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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.

EML Webinar by Prof. Ellen Kuhl on 12 August 2020: Data-driven modeling of COVID-19—Lessons learned

Submitted by Teng Li on

EML Webinar on 12 August 2020 will be given by Professor Ellen Kuhl, Standard University via Zoom meeting. Discussion leader: Professor Pradeep Sharma, University of Houston.

Title: Data-driven modeling of COVID-19—Lessons learned

Time: 7 am California, 10 am Boston, 3 pm London, 10 pm Beijing on 12 August 2020

Ever wonder what the modes of vibration of a rod contacting a surface look like?

Submitted by oliver oreilly on

Dear Colleague,

Our latest work on the dynamics of rods contacting rigid surfaces has just appeared:

N. N. Goldberg and O. M. O'Reilly, On contact point motion in the vibration of elastic rods, Journal of Sound and Vibration, 2020. 

Mechanics at the interfaces of 2D materials

Submitted by Zhaohe Dai on

Dear iMechanica researchers,

I'd like to share an opinion paper that was written by Rui Huang, Kenneth Liechti, Nanshu Lu, and I for Current Opinion in Solid State & Materials Science. The aim is to discuss the mechanics research on 2D material interfaces in terms of recent developments and appeared challenges and opportunities. Here is the link; Below, I also attached a copy of the manuscript and pasted the Abstract.

Electroadhesive sphere-flat contact problem

Submitted by Antonio Papangelo on

The electroadhesive contact between a conductive sphere with a rigid substrate, both coated with an electrically insulating layer is studied, by adopting two solution strategies: (i) a DMT approximation and (ii) an iterative finite element model which accounts for the effect of the electroadhesive tractions on the deformation of the elastic solids. The contact problem is solved by varying the applied voltage and the elastic modulus of the coating layer.

A finite strain model predicts oblique wrinkles in stretched anisotropic films

Submitted by Fan Xu on

Transverse wrinkles commonly occur in a uniaxially tensile elastic membrane and can vanish upon excess stretching. The wrinkling direction is usually perpendicular to the stretching direction under isotropic elasticity. Here, we show that wrinkles are orientable by material anisotropy, such as in fiber-reinforced or fibrous films, and the wrinkling orientation can be tuned by varying the stiffness and direction of fibers.

A Postdoctoral Research Associate Position at the University of Wisconsin-Madison

Submitted by Ramathasan The… on

A Postdoctoral Research Associate Position is available (Fall 2020) in Professor R. Thevamaran’s laboratory at the Department of Engineering Physics of the University of Wisconsin-Madison to study the dynamic behavior of hierarchical materials.

EML Webinar by Prof. Taher Saif on 5 August 2020: Living robotics

Submitted by Teng Li on

EML Webinar on 5 August 2020 will be given by Professor Taher Saif, the University of Illinois at Urbana-Champaign via Zoom meeting. Discussion leader: Professor Yuhang Hu, Georgia Tech.

Title: Living Robotics

Time: 7 am California, 10 am Boston, 3 pm London, 10 pm Beijing on 5 August, 2020

Phononic canonical quasicrystalline waveguides

Submitted by Massimiliano Gei on

I am glad to present a recent set of papers highlighting the noteworthy properties of 1D periodic waveguides generated by a quasicrystalline sequence. The concept of canonical configuration explains how to obtain a periodic frequency spectrum and why this outcome is connected to trace mapping:  

-->M. Gei, Z. Chen, F. Bosi, L. Morini (2020) Appl. Phys. Lett. 116, 241903 - https://doi.org/10.1063/5.0013528