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Valeriy Buryachenko's picture

Critical analysis of Maxwell homogenization schemes

Paper: Buryachenko V. (2022) Critical analysis of generalized Maxwell homogenization schemes and related prospective problems. Mechanics of Materials. 165, 104181(123 refs). https://www.sciencedirect.com/science/article/pii /S0167663621003926

Nuwan Dewapriya's picture

Shock response of polymers

Our latest article “Quantum and classical molecular dynamics simulations of shocked polyurea and polyurethane” is available freely for 50 days from this URL: https://authors.elsevier.com/a/1eJem3In-urdzV

 

 

Ramathasan Thevamaran's picture

Origins of mechanical preconditioning in hierarchical nanofibrous materials

Dear Colleagues,

I invite you to read our recent paper on Origins of mechanical preconditioning in hierarchical nanofibrous materials, published in Extreme Mechanics Letters.

Abstract

Ramathasan Thevamaran's picture

Extreme Dynamic Performance of Nanofiber Mats under Supersonic Impacts Mediated by Interfacial Hydrogen Bonds

Dear Colleagues,

I invite you to read our recent paper on the Extreme Dynamic Performance of Nanofiber Mats under Supersonic Impacts Mediated by Interfacial Hydrogen Bonds published on ACS Nano.

Abstract

noyco's picture

On the consequences of cross-link dissociation in hydrogels

The submersion of a polymer network with a high density of hydrogen bond based cross-links in an aqueous bath results in the formation of a rubber-like hydrogel. The cross-links, which connect chains and maintain the structure of the network, can dissociate as a result of two main factors: (1) the interactions between the hydrogen bonds and the surrounding water molecules and (2) the forces that are exerted on the cross-link from the interconnected chains.

Teng Li's picture

EML Webinar (Season 2) on 16 December 2021 by Nanshu Lu on soft electronics for digitizing human body and human-centered robotics

EML Webinar (Season 2) on 16 December 2021 will be given by Nanshu Luonsoft electronics for digitizing human body and human-centered robotics. Discussion leader: John A. Rogers, Northwestern University

Time: 9:30 am Boston, 2:30 pm London, 10:30 pm Beijing on 16 December 2021

Antonio Papangelo's picture

Viscoelastic dissipation in repeated normal indentation of an Hertzian profile

Simple exact solutions are known for the indentation problem of a viscoelastic halfspace by a rigid sphere only as long as the contact area is growing. We consider instead a more general cyclic repeated indentation with a pulsating load with a period of zero load. We show that a combination of exact with empirical relaxation solutions coming from simple uniaxial cases is sufficiently accurate to estimate the energy dissipated per cycle, which we report for the standard ”3-elements” solid and periodic half-sine loading for various parameters.

Yaning Li's picture

Journal Club for December 2021: Bio-Inspired 3D Printed Sutures Under Shear

Bio-Inspired 3D Printed Sutures under Shear

Richard Nash and Yaning Li*

Department of Mechanical and Industrial Engineering, Northeastern University, MA

* y.li@northeastern.edu

Spectral formulation of the boundary integral equation method for antiplane problems

Spectral formulation of the boundary integral equation method for antiplane problems

Kunnath Ranjith

Abstract

Katie Matlack's picture

Review article: nonlinearity in phononic materials

FYI our review article on "exploiting nonlinearity in phononic materials to enable nonlinear wave responses" was recently published in Acta Mechanica:

https://doi.org/10.1007/s00707-021-03089-z

 

Role of Interface on the Toughening of Thermoplastic-Based Nanocomposites Reinforced with Nanofibrillated Rubber

Optimizing toughening efficiency of nanofibrillated rubber embedded in thermoplastic polymers has always been a challenge. In our work published in Nanoscale journal, by a combined MD-QM method, we demonstrate the roles of interface & interfiber interactions on the toughness and failure mechanisms of rubber-toughened polypropylene nanocomposites.

 

https://doi.org/10.1039/D1NR07363J

 

 

 

Kiana Naghibzadeh's picture

Accretion and Ablation in Deformable Solids with an Eulerian Description: Examples using the Method of Characteristics

Dear colleagues,

We invite you to see the preprint of our new paper "Accretion and Ablation in Deformable Solids with an Eulerian Description: Examples using the Method of Characteristics" which will appear in Mathematics and Mechanics of Solids. Recent work has proposed an Eulerian approach to the surface growth problem, enabling the side-stepping of the issue of constructing the reference configuration. However, this raises the complementary challenge of determining the stress response of the solid. To resolve this, the approach introduced the elastic deformation as an additional kinematic descriptor of the added material, and its evolution has been shown to be governed by a transport equation. Here, we applied the method of characteristics to solve concrete simplified problems motivated by surface growth in biomechanics and manufacturing (https://journals.sagepub.com/doi/10.1177/10812865211054573)

Wenbin Yu's picture

Global Composites Expert Webinar by Dr. Philippe Boisse

cdmHUB invites you to attend the Global Composites Experts Webinar Series. 

Title: Fibrous Shell Approach and 3D Second Gradient Modeling for Textile Composite Draping 

Speaker: Dr.  Philippe Boisse

Time: 12/9, 11AM-12PM EST.

Please go to https://bit.ly/3l6LUgT to register for this webinar.

Zeyad I Khalil's picture

A generalised phase field model for fatigue crack growth in elastic–plastic solids with an efficient monolithic solver

Dear iMechanica Community, I hope that you find the below work of interest to you - We present a generalised phase field formulation for metallic fatigue, where cyclic deformation is modelled by means of a combined non-linear kinematic/isotropic hardening law.

jyang526834's picture

Participate in the DVC Challenge 2.0

Hi all,

We at iDICs (International Digital Image Correlation Society) are thrilled to invite you to join the most recent DVC (Digital Volume Correlation) challenge! The DVC Challenge 2.0 has two sub-challenges. The first part is an interlaboratory study on the temporal stability of laboratory X-ray Computed Tomography systems. The second part is to identify available experimental and synthetic images and develop a standardized set of high-quality and other challenging datasets from different imaging modalities, which will be further used for DVC code assessment.

Cemal Basaran's picture

Predicting high cycle fatigue life with unified mechanics theory

50 days' free access to the article. Anyone clicking on this link before December 26, 2021 will be taken directly to the final version of the article on ScienceDirect, which they are welcome to read or download. No signup, registration or fees are required

Effective stiffness as a concave function of inhomogeneity properties

Hi everyone, I am a postdoc at Yale University. I am posting on some of my previous work on fiber networks and heterogeneous materials. We reported that effective stiffness is a concave function of inhomogeneity properties, and effective stiffness becomes smaller with increasing heterogeneity as an example consequence. 

 

Cemal Basaran's picture

Modeling ultrasonic vibration fatigue with unified mechanics theory

Our new paper on ultrasonic vibration fatigue [a collaboration between 4 universities & 3 countries] is available for free access until  December 21, 2021, 

 

Wei Gao's picture

Journal Club for November 2021: Machine Learning Potential for Atomistic Simulation

 

Wei Gao

Department of Mechanical Engineering, University of Texas at San Antonio

 

In this journal club, we provide a brief summary on the concept, recent progress and tools of machine learning (ML) potential for atomistic materials modelling. We hope that it could benefit to the readers who are new to this filed and plan to develop their own or use others ML potentials. Comments and disscussions are welcomed. 

 

Amir Siddiq's picture

Hydrogen damage in FCC steel single crystals

Our recent paper on predicting hydrogen damage in FCC steel single crystals. Most important thing about this paper is that the special issue is dedicated to Professor Siegfried Schmauder on his 65th birthday. Happy birthday Professor Schmauder and thanks for all your guidance, support and collaborations throughout my journey which still continues.

Teng Li's picture

EML Webinar (Season 2) on 4 November 2021 by Hanqing Jiang on origami-based metamaterials: mechanics and devices

 

EML Webinar (Season 2) on 4 November 2021 will be given by Hanqing Jiang on origami-based metamaterials: mechanics and devices. Discussion leader: Pradeep Sharma, University of Houston

Time: 10 am Boston, 3 pm London, 10 pm Beijing on 4 November 2021

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