A Constitutive Model for Casting Magnesium Alloy Based on the Analysis of a Spherical Void Model

Abstract:

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Casting magnesium alloys are heterogeneous materials containing numerous voids. Assuming the voids are spherical, in the present investigation, the evolution equations of the growth and nucleation of the voids have been presented. Combining the evolution equation of the void growth with that of the void nucleation, the evolution rule of the voids was obtained. Based on the void evolution rule a nonclassical elastoplastic constitutive model involving void evolution was developed. The corresponding numerical algorithm and finite element procedure were developed and applied to the analyses of the elastoplastic response and the porosity of casting magnesium alloy. The calculated results show the satisfactory agreement with experiments.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

221-224

DOI:

10.4028/www.scientific.net/MSF.546-549.221

Citation:

B. Chen et al., "A Constitutive Model for Casting Magnesium Alloy Based on the Analysis of a Spherical Void Model", Materials Science Forum, Vols. 546-549, pp. 221-224, 2007

Online since:

May 2007

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Price:

$35.00

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