iMechanica - nanocrystalline materials - Comments

Hi Sandip

Ajing Cao — Wed, 08 Aug 2007 18:20:22 -0400

The code I used is modified version of Paradyn, which is originally developed by S. Plimpton at Sandia National Lab. Lampps is also a powerful package and many people use it. Wish you good luck.

Hi Ajing, I have started

Sandip Haldar — Wed, 08 Aug 2007 11:08:08 -0400

Hi Ajing,

I have started working in Molecular simulation. In your work what are you using for simulation i.e. any package or your own code? I am learning LAMMPS.

Sandip Haldar

Hi De

Ajing Cao — Tue, 07 Aug 2007 21:12:24 -0400

Hi De,

I didn't model nanocrystalline metals by using Finite Element Methoed since the physics governing the deformation is still not well understood. We currently focus on revealling the atomic level physics of the deformation process of nanocrystalline metals with such tiny grain size. With these fundamental understandings, we will try to use the physics-based multiscale model (FEM also) to predict the mechanical properties of these materials.

Do you have some suggestions on fracture modelling by using FEM? Thanks!

I mentioned a reference which used the FEM to model the nanocrystalline metals combined the grain boundary seperation with grain interrior plasticity: Y. J. Wei and L. Anand, J. Mech. Phys. Solids 52, 2587 (2004).

A question?

De Xie — Tue, 07 Aug 2007 01:17:17 -0400

Congrats for the pubilication!

When I look at those pictures. A quick question comes into my mind:

Did you use any Finite Element Analysis for your simulation?

Thanks.