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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

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.

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

Multiscale modeling of fracture processes in cementitious materials

Dear all,

 Today our colleague Zhiwei Qian defended his PhD thesis titled: Multiscale modeling of fracture processes in cementitious material. We would like to congratulate Dr Qian on achieving this. The full thesis is available for download at:

For furher news on our project, follow our blog at:


PhD Studentship: Numerical modelling of fault formation, Imperial College, London, UK

PhD Studentship: Numerical modelling of fault formation



***UK/EU Student Funding*** - ***Any International Student will require additional tuition payment***

PhD Studentship: Rock Fracture and Fragmentation - Imperial College, London, UK

PhD Studentship: Rock Fracture and Fragmentation: Optimization



Yifan Huang's picture

Problems about the Contact Roller of the 3D FE Model in ADINA

Dear everyone,

Recently I am running a 3D FE model in ADINA to
analyse the elastic-plastic fracture behaviour.

A three-point bending specimen was modeled and the specimen was
supported by a contact roller.

Here is the problem:

Amir Abdollahi's picture

Phase-field modeling of crack propagation in piezoelectric and ferroelectric materials

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



Amir Abdollahi's picture

Crack initiation patterns at electrode edges in multilayer ferroelectric actuators

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



Eran Bouchbinder's picture

A new postdoctoral position in the mechanics of glassy/amorphous materials

A new postdoctoral position in the mechanics of glassy/amorphous materials is
available at the Weizmann Institute of Science.
The project will focus on
strongly non-linear phenomena such as cavitation, shear-banding and fracture,
with applications to Bulk Metallic Glasses,
and will involve advanced

PhD Students/Post-doctoral Associates- North Carolina State University

Our group at North Carolina State University is hiring PhD students and Post-doctoral Associates in the areas of multiscale modeling, computational mechanics, fracture, and plasticity.

Interested parties should email, and send a cv with a few representative publications.

MA Zikry 


The objective of the workshop, co-organized by Joint Research Centre of the European Commission and Middle East Technical University, is to discuss the present status of physics based constitutive modelling of metallic materials and associated experimental methods.

The Workshop is funded by the European Commission's Integration and Enlargment Programme.  There is no cost for attending the Workshop. A limited number of scholarships is available for participants from the target countries (see attached flyer).

Corrosion rates of reinforcing steel in cracked concrete

Hi all,


In the course of our project, we are monitoring the corrosion behavior of steel reinforcement in cracked concrete, while exposed to simulated sea water. Recent results are posted on our blog, ! Be sure to check them out! For more information, you can contact us, or follow us on twitter @MicrolabM3C4.



Matt Pharr's picture

Rupture of a highly stretchable acrylic dielectric elastomer (VHB)

Dielectric elastomer transducers are often subject to large tensile stretches and are susceptible to rupture. Here we carry out an experimental study of the rupture behavior of membranes of an acrylic dielectric elastomer (VHB 4905). Pure-shear test specimens are used to measure force-displacement curves, using samples with and without pre-cracks. We find that introducing a pre-crack into a membrane drastically reduces the stretch at rupture. Furthermore, we measure the stretch at rupture and fracture energy using samples of different heights at various stretch-rates. The stretch at rupture is found to decrease with sample height, and the fracture energy is found to increase with stretch-rate.
This paper has appeared in the Journal of Applied Physics and can be downloaded from:


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