Next Thursday, 12.05 at 11:00 am, we will have a FH seminar where Prof. Dan Mordehai from Technion - Israel Institute of Technology will give a lecture titled "Mechanical properties of materials- what can we learn using molecular dynamics simulations?". See the details in the file attached.
Please note that the lecture will be held at the Los Angeles lecture hall.
 
Microstructural lattice defects on the atomic level are known to be responsible to the
macroscopic deformation of metals. Despite, studying mechanical properties of materials
using microstructural-based rules is still a great challenge owing to the multiphysics and
multiscale nature of the problem. While molecular dynamics (MD) simulations naturally
capture the dynamic properties of lattice defects, using them to solve engineering problems is
still unrealistic, and one should find ways to bridge between simulation techniques of different
times- and length-scales. In this talk, I will overview the activity of our group at the Technion
in recent years, in our quest to study mechanical properties of materials, starting from the
atomic scale. I will briefly present several examples on how we obtain information from the
atomic scale and detail different sequential multiscale strategies we used to study the
deformation of nanoparticles, nanowires, nanoporous metals and carbon nanotubes. In the
second part of the talk, I will focus on modelling shock-induced plasticity in body-centered
cubic metals. In the model, the properties of dislocations, lattice defects that are the main
carriers of plasticity, are obtained from MD simulations, and are given as an input to a
continuum model. In particular, I will demonstrate how we employ MD simulations to
calculate the activation parameters for dislocation nucleation using a varying driving force.