research

Prof. Xiaodong Li and I are collaborating in identifying those physical mechanisms that govern the mechanical properties of nanomaterials. Recently, we have a manuscript accepted by the Journal of Applied Physics and would like to share it with you.

As a complement to the current issue of journal club, I would like to bring your attention to our current work on dielectric elastomers. 

I am working on pipeline crack detection simualtion using Ansys. since wave propagation is a transient analysis and I have never used Ansys for this kind of simulation. Help me out if you know any source where I can take it as a reference and start my simulation.

Thanks

Phys. Rev. B 78, 155436 (2008)   J.Y. Huang, F. Ding, B.I. Yakobson

 Recently, enlightened by the definition of inverse pole figure in Materials Science, I proposed an inverse-pole-figure (IPF) method for analysis of domain switching in polycrystalline ferroelectrics/ferroelastics.

I am quite new to ABAQUS and trying to model structural masonry.I am facing difficulties in defining material property and analysis procedure.I was wondering if anybody has worked on this particular area and provide me with some useful resources.

 Any Help in this regard will be highly appreciated

Thanks and Regards,

Dhruba

We have studied the scaling of controlled nonlinear buckling processes in materials with dimensions in the molecular range (i.e., ～1 nm) through experimental and theoretical studies of buckling in individual single-wall carbon nanotubes on substrates of poly(dimethylsiloxane). The results show not only the ability to create and manipulate patterns of buckling at these molecular scales, but also, that analytical continuum mechanics theory can explain, quantitatively, all measurable aspects of this system.

PRL 101, 145501 (2008)      http://www.nature.com/news/2008/081010/full/news.2008.1164.html, http://www.sciencenews.org/view/generic/id/34974/title/Carbon_tubes,_but...

Dear Prof. Dolbow

 In your 1D efg program, you have used u=d(1:nnodes). I think, you should calculate "u" by summing after multiplying with the shape functions and "d". Because in the figure 2 phi(x) is not equal to one at the node. Phi(x) satisfies the partition of unity.

Please clearify my doubt if I am wrong.

Best regards

krishna

venkatakrishnaraop@gmail.com   

Can anyone provide some guidelines regarding  CFD based aeroelasticity? And if possible some references as well.  

HI Every Body

 I am postgraduate student of NavalArchitecture, My thesis is Fatigue Crack Propagation in ship Industry, I want to use Ansys Software for this purpose, at first I generated a plate with a central Crack and did fine mesh around crack and saw the results, for next step I should propagate the crack, my questions are as below:

1. How we can predict the Crack path?

2. how should I growth the crack? shall I clear mesh and extend the crack or.....???? I don't know?

3. How Can I use from Interface Elements?

 Thanks in advance

Physical Review Letters (Vol.101, No.17):175501

Highlighted by Nature, 465, 5 

Highlighted by Nature Nanotechnology, 31 Oct 2008

Highlighted by NatureChina, 5 Nov 2008