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Abstract:

The aim of this paper is to obtain error estimates for moving least square (MLS) approximations in ℝN. We prove that, under appropriate hypotheses on the weight function and the distribution of points, the method produces optimal order error estimates in L∞ and L2 for the approximations of the function and its first derivatives. These estimates are important in the analysis of Galerkin approximations based on the MLS method. In particular, our results provide error estimates, optimal in order and regularity, for second order coercive problems.

Registro:

Documento: Artículo
Título:Error estimates in Sobolev spaces for moving least square approximations
Autor:Armentano, M.G.
Filiación:Departamento de Matemática, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Palabras clave:Error estimates; Meshless method; Moving least square
Año:2002
Volumen:39
Número:1
Página de inicio:38
Página de fin:51
DOI: http://dx.doi.org/10.1137/S0036142999361608
Título revista:SIAM Journal on Numerical Analysis
Título revista abreviado:SIAM J Numer Anal
ISSN:00361429
CODEN:SJNAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00361429_v39_n1_p38_Armentano

Referencias:

  • Armentano, M.G., Durán, R.G., Error estimates for moving least square approximations Appl. Numer. Math., , to appear
  • Belytschko, T., Lu, Y.Y., Gu, L., A new implementation of the element free Galerkin method (1994) Comput. Methods Appl. Mech. Engrg., 113, pp. 397-414
  • Belytschko, T., Krysl, P., Element-free Galerkin method: Convergence of the continuous and discontinuous shape functions (1997) Comput. Methods Appl. Mech. Engrg., 148, pp. 257-277
  • Brenner, S.C., Scott, L.R., (1994) The Mathematical Theory of Finite Element Methods, , Springer-Verlag, New York
  • Ciarlet, P.G., (1978) The Finite Element Method for Elliptic Problems, , North-Holland, Amsterdam
  • Johnson, L.W., Riess, R.D., (1982) Numerical Analysis, 2nd Ed., , Addison-Wesley, Reading, MA
  • Johnson, C., (1987) Numerical Solution of Partial Differential Equations by the Finite Element Method, , Cambridge University Press, Cambridge, UK
  • Lancaster, P., Salkauskas, K., Surfaces generated by moving least squares methods (1981) Math. Comp., 37, pp. 141-158
  • Levin, D., The approximation power of moving least-squares (1998) Math. Comp., 67, pp. 1517-1531
  • Shepard, D., A two-dimensional interpolation function for irregularly spaced points (1968) Proceedings of the ACM National Conference, pp. 517-524
  • Taylor, R., Zienkiewicz, O.C., Oñate, E., Idelsohn, S., Moving least square approximations for the solution of differential equations (1995) Research Report 74, , CIMNE, Barcelona, Spain

Citas:

---------- APA ----------
(2002) . Error estimates in Sobolev spaces for moving least square approximations. SIAM Journal on Numerical Analysis, 39(1), 38-51.
http://dx.doi.org/10.1137/S0036142999361608
---------- CHICAGO ----------
Armentano, M.G. "Error estimates in Sobolev spaces for moving least square approximations" . SIAM Journal on Numerical Analysis 39, no. 1 (2002) : 38-51.
http://dx.doi.org/10.1137/S0036142999361608
---------- MLA ----------
Armentano, M.G. "Error estimates in Sobolev spaces for moving least square approximations" . SIAM Journal on Numerical Analysis, vol. 39, no. 1, 2002, pp. 38-51.
http://dx.doi.org/10.1137/S0036142999361608
---------- VANCOUVER ----------
Armentano, M.G. Error estimates in Sobolev spaces for moving least square approximations. SIAM J Numer Anal. 2002;39(1):38-51.
http://dx.doi.org/10.1137/S0036142999361608