Hi I tried to code a basic phase field model for fracture in octave.
It doesn't seem to converge to the correct load. It fails later.
Also mesh refinement did not improve the results.
The link to the GIT is here
https://github.com/dontcallmesuren/Phase-field-modelling.git
Any idea where I am wrong?
Ping me. Thanks in advance.
Hi I tried to code a basic phase field model for fracture in octave.
It doesn't seem to converge to the correct load. It fails later.
Also mesh refinement did not improve the results.
The link to the GIT is here
https://github.com/dontcallmesuren/Phase-field-modelling.git
Any idea where I am wrong?
Ping me. Thanks in advance.
http://www.sciencedirect.com/science/article/pii/S0927025614002031
Abstacrt: A multi-phase field model was developed for non-selective oxidation of metals which captures both the oxidation kinetics and stress generation. Phase field formulation involved a non-conserved phase field variable as the marker for the metallic substrate, oxide scale, and a fluid phase containing oxygen, and a conserved phase field variable representing the concentration of oxygen.
We simulate the fracture processes of ferroelectric polycrystals in
three dimensions using a phase-field model. In this model, the grain
boundaries, cracks and ferroelectric domain walls are represented in a
diffuse way by three phase-fields. We thereby avoid the difficulty of
tracking the interfaces in three dimensions. The resulting model can
capture complex interactions between the crack and the polycrystalline
and ferroelectric domain microstructures. The simulation results show
the effect of the microstructures on the fracture response of the
material. Crack deflection, crack bridging, crack branching and
ferroelastic domain switching are observed to act as the main fracture
toughening mechanisms in ferroelectric polycrystals. Our fully 3-D
This is a recent article in Acta Materialia on the propagation of conducting cracks in ferroelectric ceramics
Title: Conducting crack propagation driven by electric fields in ferroelectric ceramics
Authors: Amir Abdollahi and Irene Arias, Universitat Politecnica de Catalunya (UPC), Barcelona
Abstract:
A postdoctoral position is available in the area of phase field modeling of solidification/phase transformation in the Department of Materials Science and Engineering at Missouri University of Science and Technology (formerly University of Missouri-Rolla). MSE program at Missouri S&T is one of the largest and most respected MSE programs in the US
(http://mse.mst.edu).
There is a PhD (RA) position available starting in the spring 2013 in the Department of Materials Science and Engineering (MSE) at Missouri University of Science and Technology (Missouri S&T- formerly known as University of Missouri-Rolla).MSE program at Missouri S&T is one of the largest and most respected MSE programs in the US (http://mse.mst.edu).
The Ph.D. research project is about developing a 3D elastic-plastic-phase-field model for simulating solidification microstructures.
This is an accepted manuscript in Journal of the Mechanics and Physics of Solids
Title: Phase-field modeling of crack propagation in piezoelectric and ferroelectric materials with different electromechanical crack conditions
Authors: Amir Abdollahi and Irene Arias, Universitat Politecnica de Catalunya (UPC), Barcelona
Abstract:
This is the preprint of an article that will appear in Smart Materials and Structures (SMS)
Title: Crack initiation patterns at electrode edges in multilayer ferroelectric actuators
Authors: Amir Abdollahi and Irene Arias, Universitat Politecnica de Catalunya (UPC), Barcelona
Abstract:
