Latin American Journal of Solids and Structures, Volume (12), No (1), Year (2015-2) , Pages (92-114)

Title : ( Combination of Modified Yld2000-2d and Yld2000-2d in Anisotropic Pressure Dependent Sheet Metals )

Authors: Farzad Moayyedian , Mehran Kadkhodayan ,

Citation: BibTeX | EndNote

In the current research to model anisotropic asymmetric sheet metals a new non-AFR criterion is presented. In the new model, Modified Yld2000-2d proposed by Lou et al. (2013) is considered as yield function and Yld2000-2d proposed by Barlat et al. (2003) is considered as plastic potential function. To calíbrate the presen-ted criterion, the yield function which is a pressure dependent criterion requiers ten directional yield stresses such as uniaxial tensile stresses in three directions of 0°, 45°, 90°, uniaxial com-pressive yield stresses in six directions of 0°, 15°, 30°, 45°, 75°, 90° from the rolling direction along with biaxial yield stress. Mo-reover, the plastic potential function which is a pressure indepe-dent criterion needs eight experimental data points such as tensile R-values in seven directions of 0°, 15°, 30°, 45°, 60°, 75°, 90° from the rolling direction and also biaxial tensile R-value. Finally with comparing the obtained results with experimental data points, it is shown that the presented non-AFR criterion predicts compressive yield stress, biaxial tensile yield stress and R-values more accura-tely than Modified Yld2000-2d and it would be considered as a new criterion for anisotropic asymmetric metals.

Keywords

, Yld2000-2d, Modified Yld2000-2d, Anisotropic asymmetric yield functions, Non-associated flow rule, Downhill Simplex
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@article{paperid:1045614,
author = {Moayyedian, Farzad and Kadkhodayan, Mehran},
title = {Combination of Modified Yld2000-2d and Yld2000-2d in Anisotropic Pressure Dependent Sheet Metals},
journal = {Latin American Journal of Solids and Structures},
year = {2015},
volume = {12},
number = {1},
month = {February},
issn = {1679-7825},
pages = {92--114},
numpages = {22},
keywords = {Yld2000-2d; Modified Yld2000-2d; Anisotropic asymmetric yield functions; Non-associated flow rule; Downhill Simplex Method},
}

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%0 Journal Article
%T Combination of Modified Yld2000-2d and Yld2000-2d in Anisotropic Pressure Dependent Sheet Metals
%A Moayyedian, Farzad
%A Kadkhodayan, Mehran
%J Latin American Journal of Solids and Structures
%@ 1679-7825
%D 2015

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