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Influence of surface tension in the surfactant-driven fracture of particulate monolayers

Dear Colleagues,

  I thought some of you may be interested in our recent paper which has been accepted to Soft Matter.  The article is available online, here:

  http://pubs.rsc.org/en/content/articlepdf/2014/SM/C7SM01245D?page=search

   It contains a new model for the fracture of particulate rafts, and some new experimental results as well.  Questions are welcome. 

Calculating material jacobian matrix for ABAQUS UMAT subroutine

Hello everyone, 

 

I found that there is no comprehensive topic about how to calculate material jacobian matrix for UMAT while it's one of the most complicated and important parts of writing a subroutine and a lot of the researchers deal with it. 

I think it would be great if experts share their sources and experiences here for all. I personally, try to provide the basics and essential materials as well. 

Here is an essential available PDF on Imechanica:

Kmomeni's picture

PhD Position in Multiscale Modeling of Materials for Energy

A PhD position is open for summer or fall 2017 in Advanced Hierarchical Materials by Design Lab at Louisiana Tech University on multiscale modeling of materials for energy applications with emphasis on ferroic materials. The candidates must have earned a M.Sc. degree in Mechanical Engineering or related fields and have a solid background in theoretical and computational mechanics, specifically continuum mechanics and finite element modeling, and need to be familiar with a programming language (preferably C/C++).

mohamedlamine's picture

Transformation Matrix

Hello,

The attached file describes the development of the transformation matrix of a beam element:

dongqian's picture

postdoc position in computational mechanics

A postdoc position is available in the Computational Mechanics Lab at the University of Texas at Dallas. The research will focus on high-performance computing application in the general field of computational mechanics. The potential candidate shall have a Ph.D. degree in mechanics, mechanical engineering and related areas with emphasis on computation and simulation and integration with experiments. The project will involve extensive programming on HPC platforms.

Dincoz's picture

what is the reason for Large element deformation?

Hi my Friends,

I am doing abaqus run for a copper specimen under hydrostatic pressure. The magnetude of pressure is in order of several Giga Pascals. In my material definition, I have defined stress-strain flow up to strain of 0.4. But as you can see in attached photo, some elements show very large deformation (considerably larger than 0.4). Knowing that I have not defined stress strain behaviour for srain greater than 0.4, how this can be occure? Unfortunately, niether adaptive meshing nor element deletation were not eliminate this issue!!

 

Best Thanks

Finite Element Model of the Knee

Hello Everyone,

I recently started to do a project on a FE knee model. Right now, the only available software for me is SolidWorks which was originally purchased for CAD modelling. I was wondering if anyone knows whether SolidWorks FE feature is "good enough" for analyzing a knee model (and for other tissues just in case), or you recommend me to push my supervisor to purchase a license of a "Real" FE software such as ABAQUS. If you have any experience of FE modelling of tissues,bone,etc. I would appreciate if you help me out.

Development of a Biofidelic Human Head Model from MRI data

NRL-Simpleware head model

 

Traumatic brain injuries from head impact are a major issue across areas such as defence, automotive and sports, and can be costly to research using experimental testing. These injuries can be explored, though, through 3D models created from scan data and computer simulations.

David Rawlins's picture

FEBio2 Released

 

It’s with great pleasure that we announce the release of version 2.0 of FEBio (Finite Elements for Biomechanics). This new version can be downloaded here .  FEBio is an open-source finite element package, specifically designed for solving problems in the field of computational biomechanics. This new version includes some major changes and contains a number of new and exciting features. Some of the noteworthy changes and additions are listed below.

Shear lock free Timoshenko finite element for thin to thick beam

 In this research work, simple, efficient,highly accurate and shear_lock free finite elements based on the Timoshenko beam theory have been developed (see details for numerical results).

New Simpleware Case Studies

We have a number of new case studies at www.simpleware.com, which cover recent applications of our 3D image to model software in the fields of Biomedicine and Materials research. 

Harold S. Park's picture

PhD Position in Computational Modeling of Soft Active Materials

I am looking to recruit a new PhD student in the area of computational modeling of soft active materials.  The position will begin as early as January 2014, or alternatively in September 2014.  Requirements for this position including the ability to program in C++, knowledge of nonlinear finite element methods and continuum mechanics, and a good background in solid mechanics.  If interested, please contact me at parkhs(at)bu.edu, with a copy of a CV and a description of your previous research experience.

ADINA Research & Development Engineer in Solids and Structures

We at ADINA R & D are looking for a Research & Development Engineer in Solids and Structures — general
finite element development. A PhD in applied mechanics or a related
discipline is highly desirable for this position. Applicant must have excellent
knowledge of finite element methods and good programming skills (Fortran
or C/C++).

manz_0's picture

FLUID CAVITY HELP

I am modelling an inflated sphere. The sphere is composed off two circular planar membranes joined together at the boundries. 
I have modelled the inside of the sphere as a fluid cavity and will inflate it to its threshold limit. 

I have achieved this by using the fluid cavity and fluid inflator method but for some reason when I run my input file I receive the following message: 

SIMULIA's picture

Technology Brief: Optimization of Turbine Blade Dovetail Geometries Using Abaqus and Isight

The reliability of a gas or steam turbine is strongly
dependent on the blade structural design. 
Turbine blades are subjected
to very strenuous environments such as high temperatures, high stresses, and a
potentially high vibration environment. To avoid blade failures, they must be
designed to withstand these conditions. 

Finite Element Analysis Developer position with Convergent Manufacturing Technologies Inc.

Convergent Manufacturing Technologies Inc. (www.convergent.ca), a small but growing university spin-off company located on the University of British Columbia, Vancouver campus, is a world-leader in virtual manufacturing for the aerosapce industry. We develop specialized engineering simulation software and provide engineering support to the leading aerospace companies world-wide.

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

PhD Studentship: Numerical modelling of fault formation

IMPERIAL COLLEGE, LONDON, UNITED KINGDOM

APPLICATION DEADLINE: 15 NOVEMBER 2012

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

mohsenzaeem's picture

Postdoctoral position in computational materials science

A postdoctoral position is available in the area of phase field modeling of solidification/phase transformation in the Department of Materials Science and Engineering at Missouri University of Science and Technology (formerly University of Missouri-Rolla). MSE program at Missouri S&T is one of the largest and most respected MSE programs in the US
(http://mse.mst.edu).

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