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Deformation gradients and atomistic simulations

Submitted by Biswajit Banerjee on
research
Plasticity

I came upon a recent paper called "Deformation gradients for continuum mechanical analysis of atomistic simulations" by Jonathan A. Zimmerman , Douglas J. Bammann,  and Huajian Gao, International Journal of Solids and Structures 46 (2009) 238–253 where the authors conclude with

Complicated rotor dynamic simulation with ANSYS/ABAQUS or Madyn 2000

Submitted by phamhuytuan on
3D dynamic simulation

 

I have a system as in the Figure. There will have a radial load and a lateral load acting on the circumference of the drum which rotate at around 1000 rpm. I want to investigate the stability of the shaft at this speed. Can ANSYS or ABAQUS simulate this kind of dynamic simulation or is there any other software can solve my problem.

Thank you.

About estimating limit load using elastic-perfectly plastic material

Submitted by Y. Wang on
Forums
Fracture Mechanics Forum

Hello everyone. I have gotten this question for a long time.



As we all know, people are using elastic–perfectly plastic material to estimate the limit load for a specimen (structure). If the plastic zone is throughout the ligament as the load is increased, we say that the load is now reaching the limit load.



Combined EAM and Stillinger-Weber potential and Combined EAM and Tersoff Potential

Submitted by Anonymous (not verified) on
research
molecular dynamics
interatomic potentials
phase diagrams

We have combined the EAM and the SW and the TF potentials in one functional form. This functional form allows the modeling of metal covalent systems (M-Si,Ge,C,SiC) very efficiently allowing the study of large systems. The potential iscalled as the "Angular-dependent Embedded Atom Method".

 

 

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