I would like to bring to your attention the following minisymposium that is organized as part of the NCTAM 17 (Michigan State University, June 15-20, 2014)
The paper under discussion is:
by T. Yasuoka, Y. Mizutani, A. Todoroki.
The discussion at: discussion of fracture paper #6 .
The Faculty of Engineering Science and Technology (IVT) at the Norwegian University of Science and Technology (NTNU) announces one vacant PhD position in the field of Fracture of Ni-alloys.
7th International Conference on Fracture of Polymers, Composites and Adhesives - 14-18 September 2014, Eurotel Victoria, Les Diablerets, Switzerland
We are looking for both experimetal and analytical work, in order to give a balanced view of the subject areas:
- Application of fracture mechanics
For more information or to submit your abstract, go to www.esistc4conference.com
The 7th International Conference in the series will take place once again at Les Diablerets, in Switzerland on 14-18 September 2014.
It organised by the European Structural Integrity Society - Technical Committee 4 on Fracture Mechanics related to Polymers, Polymeric Composites and Adhesives. To submit your abtract, go to http://www.esistc4conference.com/submit-abstract.html
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
Postdoctoral position at IMDEA Materiales (Madrid, Spain) in crystal plasticity finite element simulation of Ni-based superalloySubmitted by jsegurado on Mon, 2013-09-09 14:27.
The research group of Multiscale Materials Modeling at IMDEA Materials Institute seeks a:
Postdoctoral Researcher (PhD in mechanical engineering or materials science)
Postdoctoral Research Fellow position in hydro-fracturing (fracking) is
available immediately at Masdar Institute of Science and Technology in Abu
Dhabi in United Arab Emirates. Masdar Institute is established in collaboration
with Massachusetts Institute of Technology. The research project focuses on
using advanced computational fracture and damage mechanics for simulating
hydro-fracturing of rocks in hydrocarbon fields. The candidate is expected to
have a PhD in the field of geomechanics, or civil engineering with solid
knowledge of hydraulic fracture mechanics and excellent theoretical and
I’m modeling crack and I have difficulty with visibility criterion I
upload a picture; the blue square is support domain for gauss point 2, thick
red line is crack and other points are field nodes you can see crack tip in
this zoomed picture now my problem is for the gauss point number 2 which field
nodes should using in interpolation. Is it correct to collect all nodes in the
I have just studied Abaqus and would like to use Vumat to simulate the hot ductile
fracture criterion of Freudenthal which have the equation: D=integral(0-fracture strain)
of (Smises stress)*d(strain). The fracture will be appear when I reach 1 unit.
Could you please show me how to write algorithm adding temperature to calculate (D) and
out put (D) in Vumat.
thanks you so much
I am looking forward to hearing from you
cracks do not appear as a result of an ideal separation of two adjacent atomic
layers. Just the opposite, cracks appear as a result of the development of
multiple micro-cracks triggered by the massive breakage of atomic bonds. The microcracking
and the bond breakage are not confined to two neighbor atomic planes: the
process involves thousands atomic planes within the representative characteristic
volume of size h. This size defines the width (not the lenth) of the damage
localization zone and it can be called the crack thickness. The knowledge of
Our paper titled "Lattice modeling of chloride diffusion in sound and cracked concrete" has been accepted for publication by Cement and Concrete Composites journal. It deals with numerical modeling of chloride transport coupled with fracture. Registered subscribers can download the paper at http://www.sciencedirect.com/science/article/pii/S0958946513000899 .
More news can be found at our official project blog: http://microlab-m3c4.blogspot.nl/
Can someone answer me if Gurson-Tvergaard-Needleman void growth model is not suitable for flyer-plate impact simulations? I have come across some papers who have derived void growth equations to simulate fracture in ductile mateials like OFHC copper etc., subject to plate impact (uniaxial strain high strian rate loading). I have attached 3 of them. But none of them have used Gurson's yield function. I did not find any explanation if GTN model has any drawbacks in simulating spallation phenomena found in plate impact simulations.
Only Worswick and co-workers have used Gurson's model to simulate spallation in plate impact of brass. They have validated their free surface velocity profile with the experimental data.
Siva Prasad AVS.
Simulation of Particle Stress and Fracture using FEMDEM: Application to Process
Matthey CASE/EPSRC PhD Studentship Award- Duration 36 months
The 6th International PhD Student Workshop on Durability of Reinforced
Concrete will be held in Delft, The Netherlands, during July 4 and 5,
2013, hosted by TUDelft. After a series of successful workshops, most
recently in Espoo (2012), Madrid (2010) and Guimarães (2009), IPSW2013
will be held under the auspices of RILEM EAC (Educational Activities
Committee), aiming to bring together young researchers in the field of
durability of concrete.
This workshop, aimed at PhD students dealing with concrete durability (in a broad sense), is free of charge.
More info can be found at: http://www.citg.tudelft.nl/actueel/congressen-en-symposia/events-materia...
Can any one tel how to simulate numericall and analytically fracture in polymers?
For more information click on
is there a way to get the characteristic length of one element? I wanna calculate xult (when the element is cracked, fracutred..).
I use the concrete damage plasticity model and after reaching the tensile strength i assume a linear softening with fracture energy.
max. tensile strength
when do i reach xult or what is the plastic strain equivalent
A new opening for PhD studies has come out at University of Sheffield:
Computational Mechanics of Fracture on Advanced Composite Aerospace Structures using XFEM
For further details click on http://www.sheffield.ac.uk/mecheng/phd/projects/mechanics-of-materials/fracture-composite-structures
or email to firstname.lastname@example.org
The fatigue behavior of Ag films on polyethyleneterephthalate substrates was studied using electrical resistance measurements.
Scanning electron microscopy images showed two types of failure: typical fatigue failure with extrusion–intrusion pairs, and ductile
failure with local necking. Once through-thickness cracks are formed in the metal layer, cracks propagate and the resistance increases abruptly for both failure modes. The effect of adhesion on fatigue life is discussed in terms of concurrent delamination, crack initiation and propagation.
The paper has been published in Scripta Materialia and can be downloaded from:
Recently accepted for publication in Soft Matter:
We are organizing a symposium titled "Fundamentals of Fracture" at the 2013 Spring Meeting of the German Physical Society, taking place in Regensburg, Germany.
The aim of this international symposium is to bring together specialists from the fields of solid state physics, materials science, continuum mechanics, statistical physics and mathematics to discuss the latest scientific developments related to fundamental mechanisms and physics of fracture.
Dr JP Latham, Dr Jiansheng Xiang
Principal Investigator - Dr Michele Marigo
Co-investigators - Dr Mikael Carlsson, Prof Hugh Stitt
Applications are invited for a PhD studentship to join AMCG (Applied Modelling and Computational Group) in the Department of Earth Science & Engineering.