User login

fatigue crack growth

Having glanced at the web site I can see that it might be useful to shed some light on fatigue crack growth and crack closure based concepts.

Free Materialise and ANSYS event on Virtual Prototyping Breakthroughs for Innovative Healthcare Applications

Are you curious to learn more about FEA or CFD simulations on patient-specific data? Then Materialise and ANSYS would like to invite you to their upcoming free seminar on “Virtual Prototyping Breakthroughs for Innovative Healthcare Applications”, where you will learn how numerical solutions can help the Biomedical and Healthcare industry in the development of innovative solutions.

Matt Pharr's picture

Rowland Junior Fellows Program Applications

The following message is from Dr. Frans Spaepen at Harvard University:

Dear colleague,

  I am writing to draw your attention to our annual solicitation for
applications to Rowland Junior Fellows Program, which may be of interest to
your graduate students and postdoctoral fellows.

Two positions for guest researchers(post-doc) at NIST on biomechanics

Two positions for guest researchers(post-doc) at NIST on biomechanics 

The effects of boron dopings and boron grafts on the mechanical properties of single-walled carbon nanotubes

The effects of boron doping and boron grafts on the mechanical behaviour of armchair (6, 6)
and zigzag (10, 0) single-walled carbon nanotubes (SWCNTs) under axial loading are
investigated using the molecular dynamics (MD) simulation method. The results show that
Young’s moduli, the tension strength, the buckling loads and the buckling strains of SWCNTs
decrease after functionalization. The influences of the distribution density of functionalization
on Young’s moduli of SWCNTs are also systematically studied. The results show that Young’s

Internship available in FEA of elastomers

Internship Announcement  

Title : FEA of Elastomers

Category: Internship in Industry

Employer: Schlumberger Technology Corporation

Location: Sugar Land, TX, USA

Ning Wang's picture

Embryonic stem cell softness dictates stress-induced spreading and differentiation

We recently find that embryonic stem cells are very sensitive to a local cyclic stress applied to the focal adhesion.  They spread and differentiate (Oct3/4 downregulation) in response to this local force.

Relation between particle size and debonding stress

Hi everybody,

do you know where I can find some informations about the relation

between particle size and critical normal stress at the interface particle /matrix

for a particle embedded in a matrix?

I read the Chen's article 'Size effect of particles on the damage dissipation in nanocomposites'

but this article deals with spherical particles. I am studying clay/matrix nanocomposites and I would like to

calculate the relation between clay size and debonding stress.



MichelleLOyen's picture

Twitter and iMechanica

How many iMechanica users are on Twitter?  And how many are on Twitter with professional contacts? 

 I started to use Twitter about 4 months ago in a completely social, non-professional context.  As a personal (expat-focussed) blogger, I started to notice that I was
catching blog posts in my Twitter feed before I would see them in my
feed aggregator (Bloglines).   Twitter has emerged as a different sort
of feed aggregator, as well as a provider of information. 

0 Thickness Cohesive Zone Modeling

Hi friends:

This is Henry, a graduate student in USA.

I am recently trying to model a 0 thickness cohesive zone with curvature and I realize that by using mesh edit.

When I made it and submit the job, the ABAQUS always told me the node numbering has a problem and thus abort the job.

Does anyone who has experience with that?



Serdar Goktepe's picture

Mini-Symposium on Electro-Active Materials at WCCM IX

Dear Colleagues,

We like to draw your attention to the mini-symposium

MS6043 - Computational Mechanics of Electro-Active Materials

organized by Prof. Ellen Kuhl, Prof. Andreas Menzel and myself in the
WCCM IX. The abstract outlining the objectives of this integrative
mini-symposium is enclosed to this post as plain text and also as a

Ji Wang's picture

2009 Symposium on Piezoelectricity, Acoustic Waves and Device Applications, Wuhan, China on Dec 17-20

Website: Papers can be in Chinese or English   The deadline for abstract submission to the Joint Conference of the 2009 Symposium on Piezoelectricity, Acoustic Waves and Device Applications and China Symposium on Frequency Control Technology (Spawda 09) has been extended to October 30, 2009. The conference information can be found at

Sprunger's picture

Call for Abaqus Papers for 2010 SIMULIA Customer Conference (RI)

Call for Abaqus Papers for 2010 SIMULIA Customer Conference (RI)

Abstracts due Monday, November 9, 2009!

More Information at: 

Force Matrix for Transient Thermal Analysis

Choose a channel featured in the header of iMechanica: 


I have developed a 2D transient thermal analysis FE code which doesn't
seem to be correct. I am sure there is a conceptual problem in the
formulation itself which I have not been able to understand and could
not find concrete information in books.

I am putting up the question in a very simplified form so as to address the correctness of the formulation.

Kaushik Dayal's picture

Nonequilibrium molecular dynamics for bulk materials and nanostructures

This is a preprint that of an article that will appear in J. Mech. Phys. Solids. (doi: 10.1016/j.jmps.2009.10.008).  Nonequilibrium molecular dynamics for bulk materials and nanostructures,
by Kaushik Dayal and Richard D. James

Teng Li's picture

A quality map of transfer printing

M.B. Tucker, D.R. Hines, T. Li, A quality map of transfer printing, Journal of Applied Physics, 106, 103504, (2009)  DOI: 10.1063/1.3259422

Teng Li's picture

Snap-through instability of graphene on substrates

T. Li, Z. Zhang, Snap-through instability of graphene on substrates, Nanoscale Research Letters,DOI: 10.1007/s11671-009-9460-1 (2009). (Open access)

Announcing free version of Kalker's rolling contact model

Dear all,

Herewith I would like to announce that we have decided to make our CONTACT software publicly available. You can obtain a free copy at the web-site We hope that the software is beneficial to you. We further hope that you give us helpful feedback in return.

PhD Studentship: Rock Fracture and Fragmentation

PhD Studentship: Rock Fracture and Fragmentation
Imperial College London - Department of Earth Science and Engineering

A new Method for Detection of Degradation in Die-Attach Materials by In-Situ-Health Monitoring of Thermal Properties

The application of electronic products is established in many fields of everyday life, for example in automotive industry, medical or communication technology. This leads to the necessity of investigation of safety and reliability of such components. During lifetime testing of the electronic component different loads and mechanisms can lead to degradation and failure. For die attach materials these failures can be cohesive or adhesive in their nature.

Announcement for the 5th Conference on Advances in Mechanical Engineering and Mechanics - Tunisia

We are pleased to announce the first call for papers for the 5th International Conference on Advances in Mechanical Engineering and Mechanics (ICAMEM2010) which will be held in Hammamet, Tunisia from December 20th to 22nd, 2010.


Subscribe to iMechanica RSS Subscribe to iMechanica - All comments

Recent comments

More comments


Subscribe to Syndicate