Scientific Forming Technologies Corporation (SFTC) is currently looking for several self-motivated and talented individuals to further develop its Finite Element based software product DEFORM™.  Please visit www.deform.com for more details.  Ph.D in Engineering with strong background in mechanics, material science, or manufacturing processes, and programming experience (FORTRAN under Windows or UNIX environment), and excellent problem solving skills are highly desirable.  Candidate should have working experiences in some of the following areas: 

1. We present an interesting application of ADINA FSI in the study of carpal tunnel syndrome. The analyses involve large deformations and contact of multiple flexible bodies which are immersed in a fluid:

http://www.adina.com/newsgH71.shtml

2. Please recall that we offer a very attractive academic package, for research and teaching, for university users. For more information see

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

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

Theory of dielectric elastomers capable of giant deformation of actuation
Xuanhe Zhao, Zhigang Suo
Physical Review Letters, 104, 178302 (2010)

The deformation of a dielectric induced by voltage is limited by electrical breakdown if the dielectric is stiff, and by electromechanical instability if the dielectric is compliant. The interplay of the two modes of instability is analyzed for a dielectric elastomer, which is compliant at a small stretch, but stiffens steeply. The theory is illustrated with recent experiments of interpenetrating networks, and with a model of swollen elastomers. The theory predicts that, for an elastomer with a stress-stretch curve of a desirable form, the voltage can induce giant deformation.

Hi all

I'm looking for a reference paper to comparison the results of

 bending of cirular (annular) plate rested on elastic foundation.

We present an interesting application of ADINA FSI in cardiovascular mechanics, specifically, a potential cause for heart attacks is studied.  Please see     

http://www.adina.com/newsgH63.shtml

I am fairly new to ANSYS and have been trying to model the interaction between glass micro-spheres and silicone polymer micro-structures for my dissertation research.  I've been working through the online manual, but have been getting very odd results when running the simulation.  Any help at all would be appreciated.  The summary of my problem is as follows:

 Modelling:

It may help to first refernce the first two images at : http://bdml.stanford.edu/twiki/bin/view/Main/AnsysModelling

Dears,

 I'm doing some numerical analysis on penetration of infra-strucutres on soils (such as CPT tests) in ABAQUS/CAE .. what I'm recently challenging with is to overcome the element excessive distorsion due to large deformations... I have to apply contact constraints in my model...I would appreciate it if you share your expriences with me regarding the following tips:

1- Is it possible to use the ALE (Arbitrary Lagrangian-Eulerian) mesh adaptivity in ABAQUS/Standard? If yes, do you know of any accessible examples (.cae files) or references?

2- One strange thing is that I can run my model in ABAQUS/Standard with reports of excessive mesh distorion in 4-10 elements and still get the answer. How much I can rely on such results?

We present an application of fluid-structure interaction analysis to the mechanics of red blood cells. For more information see the following link:

http://www.adina.com/newsgH60.shtml

Please recall that we offer a special academic package, for research and teaching, for university users. For more information see:

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

A thin film subject to compressive strain can either bend (for large strain gradient) or wrinkle (for small strain gradient). The bending is traditionally used in thermostats (bimetal stripes), but couple of years ago, it was extended to the nanoscale thin films which can bend and roll-up to tubes with defined number of rotations. The wrinkles are also rather common in macro- and microscale thin films.
Here, we developed an equilibrium phase diagram for the shape of
compressively strained free-hanging films by total strain energy
minimization.

Immersed in an ionic solution, a network of polyelectrolyte polymers imbibes the solution and swells, resulting in a polyelectrolyte gel. The swelling is reversible, and is regulated by ionic concentrations, mechanical forces, and electric potentials. This paper develops a field theory to couple large deformation and electrochemistry. A specific material model is described, including the effects of stretching the network, mixing the polymers with the solvent and ions, and polarizing the gel. We show that the notion of osmotic pressure in a gel has no experimental significance in general, but acquires a physical interpretation within the specific material model.

Hello Dear

I have a problem about informing boundary conditions of a CFFF plate. How can I inform the boundary conditions of corner nodes?

With best wishes 

I am developing an FEA code for a viscoelastic contact analysis. Right now the formulation is assuming small deformations. After deformation I am getting the volume of the body to be less than the original. I want to preserve the volume. ANSYS gives exact results as my code by carrying a normal contact analysis.

High Performance Computing MSc+Ph.D. position available at the University of Glasgow on Massively Parallel Brain Surgery Simulation with the extended finite element method (XFEM and FleXFEM)  (University of Glasgow) -- funding body is EPSRC.

One year MSc in HPC in Edinburgh (all costs covered by funding) + 3 year Ph.D.  and access to HecToR, one of the world's largest super-computer, including training with experts in massively parallel simulation (10,000+ processors).

Supervisor: Dr Stephane Bordas,Dr Lee Margetts (Manchester)

Collaborators: Prof. Ray Ogden and Prof. Gerhard Holzapfel

A PhD position is available for a thesis with SKF Aerospace France in the Laboratoire Génie de Production - Ecole Nationale d'Ingénieurs de Tarbes - France

Detailled subject (in French) can be found at : http://pantale.free.fr

Starting date October 2007

CV+letter can be send until September 8th 2007 to : Olivier.Pantale@enit.fr 

When an electric voltage is applied across the thickness of a thin layer of an dielectric elastomer, the layer reduces its thickness and expands its area. This electrically induced deformation can be rapid and large, and is potentially useful as soft actuators in diverse technologies. Recent experimental and theoretical studies have shown that, when the voltage exceeds some critical value, the homogenous deformation of the layer becomes unstable, and the layer deforms into a mixture of thin and thick regions. Subsequently, as more electric charge is applied, the thin regions enlarge at the expense of the thick regions. On the basis of a recently formulated nonlinear field theory, this paper develops a meshfree method to simulate numerically this instability.

Zhigang Suo, Xuanhe Zhao, and William H. Greene