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Fan Xu's picture

Nanosleeves: Morphology transitions of infilled carbon nanotubes

Morphology instability of substrate-supported carbon atomic layers can be harnessed to modulate physical properties and functions, which has drawn interesting attention. Curvature would be a critical factor affecting surface morphology and its stability characteristics. Infilled carbon nanotubes, that is to say carbon monolayers with curved geometry and infilled substrates, namely nanosleeves, widely exist in the literature and have many potential applications.

Antonio Papangelo's picture

Stickiness of randomly rough surfaces with high fractal dimension: is there a fractal limit?

Two surfaces are ”sticky” if breaking their mutual contact requires a finite tensile force. At low fractal dimensions D, there is consensus stickiness does not depend on the upper truncation frequency of roughness spectrum (or ”magnification”). As debate is still open for the case at high D, we exploit BAM theory of Ciavarella and Persson-Tosatti theory, to derive criteria for all fractal dimensions. For high D, we show that stickiness is more influenced by short wavelength roughness with respect to the low D case.

Special issue in EABE - "Advanced numerical modelling in geotechnical engineering"

Dear All,

We cordially invite you to submit a manuscript for consideration and possible publication in the special issue on "Advanced numerical modelling in geotechnical engineering" in Engineering Analysis with Boundary Elements (IF=2.884).

This special issue aims to address following topics:

1. Data-driven simulation with field monitoring or experiments.

Journal of Micromechanics and Molecular Physics (JMMP) Starts Several Special Issues

 

Dear Applied Mechanics and Materials Community:

 

Journal of Micromechanics and Molecular Physics (JMMP) starts six special issues in 2021

 

https://mp.weixin.qq.com/s/KR4efNXHhOW6DQw_MUNAAw

 

We are cordialy inviting contributions from all members of 

applied mechanics community.

 

With World Scientific Publication Co.,  we are working to make JMMP a high-impact

Hai Dong's picture

A novel hyperelastic model for bio-tissues & a 2nd kind of Poisson effect

Constitutive models are of fundamental importance to many biomedical problems such as the rupture prediction of aortic aneurysms. Existing structure-based constitutive models such as the widely used Gasser–Ogden–Holzapfel (GOH) model usually need to specify the number of fiber family which may be difficult to identify for many kinds of tissues. In this study, we developed a novel hyperelastic model for biological tissues by considering a fiber distribution as a whole distribution which does not need the information of the number of fiber family.

Xavier Morelle's picture

Anti-icing propylene-glycol materials

Dear fellow iMechanicians,

Here is our recent paper published in EML on novel anti-icing materials based on propylene-glycol (PG) gels. This work was performed in collaboration with Xi Yao, Baohong Chen and myself while working in Zhigang Suo's lab at Harvard, and provides new solutions for anti-icing purposes (i.e. throug blankets design) without large and costly release of PG in the environment.

Anti-icing propylene glycol materials

Xi Yao, Baohong Chen, Xavier P. Morelle and Zhigang Suo*

Zhaohe Dai's picture

Poking/pressurizing thin elastic sheets with sliding boundaries

Dear iMechanicians, I would like to share our recent work on the poking and bulging of elastic thin sheets that were inspired by the classical indentation test and bulge test. Under clamped boundaries, there have been well-established theories and well-controlled experiments in this field.

Oscar Lopez-Pamies's picture

The poker-chip experiments of Gent and Lindley (1959) explained

Despite being commonly credited with initiating the field of cavitation in elastomers, the famed poker-chip experiments of Gent and Lindley (1959) have yet to be fully explained. One likely reason for their elusiveness is that it had long been presumed that cavitation in elastomers was a phenomenon that could be explained solely on the basis of the elasticity of the elastomer at hand.

University-Academia Partnership- 2 positions in Computational Mechanics A postdoc and a Senior PhD Interns)

Computational Mechanics and Modeling of Composites,  fracture, large deformation, machine learning, heat transfer in polymers  

  

oliver oreilly's picture

Vibrations + Contact = Quadratic Nonlinearity

Hello,

Studies of the vibration of a rod in contact with a surface are central to a range of applications from MEMS devices to flexible ocean risers. In our latest paper,

Nate N. Goldberg and Oliver M. O'Reilly Pervasive nonlinear vibrations due to rod-obstacle contact, Nonlinear Dynamics, 2021

Wenbin Yu's picture

Structure Genome: a Unified Multiscale Approach to Bridging Materials Genome and Structural Analysis

After almost seven years development, we have achieved more and more clarity with the concept of structure gene and it governing principles (mechanics of structure genome). My recent talk on MSG summarizes its relations with materials genome, common structural theories, micromechanics, multiscale modeling, as well as its current application to deployable structures, homogeneous 3D elements, machine learning assisted multiscale modeling. You can watch this talk at Youtube https://www.youtube.com/watch?v=7d5LuQrLpCM&t=5s.

Cemal Basaran's picture

Introduction to Unified Mechanics Theory with Applications

If you are interested in learning more about te Unified Mechanics Theory

my book is out in .pdf format.  I welcome any comments (good and bad :-))

https://www.springer.com/us/book/9783030577711#otherversion=9783030577728

Summary of the book: 

zhan-sheng guo's picture

Analytical Model and Experimental Verification of the Interfacial Peeling Strength of Electrodes

Background

The interfacial peeling strength of lithium-ion battery electrodes is a very important mechanical property that significantly affects the electrochemical performance of battery cells.

Objective

To characterize the interfacial peeling strength of an electrode, an analytical model based on the energy balance principle is established by considering the state of charge (SOC), the energy release rate, the tensile stiffness, and the peeling angle.

Methods

Jinxiong Zhou's picture

Achieving selective snapping-back and enhanced hysteresis in soft mechanical metamaterials via fibre reinforcement

When a soft mechanical metamaterial, consisting of a regular array of representative volume elements (RVE), is stressed up to a large strain, the delicately tailored behavior of the RVE does not prevail in the metamaterial due to boundary effect and manufacturing imperfections.

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