Superplastic Deforming Analysis Based on Element Free Galerkin Method

Abstract:

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Superplastic large deformation problems always meet handicaps associated with severe mesh distortion and iterative remeshing when traditional mesh-based numerical approaches are used. To eliminate these difficulties, meshless simulation of element free Galerkin method (EFGM) for rigid-viscoplastic(RVP) model and incompressible materials is built upon the Moving Least Squares (MLS) approximation and modified Markov variational principles. Also, a numerical quadrature that aligns integration cells with the local supports of shape functions is presented to compute integrations involved in the objective functions. Satisfying results of a superplastic upsetting example with very large compression ratio demonstrate the feasibility and accuracy for the meshfree method to simulate superplastic large deformation process.

Info:

Periodical:

Materials Science Forum (Volumes 551-552)

Edited by:

K.F. Zhang

Pages:

309-315

DOI:

10.4028/www.scientific.net/MSF.551-552.309

Citation:

Y. Y. Yang and J. Li, "Superplastic Deforming Analysis Based on Element Free Galerkin Method", Materials Science Forum, Vols. 551-552, pp. 309-315, 2007

Online since:

July 2007

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Price:

$35.00

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