research

Motivated by the recent synthesis of boron-carbon-nitride (BCN) monolayers with different atomic compositions, we propose a novel planar BCN lateral heterostructure with a combination of graphene and hexagonal boron nitride (h-BN) counterparts. Density functional theory (DFT) and classical molecular dynamics (CMD) simulations are integrated to examine the effects of defects (vacancy and Stone-Wales (SW) defects) and temperature on the physical properties of the BCN heterostructure.

Post-doctoral research associate and Graduate student openings

Submitted by mshakiba on Mon, 09/21/2020 - 15:33

A postdoctoral and graduate student openings with the main focus on the mechanics of composites materials are available immediately in Shakiba's group. We are looking for strongly motivated candidates to work on an AFOSR supported project on 1) thermo-mechanical damage coupling in FRPs, 2) simulation of additively manufactured composites and 3) sensitivity and machine learning for damage predictions.

EML Webinar by Prof. Marc Geers on September 23, 2020: Multi-scale homogenization of materials with an emergent macroscopic behaviour

Submitted by Teng Li on Fri, 09/18/2020 - 04:34

research

EML

EML Webinar

EML Webinar on 23 September 2020 will be given by Marc Geers, Eindhoven University of Technology, Discussion leader: Laurence Brassart, Oxford University.

Title: Title: Multi-scale homogenization of materials with an emergent macroscopic behaviour

Time: 7 am California, 10 am Boston, 3 pm London, 10 pm Beijing on 23 September 2020

Effect of surface topography on anisotropic friction of graphene layers

Submitted by Fan Xu on Fri, 09/18/2020 - 02:26

Tribological behavior of graphene layers has been a focus of intensive research interest since its crystal lattice structure can be exploited to achieve incommensurate contact, leading to nearly zero friction, namely structural superlubricity. However, wrinkling undulations are omnipresent on graphene and difficult to be completely eliminated, which inevitably resists superlubricity in reality. Here, we explore how the presence of surface wrinkles affects nanotribological behavior of graphene sliding systems.

The Anelastic Ericksen Problem: Universal Deformations and Universal Eigenstrains in Incompressible Nonlinear Anelasticity

Submitted by arash_yavari on Thu, 09/17/2020 - 13:23

research

Ericksen's problem consists of determining all equilibrium deformations that can be sustained solely by the application of boundary tractions for an arbitrary incompressible isotropic hyperelastic material whose stress-free configuration is geometrically flat. We generalize this by first, using a geometric formulation of this problem to show that all the known universal solutions are symmetric with respect to Lie subgroups of the special Euclidean group. Second, we extend this problem to its anelastic version, where the stress-free configuration of the body is a Riemannian manifold.

Special Issue "Advances in Elastic Micro-Structured Systems and Metamaterials"

Submitted by giorgio_carta on Thu, 09/17/2020 - 07:39

research

The Special Issue "Advances in Elastic Micro-Structured Systems and Metamaterials", that will be published in Applied Sciences (Impact Factor: 2.474), is open to receive submissions for peer-review and possible publication.

The aims and scope can be found at the following link:

https://www.mdpi.com/journal/applsci/special_issues/elastic_micro_struc…

Intricate evolutions of multiple-period post-buckling patterns in bilayers

Submitted by Fan Xu on Tue, 09/15/2020 - 08:07

Surface instability of compliant film/substrate bilayers has raised considerable interests due to its broad applications such as wrinkle-driven surface renewal and antifouling, shape-morphing for camouflaging skins, and micro/nano-scale surface patterning control. However, it is still a challenge to precisely predict and continuously trace secondary bifurcation transitions in the nonlinear post-buckling region. Here, we develop lattice models to precisely capture the nonlinear morphology evolution with multiple mode transitions that occur in the film/substrate systems.