎武,陈发来,陈意云.基于点表示的曲面曲率计算方法[J].小型微型计算机系统,2005,26(5):813-817. 被引量:19
  • 2左传伟,聂玉峰,赵美玲.移动最小二乘方法中影响半径的选取[J].工程数学学报,2005,22(5):833-838. 被引量:17
  • 3赵国群,吴欣,管延锦.刚塑性无网格方法中精度影响因素的研究[J].塑性工程学报,2006,13(3):13-18. 被引量:3
  • 4刘桂荣,顾元通.无网格法理论及程序设计[M].济南:山东大学出版社,2007:60-99.
  • 5Levin D. The approximation power of moving least-squares [ J ]. Mathematics of Computation, 1998, 67(224) : 1517 - 1531.
  • 6Levin D. Mesh-independent surface interpolation [ C]//Proceeding of Geometric Modeling for Scientific Visualization,2003 : 37 - 49.
  • 7Alexa M, Behr J, Cohen-or D, et al. Computing and rendering point set surfaces[J]. IEEE Transactions on Visualization and Computer Graphics, 2003, 9( 1 ) :3 - 15.
  • 8Alexa M, Behr J, Cohen-orr D, et al. Point set surface[ C]//Proceedings of IEEE Visualization, San Diego, California, 2001: 21 -28.
  • 9Weyrich T, Pauly M,einzle S, et al. Post-processing of scanned 3D surface data[ C ]//Proc. of Symp. on Point-Based Graphics,2001, 35 (4) :379 - 386.
  • 10Daniels li J, Ha L K, Ochona T, et al. Robust smooth teature extraction from point clouds [ C ]//proceedings of shape modeling international, 2007 : 193 - 136.

引证文献3

二级引证文献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