Discover the NANOMOTION World as an Early Stage Researcher (PhD student) in an EU-wide program on “Nanoelectromechanical Motion in Functional Materials (NANOMOTION)”!

The individual project:

“Finite-element modelling of electromechanically coupled materials”

will be hosted at University of Duisburg-Essen (Germany), www.uni-due.de/mechanika, with secondment to the University College Dublin (Ireland).

This position has been filled.

Hi all

         I want to know how to find nodal stresses. For example say, in a plane stress analysis knowing displacement's dof, we can get stresses. But these stresses are those at the Gaussian points. We can extrapolate these stresses at Gaussian points to nodal values. My question is, for every node we will get four stresse values (extrapolated from stresses at Gaussian points) using these how I can get single value at the node? What averaging techniques I should follow and how ? And after finding a single stress at a node, how we can get stress for the element? 

Thanks in advance

Sreenu 

Can you define FEM in one line?

If yes, what would it be? And, in that case, permit me a second question: How?

...Really interested in knowing what the members of this community think (of this matter), if they do...

--Ajit

[E&OE]

Dear All,

I am currently working on a small academic project of Damage Detection of Bridge Structure using Vibration Frequency and Modes analysis and Finite Element method.

My questions are:

1) Is there any systematic approach to follow this problem?

2) How should I start making its mathematical model? I am considering a truss bridge. Is it appropriate to consider linear elastic deformation of simply supported beam at first point?

3) Is there any standard reference which can help me to construct its mathematical model?

Any help is appreciated. I am a very new learner for this type of problem. I do have some FEM background but having difficulty in constructing mathematical model. 

Thank you,

Bhavin 

For the most up to date ERRATA, go to http://www.mae.wvu.edu/barbero/feacm/errata_feacm.htm 

The Fluid Dynamics and Solid Mechanics group at Los Alamos National Laboratory is currently seeking outstanding candidates to fill a post-doctoral research position in computational solid/structural mechanics.

The prospective candidate is expected to take part in the development of non-classical, global-local plate/shell finite elements for applications involving the response and/or failure of composite structures under severe dynamic loading conditions.

Distribution of electromechanical field near electrode tips is closely related to the reliability of ferroelectric multilayer actuators. In this paper, the deformation and stress concentrations around the electrode tip in two multilayer actuator designs, partially and fully cofired, are investigated by means of experimental measurement and numerical simulations. The digital speckle correlation method (DSCM) is used to measure the full displacement field near the electrode tip with the high spatial resolution. The paths of electric breakdown and cracks initiated from the edge of electrodes were observed.

Hi everyone,

I want to know if there are some opensource softwares to transfer the x-ray raw data to representative discrete pole figure data by Euler angles ? Now I know how to calculate ODF from x-ray raw data with the help of "Mtex". But I dont know how to get representative discrete pole figure data by Euler angles, which is used for CP numerical simulation, from ODF.

Thank you very much!

Shunlai

Doctoral candidate position in biomechanics at EPFL Lausanne, Switzerland

I thought the mechanics community would be interested in the course notes of
Prof. K. J. Bathe on "Finite Element Analysis of Solids and Fluids". This
course was taught at MIT and now is available freely through MIT Open
CourseWare website:

http://ocw.mit.edu/courses/mechanical-engineering/2-094-finite-element-analysis-of-solids-and-fluids-spring-2008/

Enjoy!

*This issue of the Journal Club has been prepared as a group by Ankush Aggarwal, Mo Bai, Mainak Sarkar, and Jee E Rim, and with comments and suggestions from Bill Klug .

In the finite element analysis of a transient problem, the usual procedure is to discretize the space (domain) using finite elements, while in the time direction, a time-stepping scheme based on finite differences is used. Is it possible to use a finite element type discretization in time also?  Is there any work done in this manner?

Three PhD positions are available at the University of Groningen, The Netherlands, to work on

One PhD scholarship (only for European citizens), funded by the Spanish local government of Andalucia, is currently available in the Department of Structures and Construction at the University of Seville (Spain). The PhD position is associated to the Project “Partitioned formulations for dynamic and contact problems” with Professor Ramon Abascal and Professor Jose A. Gonzalez (japerez@esi.us.es) as principal researchers.

A network of polymers can imbibe a large quantity of a solvent and swell, resulting in a gel.  The swelling process can be markedly influenced by a mechanical load and geometric constraint.  When the network, solvent, and mechanical load equilibrate, the gel usually swells by a field of inhomogeneous and anisotropic deformation.  We show that this field in the swollen gel is equivalent to that in a hyperelastic solid.  We implement this theory in the finite-element package, ABAQUS, and analyze examples of swelling-induced deformation, contact, and bifurcation.  Because commercial software like ABAQUS is widely available, this work may provide a powerful tool to study complex phenomena in gels.

Update: The position has been filled; thanks to all who responded.

A post-doctoral position is immediately available at UC Davis. The individual will work on a joint project led by myself and John Pask at LLNL on the development and application of a new finite-element based approach for large-scale quantum mechanical materials calculations.

I am Ramin Aghababaei , new PhD student at Mechanical Department of National University of Singapore.