iMechanica

One of the most significant factors in molecular dynamic simulatin is to choose the proper potential. Recently, I did some searching jobs on Vanadium (V) potential and finally decided which potential I am going to use. Here is a simple summary:
A brief introduction of EAM, F-S and MEAM potentials for BCC transition metals

How can we perform first structural and then thermal analysis in ANSYS (version 12) ? All the examples show the sequence the other way. I can't go for Direct coupled method as the materials are elastic-plastic (plasticity is not supported by direct coupling elements).

I  really need help with it .Anyone can help me . Thanks a lot . 

We are interested in making contact with self-motivated candidates with significant experience in multiscale simulation, if possible with a Physics or Mathematics background for projects involving the simulation of multiscale fracture. Researchers with experience in ab initio models are particularly encouraged to make contact.

Please contact stephane dot bordas at gmail dot COM for more detail.

 Thank you

Stephane   

Hi,

I'm a fresher in abaqus. Now I'm trying to simulate the damage of brittle kind of materials, like concrete with abaqus on mesoscale. But there are some problems now...

Given the success of my facebook course Mechanics of Materials MMCM see here, we had so many videos and photos, that I suggested the students to create a Youtube channel.   Here it is, with many videos based on powerpoint presentations I had from my course, and that of collegues in Torino (Masssimo Rossetto), or some conferences presentations, which the students transformed into videos.  Thanks in particular to Mariella Greco, and Simone Legari.

Summary:

I am thinking of informally conducting a specific case-study concerning the FEA solvers. The reference problem is a very simple but typical problem from stress analysis, leading of course to the linear systems: Ax = b and Ax = Lx.

I seek advice as to what software libraries currently available in the public domain would be best to use---the ones that would be fastest in terms of execution time for the reference problem.

I have a personal and longer-term research interest with certain issues related to the solvers technologies.

Dear all,

I have read the paper titled Haversian cortical bone model with many radial microcraks: An elastic analytic solution. My problems and the paper are attached.I hope you can see the problems and the corresponding paper. Thanks for your help.

Sincerely yours,

Xu Wang

A postdoctoral fellowship is available in the Duke Computational Mechanics Laboratory, beginning in September of 2010 (with flexibility on timing).  Funding for the fellowship concerns research in the simulation of dynamic fracture of polycarbonate.  The ideal candidate will have experience in some combination of the following areas (in no particular order of importance):

I read this article today, perhaps other beginners like me can also get some benefit from this:

Title: Overview of constitutive laws, kinematics, homogenization and multiscale methods in crystal plasticity finite-element modeling: Theory, experiments, applications.  

Hi All,

A minisymposium on Meshfree and Particle Methods will be organized for the International
Conference on Computational Methods (ICCM) 2010. ICCM 2010 will be organized and hosted by
College of Mechanical & Vehicle Engineering, Hunan University during November 19th-21st, 2010 in
Zhangjiajie, Hunan Province, China. Please check the ICCM 2010 website
http://dmvb.hnu.cn/ICCM2010 for more information about the conference and the venue.

We present an application of ADINA FSI in the study of the human coughing mechanism. The aim of the study is to help surgeons to position tracheal implants effectively. Please see

http://www.adina.com/newsgH69.shtml

You can find many other examples of applications of ADINA in the analysis of multiphysics problems here:

http://www.adina.com/multiphysics.shtml

Hello Everyone

Can anybody suggest a good review article for the efforts in computational fatigue and any relevant books.

Thanks

Regards

As of 11 May 2010, the number of registered users of iMechanica exceeded 20,000 , the total number of posts is 8191, the total number of comments is 14557.  The growth of iMechanica community remains steady since its launch.

Founded in September 2006, iMechanica aims

A PhD position is available at Centre Henri Tudor (Luxembourg) and Cardiff University (UK) on the simulation of crack propagation with adaptive extended finite element methods.

Candidates from any country are eligible. 

Please contact me for details.

Stephane

A new section on applications has been added to the website on failure criteria.  Six examples of failure applications are given which span the range from very ductile to very brittle isotropic and homogeneous materials.  Summarizing two of the examples, first a very ductile polymer is examined wherein its tensile, compressive, and shear strengths are determined as influenced by a state of superimposed hydrostatic pressure. An interesting fallout from the example shows just how seriously in error the Mises criterion can be, even when applied to a ductile material.

Submissions are now closed for oral presentations to WOM 2011, however, contributions are invited for stand-alone posters. WOM 2011 is to take place in Philadelphia, USA - April 3-7 next year.  It will focus on both the fundamental and applied aspects of wear and friction of materials at the macro-, micro- and nano-scale. Special emphasis will be placed on wear issues in harsh environments, energy conversion, and debris particle generation and its impact on the environment.

Dear Colleagues,  

A postdoctoral position is available starting immediately in the Johnson Research Group at the University of Illinois at Urbana-Champaign.  The position will involve theoretical and computational modeling of the mechanics of soft materials/flexible electronics/adhesion, with applications in photonics and energy storage.  The work will involve significant interactions with experimental groups in the Department of Materials Science at the University of Illinois.  Applicants should send a CV with a list of references to htj@illinois.edu.

At the invitation of Yonggang Huang, I’ll give 4-hour lectures at the NSF Summer Institute Course on the Mechanics of Soft Materials.   I attach the slides of the lectures, to be given on Monday, 10 May 2010.  An abstract of the lectures follows.

I welcome and encourage all my fellow imechanicians to participate in the international conference being organised at Thapar university patiala,  punjab, india during november 2010.

The details regarding the conference and research paper format are attached.

for further queries log on to www.thapar.edu, or http://www.thapar.edu/news-eventDet.asp?id=97 or email at

icetme2010@thapar.edu

Rahul Chhibber

I am inspired by Mike Ciavarella's recent post on the Shape of the Eiffel Tower to share a bit of my own obsession with the Tower...

I am trying to model a simple 2-D consolidation test in Abaqus.  I am essentially applying a distributed line load across the top of a square soil mesh.  The excess pore pressures that are generated are plotting as negatives.  Is this the expected sign convention for a 2-phase soil/water mesh in compression?