[HTML][HTML] Deep neural network approach to estimate biaxial stress-strain curves of sheet metals

A Yamanaka, R Kamijyo, K Koenuma, I Watanabe… - Materials & Design, 2020 - Elsevier
To improve the accuracy of a sheet metal forming simulation, the constitutive model is
calibrated using results from multiaxial material testing. However, multiaxial material testing …

Multiscale prediction of mechanical behavior of ferrite–pearlite steel with numerical material testing

I Watanabe, D Setoyama, N Nagasako… - … journal for numerical …, 2012 - Wiley Online Library
Multiscale mechanical behaviors of ferrite–pearlite steel were predicted using numerical
material testing (NMT) based on the finite element method. The microstructure of ferrite …

A method of predicting macroscopic yield strength of polycrystalline metals subjected to plastic forming by micro–macro de-coupling scheme

I Watanabe, K Terada - International Journal of Mechanical Sciences, 2010 - Elsevier
We introduce a method of predicting the macroscopic yield strength of polycrystalline metals
subjected to plastic forming, which hinges on the reliability of the micro–macro decoupling …

Gradient-enhanced ductile fracture constitutive modeling in implicit two-scale finite element analysis

T Tan, I Watanabe - Journal of the Mechanics and Physics of Solids, 2025 - Elsevier
In the field of damage modeling for ductile materials, numerous models have successfully
addressed various fracture responses, as well as the need for robust algorithms and …

Characterization of macroscopic tensile strength of polycrystalline metals with two-scale finite element analysis

I Watanabe, K Terada, EA de Souza Neto… - Journal of the Mechanics …, 2008 - Elsevier
The objective of this contribution is to develop an elastic–plastic–damage constitutive model
for crystal grain and to incorporate it with two-scale finite element analyses based on …

Quantitative re-examination of Taylor model for FCC polycrystals

Y Tadano, M Kuroda, H Noguchi - Computational materials science, 2012 - Elsevier
The quantitative adequacy of the Taylor model for representing the behaviors of FCC
polycrystals is discussed through comparison with crystal plasticity analysis using the …

Characterization of yielding behavior of polycrystalline metals with single crystal plasticity based on representative characteristic length

I Watanabe, D Setoyama, N Iwata… - International Journal of …, 2010 - Elsevier
Single crystal plasticity based on a representative characteristic length is proposed and
introduced into a homogenization approach based on finite element analyses, which are …

Computational aspects of tangent moduli tensors in rate-independent crystal elastoplasticity

K Terada, I Watanabe - Computational Mechanics, 2007 - Springer
The computational efficiencies of the continuum and consistent (algorithmic) tangent moduli
tensors in rate-independent crystal elastoplasticity are examined in conjunction with the …

Three-dimensional finite element analysis of unintended deformation of polycrystalline billet in micro-extrusion

I Watanabe, T Amaishi - The International Journal of Advanced …, 2022 - Springer
An unintended anisotropic deformation of a polycrystalline billet has been observed in micro-
extrusion, which implies that the extruded billet shows a curved shape rather than an …

Effects of shape and size of crystal grains on the strengths of polycrystalline metals

K Terada, I Watanabe… - International Journal for …, 2006 - dl.begellhouse.com
We investigate the effects of shape and size of crystal grains on the yielding behavior of
polycrystalline metals by applying the two-scale finite element method, which is based on …