Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/59582
Title: Assessment and applications of point interpolation methods for computational mechanics
Authors: Liu, G.R. 
Gu, Y.T.
Dai, K.Y. 
Keywords: Compatibility
Computational mechanics
Meshfree method
Point interpolation method
Issue Date: 14-Mar-2004
Source: Liu, G.R.,Gu, Y.T.,Dai, K.Y. (2004-03-14). Assessment and applications of point interpolation methods for computational mechanics. International Journal for Numerical Methods in Engineering 59 (10) : 1373-1397. ScholarBank@NUS Repository.
Abstract: Two meshfree point interpolation methods (PIMs), which are based on the polynomial and the radial basis functions, have been proposed recently in addition to the earlier work with the moving least-squares (MLS) approximation for the field function approximation. However, it is found that PIMs cannot automatically ensure the compatibility of the solution when they are used together with the energy principles. In this paper, issues related to the compatibility of PlMs are studied. A technique of background cell-based nodal selections and a penalty method are proposed to enforce the compatibility of the solution of PIMs. The patch test is studied in great detail. The convergences and performances are investigated for both conforming and non-conforming PIMs. It is found that those methods of the PIM family are very easy to implement, and are very efficient in obtaining numerical solutions for problems of computational mechanics. © 2004 John Wiley and Sons, Ltd.
Source Title: International Journal for Numerical Methods in Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/59582
ISSN: 00295981
Appears in Collections:Staff Publications

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