期刊文献+

小周期型复合材料稳态热传导问题的一种双尺度渐近展开收敛性分析 被引量:7

The Convergence of a Multiscale Asymptotic Expansion for the Steady Heat Transfer Problem of Periodic Composite Materials
下载PDF
导出
摘要 给出一类具有某种对称性小周期复合材料稳态热传导问题解的渐近表示方法.区别于传统多尺度计算方法,将计算过程中需要求解的关于单胞Q的H_(per)1(Q)周期边值问题改为齐次边值问题,这样数值方法求解时协调元空间容易构造;另一方面传统的多尺度渐近解不满足原始问题的边界条件,新构造的渐近形式不仅满足原始问题的物理边界条件,同时保持一定的收敛阶,更能被工程上所接受. A new asymptotic expansion is given for a class of steady heat transfer problems of periodic composite materials. Compared to the classical form, the stronger Hpler(Q) periodic boundary condition of auxiliary equation is replaced with 0 boundary condition. The new asymptotic expansion is still convergent to the solution of the original problem. This method is convenient for numerical computation, because the conforming element space for H0I(Q) is easier to be constructed than for Hpler(Q) . On the other hand, the new asymptotic expansion solution satisfies boundary condition of the original problem, which cannot be preserved in classical method.
出处 《数学物理学报(A辑)》 CSCD 北大核心 2007年第4期682-687,共6页 Acta Mathematica Scientia
基金 国家自然科学基金(10471133) 重点项目基金(90405016) 重大项目基金(10590353)资助
关键词 均匀化 多尺度 椭圆问题 复合材料 Homogenization Multiscale method Elliptic problem Composite materials
  • 相关文献

参考文献8

  • 1Adams R A.Sobolev Spaces.New York:Academic Press,1975.
  • 2Bensoussan A,Lions J L,Papanicolaou G.Asymptotic Analysis for Periodic Structures.Amsterdam:North-Holland Publishing Company,1978.
  • 3Cao L Q,Cui J Z.Asymptotic expansions and numerical algorithms of eigenvalues and eigenfunctions of the Dirichlet problem for second order elliptic equations in perforated domain.Numer Math,2004,96:525-581.
  • 4Chen Z,Hou T Y.A mixed multiscale finite element method for elliptic problems with oscillating coefficients.Math Comp,2003,72:541-576.
  • 5Cioranescu D,Donoato P.An Introduction to Homogenization.Oxford:Oxford University Press,1999.
  • 6Evans L C.Partial differential equations.Rhode Island:American Mathematical Society Providence,1998.322-323.
  • 7Hou T Y,Wu X H,Cai Z.Convergence of a multiscale finite element method for elliptic problem with rapidly oscillating coefficients.Math Comp,1999,68:913-947.
  • 8Oleinik O A,Shamaev A S,Yosifan G A.Mathematical problems in elasticity and homogenization.Amsterdam:North-Holland Publishing Company,1992.

同被引文献57

引证文献7

二级引证文献52

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