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density functional theory

Bending moduli for forty-four select atomic monolayers from first principles

Submitted by Phanish Suryan… on

We calculate bending moduli along the principal directions for forty-four select atomic monolayers using ab initio density functional theory (DFT). Specifically, considering representative materials from each of Groups IV, III–V, V monolayers, Group IV monochalcogenides, transition metal trichalcogenides, transition metal dichalcogenides and Group III monochalcogenides, we utilize the recently developed Cyclic DFT method to calculate the bending moduli in the practically relevant but previously intractable low-curvature limit.

Large scale ab-initio simulations of dislocations

Submitted by mponga on

Dear fellow mechanicians,

I wanted to share our recent paper in Large scale ab-initio simulations of dislocations. A link with free access is provided. 

https://authors.elsevier.com/a/1aRRW508Hm3Z7

https://www.sciencedirect.com/science/article/pii/S0021999120300231?dgc…

https://arxiv.org/pdf/1907.02604.pdf

Best wishes,

Generalized stacking fault energies, ductilities, and twinnabilities of CoCrFeNi-based face-centered cubic high entropy alloys

Submitted by mohsenzaeem on

Effects of Cu, Mn, Al, Ti, Mo on generalized stacking fault energies, Rice-criterion ductilities, and twinabilities of CoCrFeNi-based face-centered cubic high entropy alloys were investigated using density functional theory calculations. The calculated barrier energies and twinnabilities revealed that the addition of Ti or Mo increased the tendency of dislocation glide and deformation twinning, while addition of Mn, Cu and relatively high amount of Al facilitated dislocation gliding and martensitic transformation. Low amount of Al resulted in only dislocation gliding.

PhD Position in Computational Nanomechanics/Materials Science at New Jersey, USA

Submitted by Dibakar Datta on

 * This is a new open position * 

The Department of Mechanical and Industrial Engineering (http://mie.njit.edu) at the New Jersey Institute of Technology (http://www.njit.edu), United States has opening for one fully funded PhD position. The position will start from Spring 2017 (January 2017)Application deadline is end of August 2016. Interested candidates are encouraged to send an email with detail CV.