Category:MDDP

Multiscale Dislocation Dynamics Plasticity (MDDP) is a discrete dislocation dynamics (DD) model for crystalline materials coupled by finite element (FE) analysis developed by Hussein M. Zbib and colleagues ^[1].

MDDP simulations can run for calibration of data upscaled from atomistic scale calculations. It is run from an executable and requires two input files. For example, for modeling crystal plasticity in aluminum, the code MDDP can be used to calibrate values of dislocation mobility determined from molecular dynamics simulations. Stress-strain curve data can then be used to upscale to the mesoscale crystal plasticity length scale ^{[2] [3]}.

For additional information regarding MDDP, please view the MDDP Manual.

Input Files

The input files for MDDP can be found by clicking here. To run the simulation follow the instructions found on the Frank Read Source Operation page.

Post-Processing

Tecplot ^[4] is a post-processing software that can be used to view MDDP simulation outputs. It can be used to view the evolution of the dislocation structure, as well as produce curves, such as stress-strain curves. Step-by-step post-processing information can be found here

Evolution of Dislocation Structure of Aluminum using Tecplot

References

1. ↑ Zbib, H.M., Shehadeh, M., Khan, S.M.A., and Karami, G. "Multiscale Dislocation Dynamics Plasticity" School Of Mechanical and Materials Engineering, Washington State University Multiscale Dislocation Dynamics Plasticity
2. ↑ Horstemeyer, Mark F. Integrated Computational Materials Engineering (ICME) for Metals: Using Multiscale Modeling to Invigorate Engineering Design with Science. John Wiley & Sons, Inc., 2012
3. ↑ S. Groh, E. B. Marin, M. F. Horstemeyer, and H. M. Zbib. Multiscale modeling of the plasticity in an aluminum single crystal. Int. J. of Plasticity, 25, pp. 1456-1473, 2009
4. ↑ Tecplot