CLC number: O34
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2016-11-11
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Hsuan-Teh Hu, Shih-Tsung Tseng, Alice Hu. Finite element modeling of superplastic co-doped yttria-stabilized tetragonal-zirconia polycrystals[J]. Journal of Zhejiang University Science A, 2016, 17(12): 989-999.
@article{title="Finite element modeling of superplastic co-doped yttria-stabilized tetragonal-zirconia polycrystals",
author="Hsuan-Teh Hu, Shih-Tsung Tseng, Alice Hu",
journal="Journal of Zhejiang University Science A",
volume="17",
number="12",
pages="989-999",
year="2016",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1500159"
}
%0 Journal Article
%T Finite element modeling of superplastic co-doped yttria-stabilized tetragonal-zirconia polycrystals
%A Hsuan-Teh Hu
%A Shih-Tsung Tseng
%A Alice Hu
%J Journal of Zhejiang University SCIENCE A
%V 17
%N 12
%P 989-999
%@ 1673-565X
%D 2016
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1500159
TY - JOUR
T1 - Finite element modeling of superplastic co-doped yttria-stabilized tetragonal-zirconia polycrystals
A1 - Hsuan-Teh Hu
A1 - Shih-Tsung Tseng
A1 - Alice Hu
J0 - Journal of Zhejiang University Science A
VL - 17
IS - 12
SP - 989
EP - 999
%@ 1673-565X
Y1 - 2016
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1500159
Abstract: Yttria-stabilized tetragonal-zirconia polycrystals (Y-TZP) have been shown to have superplastic properties at high temperatures, opening a way for the manufacture of complex pieces for industrial applications by a variety of techniques. However, before that is possible, it is important to analyze the deformation and fracture mechanisms at a macroscopic level based on continuum theory. In this paper, an elastic-plastic material model with a theoretical large deformation is constructed to simulate the true stress-true strain relationships of superplastic ceramics. The simplified constitutive law used for the numerical simulations is based on piecewise linear connections at the turning points of different deformation stages on the experimental stress-strain curves. The finite element model (FEM) is applied to selected tensile tests on 3-mol%-Y-TZP (3Y-TZP) co-doped with germanium oxide and other oxides (titanium, magnesium, and calcium) to verify its applicability. The results show that the stress-strain characteristics and the final deformed shapes in the finite element analysis (FEA) agree well with the tensile test experiments. It can be seen that the FEM presented can simulate the mechanical behavior of superplastic co-doped 3Y-TZP ceramics and that it offers a selective numerical simulation method for advanced development of superplastic ceramics.
This paper suggests a piecewise linear model to simulate the superplastic behavior of codoped Yttria-stabilized tetragonal-zirconia polycrystals. Though the 1D problem seems simple, there are certainly some difficulties needed to be overcome in the simulation.
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