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Zhen Yin's picture

Journal Club for October 2020: Toughening Transparent Ceramics with Bio-inspired Architectures

Toughening Transparent Ceramics with Bio-inspired Architectures

Zhen Yin (1, 2)

1 McGill University, Canada

2 Max Planck Institute for Intelligent Systems, Germany

lijianyu's picture

Journal Club for June 2020: Mechanically instructive biomaterials: a synergy of mechanics, materials and biology

 

Mechanically instructive biomaterials: a synergy of mechanics, materials and biology

Zhenwei Ma, Jianyu Li

Department of Mechanical Engineering, McGill University, Montreal, Canada

 

Teng Li's picture

EML Webinar

  • Mark your calendar: every Wednesday at 10 am Boston, 3 pm London, 10 pm Beijing.
  • Join live webinars in two ways: Zoom (for attending the lecture and participating in the discussion) or YouTube Live Stream.
  • Watch videos of past EML Webinars on YouTube or Weibo.
Teng Li's picture

EML Webinar on October 28, 2020 on Multi-scale and Trans-scale Analysis in Particle-laden Turbulence

EML Webinar on 28 October 2020 will be given by Prof. Xiaojing Zheng, Lanzhou University. Discussion leader: Prof. Yujie Wei, Institute of Mechanics, Chinese Academy of Sciences.

Title: Multi-scale and Trans-scale Analysis in Particle-laden Turbulence

Wenbin Yu's picture

Global Composites Experts Webinar by Kevin Potter

Title: Automating the lay-up of geometrically complex composite structures made from preimpregnated reinforcements: a route to a roadmap

Speaker: Dr. Kevin Potter

Time: 10/29, 11AM-12PM EST.

Please go to https://www.purdue.edu/cmsc/events/2020-webinars/ to register for this talk.

 

carpick's picture

The Mechanochemistry Discussions

Dear iMechanical Community

Jinxiong Zhou's picture

A predictive deep-learning approach for homogenization of auxetic kirigami metamaterials with randomly oriented cuts

This paper describes a data-driven approach to predict mechanical properties of auxetic kirigami metamaterials with randomly oriented cuts. The finite element method (FEM)was used to generate datasets, the convolutional neural network (CNN) was introduced to train these data, and an implicit mapping between the input orientations of cuts and the output Young’s modulus and Poisson’s ratio of the kirigami sheets was established. With this input–output relationship in hand, a quick estimation of auxetic behavior of kirigami metamaterials is straightforward.

matthew.grasinger's picture

Architected Elastomer Networks for Optimal Electromechanical Response

Dear Colleagues,

This is the preprint of an article on the design of elastomer networks for optimal electromechanical response that will appear in JMPS. We explore how various structural properties of an elastomer network (e.g. density of cross-links, fraction of loose-end monomers, orientation density of chains, etc.) affects both its bulk elastic and dielectric properties, and its performance as an actuator. (https://doi.org/10.1016/j.jmps.2020.104171).

 

Siddiq Qidwai's picture

NSF: Mechanics of Materials and Structures (MoMS) Program Listserv

Dear US Academic Researchers,

If you want to get on to the announcement listserv dedicated to the Mechanics of Materials & Structures (MoMS) program at the National Sciecne Foundation, then perform this task:

Send an email to listserv@listserv.nsf.gov with the message

subscribe MOMS Full_Name

e.g., subscribe MoMS John Smith

mohsenzaeem's picture

Phase-field modeling of crack propagation in polycrystalline materials

A phase-field model based on a modified form of the regularized formulation of Griffith’s fracture theory is presented to investigate intergranular and transgranular crack propagations in polycrystalline brittle materials. Grains and grain boundaries are incorporated in the crack initiation and propagation model based on a phase-field model for grain growth, in which the elastic anisotropy varies based on the grain orientation angle, and the grain boundary energy is related to the misorientation angle of the adjacent grains.

Wenbin Yu's picture

Global Composites Experts Webinar by Ken L Reifsnider

Title: Direct coupling predicting the strength and life of fiberous composite laminates

Speaker: Dr. Ken L Reifsnider

Time: 10/8, 11AM-12PM EST.

Please go to https://www.purdue.edu/cmsc/events/2020-webinars/ to register for this talk.

mohsenzaeem's picture

A new planner BCN lateral heterostructure with outstanding strength and defect-mediated superior semiconducting to conducting properties

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.

mshakiba's picture

Post-doctoral research associate and Graduate student openings

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.

Fan Xu's picture

Effect of surface topography on anisotropic friction of graphene layers

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.

Arash_Yavari's picture

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

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.

giorgio_carta's picture

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

 

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:

Fan Xu's picture

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

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.

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