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Stretching and polarizing a dielectric gel immersed in a solvent

Submitted by Xuanhe Zhao on
research
suo group research
dielectric
electromechanical instability
gel

      This paper studies a gel formed by a network of cross-linked polymers and a species of mobile molecules. The gel is taken to be a dielectric, in which both the polymers and the mobile molecules are nonionic. We formulate a theory of the gel in contact with a solvent made of the mobile molecules, and subject to electromechanical loads. A free-energy function is constructed for an ideal dielectric gel, including contributions from stretching the network, mixing the polymers and the small molecules, and polarizing the gel.

Foods and Composite Materials

Submitted by Aaron Goh on

Foods are good examples of composite materials that everyone can relate to.  From foams like ice creams to emulsions like spreads to hydrogels like jams to viscoelastic solids like cheese to porous, brittle solids like crisps, the properties of these multiphasic, heterogeneous materials are most important in the mouth where they are broken down via mechanical, chemical or thermal means.  Unlike many structural materials where the design strategy is to achieve the highest strength or toughness, foods are designed to break down in a particular manner and only under particular condit

Prof. Jose E. Andrade to be awarded the 2006 Zienkiewicz medal

Submitted by Xuxin_Tu on
mechanician
Plasticity
finite elements
Zienkiewicz medal
shear bands
Professor Jose E. Andrade from Northwestern University is the
recipient of the 2006 Zienkiewicz medal awarded biennially by the
Institution of Civil Engineers from London. The award goes to Andrade
for his contribution entitled ' Capturing strain localization in dense
sands with random density' in IJNME 2006; 67:1531-1564 DOI:
10.1002/nme.1673 (link: http://www3.interscience.wiley.com/cgi-bin/fulltext/112519037/PDFSTART)
Our sincerest congratulations to Prof. Andrade!

modelling of friction welding process using abaqus

Submitted by venkat_dsk84 on
education

I am a postgraduate student studying in india.I am doing my project in friction welding . I have to create a finite element model of friction welding process and then simulate it to get the shortening distance.I am new to ABAQUS so help me by sening the procedure for creating a finite element model of friction welding process and then simulating it .

My E-mail address is

VENKAT_DSK84 [at] YAHOO.CO.IN (VENKAT_DSK84[at]YAHOO[dot]CO[dot]IN)

PhD position available at LGP - ENIT - Tarbes - France

Submitted by Olivier Pantalé on
job
Plasticity
finite element analysis
large deformation
swaging

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 [at] enit.fr 

3D Crack analyses using ANSYS

Submitted by Dan Sathiaraj on
3D crack analysis using ansys

i m dan doing ME Engineering Design.I m doing project in the area of probabilistic fracture mechanics.,So i need how to find SIF,J integral,Energy release rate,CDOT  for all type of crack (2D,3D)..,I want some of the material related to this..,i m using Ansys..,so complete step by step procedure in Crack analysis using analysis i want 3d Crack analysis

interface cohesive energy

Submitted by Henry Tan on
research
interface

Many people here are interested in the behaviours of interfaces.

I am interested in having a list of the cohesive energy for interfaces between different materials, such as polymer/ceramics, polymer/metals, polymer/polymer, metals/ceramics, biological interfaces, carbon nanotube/polymer matrix, etc.

So, what is the magnitude of the cohesive energy per unit area of the interface you are studying?

 

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