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ahmedettaf's picture

17 th National Congress on Theoretical and Applied Mechanics June 15-20 (Michigan State University)

Dear all,

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)


Friction, Adhesion and Fracture: From microscale physics to macroscale response

Zhiliang Zhang's picture

PhD Position in Fracture Mechanics at the Norwegian University of Science and Technology (NTNU)

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.

ESIS TC4 2014 - Abstract deadline reminder: 25 October 2013

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:
- Polymers
- Application of fracture mechanics
- Adhesives
- Composites

For more information or to submit your abstract, go to  



7th International Conference on Fracture Mechanics - Call for Abstracts: deadline 25 October

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

Amir Abdollahi's picture

Conducting crack propagation driven by electric fields in ferroelectric ceramics

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


Rashid K. Abu Al-Rub's picture

Postdoctoral Position in Hydraulic Fracture Mechanics Available at Masdar Institute in Abu Dhabi

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

Use Vumat to simulate the hot ductile fracture criterion of Freudenthal

Dear everybody,
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


Konstantin Volokh's picture

Crack thickness

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

Lattice Modeling of Chloride Diffusion in Sound and Cracked Concrete

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 .

Why not Gurson-Tvergaard-Needleman void growth model for plate impact simulations?

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.

Durability of Reinforced concrete from Composition to Protection

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.

polymer fracture in ansys/abaqus

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Can any one tel how to simulate numericall and analytically fracture in polymers?

characteristic Length



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.


Input are:

   Young´s modulus

   max. tensile strength

   fracture energy



   when do i reach xult or what is the plastic strain equivalent

jlcurie's picture

PhD studentship

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

or email to

Gi-Dong Sim's picture

Fatigue of polymer-supported Ag thin films

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.

Erik Bitzek's picture

Fundamentals of Fracture - Symposium at DPG2013

Dear colleagues,

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.

Numerical Simulation of Particle Stress and Fracture using FEMDEM: Application to Process Catalysts

Dr JP Latham, Dr Jiansheng Xiang
Industry Contacts:
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.

phunguyen's picture

A review on multiscale methods for material modeling

Dear all,

Please find enclosed our paper which is published on Journal of Multiscale Modelling
Vol. 3, No. 4 (2011) 1–
42 which gives an overview of state of the art multiscale techniques for material modeling. 

The paper discusses the following topics: homogenization, Representative volume element, computational homogenization (Fe2 methods) for both both bulk materials and strong discontinuities. 

I hope the paper is useful for beginners to the field.

All the bests, 

MKB's picture

Fracture in Composite/Aluminium Joints of Variable Adhesive Properties

Hello everyone,


One of the papers from the 'past' (but still quite actual...I think) and maybe of some interest to various communities. 



A system in which one adherend had two types of surface treatment was tested using a wedge test.

Simple polishing and polishing with subsequent sandblasting were the

treatments used, with a distinct straight line, perpendicular to the sample edges,

separating the two. Despite the clear-cut difference in surface treatment, smooth

ME/PhD Positions open: Fracture Simulation for Visual Effects

ME/PhD Positions open:   Fracture Simulation for Visual Effects

High speed simulations of the fracture of wood, glass, concrete, brick walls, and many other materials are used every day in the visual
effects industry. The project team will develop the next generation of fracture effects technology, bringing visual effects fracturing to the next level through novel computational methods in conjunction with realistic material models for deformation and fracture.


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