Effect of numerical integration on meshless methods

被引：52
|
作者：
Babuska, Ivo [2 ]
Banerjee, Uday [1 ]
Osborn, John E. [3 ]
Zhang, Qinghui [4 ]
机构：
[1] Syracuse Univ, Dept Math, Syracuse, NY 13244 USA
[2] Univ Texas Austin, Inst Computat Engn & Sci, Austin, TX 78712 USA
[3] Univ Maryland, Dept Math, College Pk, MD 20742 USA
[4] Sun Yat Sen Univ, Dept Sci Comp & Comp Applicat, Guangzhou 510275, Guangdong, Peoples R China
来源：
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 2009年 / 198卷 / 37-40期
关键词：
Galerkin methods; Meshless methods; Quadrature; Numerical integration; Error estimates; CONFORMING NODAL INTEGRATION; UNITY QUADRATURE; GALERKIN; PARTITION;
D O I：
10.1016/j.cma.2009.04.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, we present the effect of numerical integration on meshless methods with shape functions that reproduce polynomials of degree k >= 1. The meshless method was used on a second order Neumann problem and we derived an estimate for the energy norm of the error between the exact solution and the approximate solution from the meshless method under the presence of numerical integration. This estimate was obtained under the assumption that the numerical integration scheme satisfied a form of Green's formula. We also indicated how to obtain numerical integration schemes satisfying this property. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：2886 / 2897
页数：12
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