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Estimates for linear hardening and effective yield stress of Nano-porous media with non-uniform distribution of voids
Author
Source
ZANCO Journal of Pure and Applied Sciences
Publisher
Salahaddin University-Erbil Department of Scientific Publications
Publication Date
2016-06-30
Country of Publication
Iraq
No. of Pages
10
Main Subjects
English Abstract
This study aims at studying first; the relation between the effective yield stress of perfectly plastic matrix and spherical and elliptical voids, 33 numerical tests curried out with different effective yield stress of the matrix (different materials), so as to estimate the relationship between the effective yield stress of the porous media and perfect plastic matrix.
The relationship between the effective yield stress of the matrix and porous media is estimated by a mathematical equation with less than 5% error.
Using finite element method, and within the representative volume element, the porous materials are modeled according to its microstructure.
And second; the proposed model tested numerically and in the case of linear hardening and another relation is estimated between the linear hardening coefficient of the matrix and the porous media.
66 numerical tests curried out, based on the finite elements numerical tests with three dimensional representatives volume elements; these mathematical equations are proposed so as to predict the macroscopic behavior of the porous media, depending on the solid matrix properties.
These numerical simulations show that the porosity volume fraction can has a strong effect on the overall effective yield stress and linear hardening coefficient.
Data Type
Conference Papers
Record ID
BIM-787280
American Psychological Association (APA)
Khudayr, Yunus Khalid. 2016-06-30. Estimates for linear hardening and effective yield stress of Nano-porous media with non-uniform distribution of voids. International Conference on Engineering and Innovative Technology (1st : 2016 : Erbil, Iraq). . Vol. 28, no. 2 (Supplement) (2016), pp.396-405.Irbil Iraq : Salahaddin University-Erbil Department of Scientific Publications.
https://search.emarefa.net/detail/BIM-787280
Modern Language Association (MLA)
Khudayr, Yunus Khalid. Estimates for linear hardening and effective yield stress of Nano-porous media with non-uniform distribution of voids. . Irbil Iraq : Salahaddin University-Erbil Department of Scientific Publications. 2016-06-30.
https://search.emarefa.net/detail/BIM-787280
American Medical Association (AMA)
Khudayr, Yunus Khalid. Estimates for linear hardening and effective yield stress of Nano-porous media with non-uniform distribution of voids. . International Conference on Engineering and Innovative Technology (1st : 2016 : Erbil, Iraq).
https://search.emarefa.net/detail/BIM-787280