Tung Phan Van's blog
Abaqus 6.9
Submitted by Tung Phan Van on Sun, 2009-06-21 15:54.Hi all,
Please could anyone help me for this?
How to link Abaqus CAE with UMAT subroutine? When I run simulation, it announced that
"Error in job tensile: Problem during linking - Abaqus/Standard User Subroutines. This error may be due to a mismatch in the Abaqus user subroutine arguments. These arguments sometimes change from release to release, so user subroutines used with a previous release of Abaqus may need to be adjusted.
Job tensile aborted due to errors."
Thanks for your helps
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The International Conference on Computational Solid Mechanics CSM2008 in Ho Chi Minh City, 27-30 November, 2008
Submitted by Tung Phan Van on Sat, 2008-09-06 09:31.The Conference will be held in University of Technical Education, Hochiminh City
1, Vo Van Ngan, Thu Duc, Hochiminh City, Vietnam
Lemaitre damage material model
Submitted by Tung Phan Van on Sat, 2007-12-08 15:15.
The Lemaitre damage material model was developed by Lemaitre for an isotropic linear elastic virgin material with stress-strain law as follows
\begin{equation}
\label{eq:22}
\sigma_{ij}=(1-D)C_{ijkl}\epsilon_{kl} \quad D\in[0,1]
\end{equation}
where $D$ represents the extent of damage with the damage evolution law
\begin{equation}
\label{eq:23}
D(\bar{\epsilon})=1-(1-A)\epsilon_{D_{0}}\bar{\epsilon}^{-1}-Ae^{-B(\bar{\epsilon}-\epsilon_{D_{0}})}
\end{equation}
where $A$ and $B$ are the characteristic parameters of the material, $\epsilon_{D_{0}}$ is the initial damage threshold strain and $\bar{\epsilon}$ is the effective strain defined by
\begin{equation}

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