research

Affine Development of Closed Curves in Weitzenbock Manifolds and the Burgers Vector of Dislocation Mechanics

Submitted by arash_yavari on Fri, 09/14/2012 - 17:47

In the theory of dislocations, the Burgers vector is usually defined by referring to a crystal structure. Using the notion of affine development of curves on a differential manifold with a connection, we give a differential geometric definition of the Burgers vector directly in the continuum setting, without making use of an underlying crystal structure.

NUMBER OF EIGENVALUES FOUND ON THE INTERVAL EXCEEDS THE EXPECTED NUMBER.

Submitted by somusshabadi on Fri, 09/14/2012 - 13:28

Negative Eigen Values

Hello Experts,

I am trying to extract the eigenvalues of the User-Defined Element. I am getting following error when I try to extract frequencies using Lanczos method

*Frequency, eigensolver=Lanczos, acoustic coupling=off, normalization=displacement

3,,,, , ,

Please help me to resolve this error. Please find the message file in attachment.

Electromechanical instability and snap-through instability of dielectric elastomers undergoing polarization saturation

Submitted by Bo Li on Fri, 09/14/2012 - 01:44

research

dielectric elastomer

instability

polarization saturation

Thermal fatigue tutorials in Abaqus

Submitted by dipakjha on Wed, 09/12/2012 - 05:17

research

Sir/Madam,

Could you send me thermal fatigue tutorials in Abaqus ?please any one have thermal fatigue tutorials,please help me.Please send me any languague of tutorials.If it is tutorials in english ,it had better for me.

Thank you.

WithRegards,

Deepak jha

A crystal plasticity continuum theory with length scale dependent internal residual stress and free surface effect

Submitted by RaminBabaei on Wed, 09/12/2012 - 02:53

research

Crystal plasticity

Geometrically Necessary Dislocation Density

Nonlocal continuum theory

Internal stress

Free surface

The long range elastic interaction between dislocations is naturally accounted in
discrete dislocation plasticity through stress field of individual dislocation.
In addition, the dislocation boundaries elastic interaction is considered via
image stress superposition approach in the finite element framework. In current
study these interaction terms are considered in crystal plasticity framework
through length scale dependent internal residual stresses which are arise from

Large conversion of energy in dielectric elastomers by electromechanical phase transition

Submitted by tongqing.lu on Tue, 09/11/2012 - 14:47

electromechanical phase transition

bulge

Initiating in hybrid composite research?

Submitted by karan dhanjal on Tue, 09/11/2012 - 03:35

research

HYBRID COMPOSITES

hello everyone..i am a beginner in this field so ultimately seek help in order to escalate in my research.Currently i am working on hybrid composites using graphite filled FRPCs so kindly encourage me and help me make up my mind for better understanding in order to have an effective research.I am concentrating on tribological properties and if there is anything i can possibly implement to make it more profound please guide me so.I am working on my theoratical thesis right now.

Bending Behavior of Functionally Graded Plates; Including Surface Effects

Submitted by M. Shaat on Sun, 09/09/2012 - 22:00

research

Simple metal cutting example with chip formation in ABAQUS

Submitted by Borad M Barkachary on Sat, 09/08/2012 - 20:34

research

User subroutines in ABAQUS

Hello every one....

I am new in abaqus/cae, abaqus/explicit. I have googled but not able to get any tutorial or example for metal cutting with chip formation. just few youtube animation videos are available on 3D orthogonal cutting, milling. But now such video or doc is available.

So, if any one having any kind of tutorial, example, or short notes.. please please share with me or mail me on my ID badwl24 [at] yahoo.com.