Effective Yield Strength for Material Powder Consolidated at Stage II Compaction

Sophie  Gangloﬀ; Larbi  Siad

doi:10.4236/wjm.2014.49028

Larbi Siad^*, Sophie Gangloﬀ

Abstract: This work is concerned with the estimation from the outside of effective yield strength for the stage II consolidated material package of axisymmetric solid particles. Once an appropriate simple representative axisymmetric unit cell is chosen, the kinematical approach of the yield design homogenization method is used in order to obtain external estimates which has been found depending on the loading history (isostatic and closed die compactions) as well as on the relative density of the material powder. For comparison purpose, finite element simulations that describe the behavior of spherical elastic plastic particles uniformly distributed inside the material powder are carried out.

Keywords: Stage II Compaction, Kinematic Approach, Relevant Failure Mechanism, Unit Cell Model, Effective Yield Strength, Finite Element Analysis

Cite this paper: Siad, L. and Gangloﬀ, S. (2014) Effective Yield Strength for Material Powder Consolidated at Stage II Compaction. World Journal of Mechanics, 4, 273-288. doi: 10.4236/wjm.2014.49028.

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