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Journal Club Theme of July 2015: Reconfigurable metamaterials -- putting the holes in the right place

Reconfigurable metamaterials -- putting the holes in the right place

 

Shu Yang1 and Jie Yin2

1Department of Materials Science and Engineering, University of Pennsylvania, E-mail: shuyang@seas.upenn.edu

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jansen's picture

PhD Candidate Positions in Analysis of Composite Structures at University of Hannover

Two Ph.D. candidate positions are available at the Institute of Structural Analysis (ISD) of Leibniz Universität Hannover within the H2020 Marie Sklodowska-Curie European Training Network project FULLCOMP - FULLy integrated analysis, design, manufacturing and health-monitoring of COMPosite structures.

 

mohsenzaeem's picture

Two PhD positions are available immediately - Computational Materials & Mechanics

Two PhD positions are available immediately in the Computational Materials & Mechanics Laboratory at Missouri University of Science and Technology (Rolla), http://web.mst.edu/~aslezaeemm/:

1. Multi-phase field modeling: defect formation and evolution during dendritic solidification of aluminum alloys

2. Molecular dynamics simulations of properties of oxides

 

rohan_patel8388's picture

Temperature Dependent CTE (coefficient of thermal expansion)

Hello People,

Would anyone please tell me or provide any documentation for how to find Temperature Dependent CTE (coefficient of thermal expansion) or modulus of elasticity? I have water which is encapsulated in box made of steel and which goes under freezing process and water expands. 

So i need any mathematic relations for water and metal as well to fine CTE.

Thanking you,

Rohan

Noel ODowd's picture

2 Post Doctoral researcher positions in Computational Mechanics of Materials

Two post doctoral positions are available at the University of Limerick, Ireland. The object of the research, which is funded by Science Foundation Ireland (SFI), is to obtain an understanding of the mechanical behaviour of ferritic and martensitic steels at the micron and sub-micron scale and to link this behaviour to component behaviour. The work will involve computational and experimental studies of material behaviour using a range of numerical and experimental techniques.

Eran Bouchbinder's picture

Dynamic instabilities of frictional sliding at a bimaterial interface

Understanding the dynamic stability of bodies in frictional contact steadily sliding one over the other is of basic interest in various disciplines such as physics, solid mechanics, materials science and geophysics. Here we report on a two-dimensional linear stability analysis of a deformable solid of a finite height H, steadily sliding on top of a rigid solid within a generic rate-and-state friction type constitutive framework, fully accounting for elastodynamic effects.

Details about hydrogel mechanical test

Dear all,

I have some questions about hydrogel mechanical test. After curing, should i put samples in water (submerge in water) or not? I found there's big difference between same samples with different water content. Also, I can't get the tentile strength similar with literature with same materials. My tensile stress is more than 10 times smaller. I really don't know what did I miss.

I would greatly appreciate any help. Thank you!

 

shawnchester's picture

Positions available in the mechanics of polymers

Two positions at the PhD level are available in solid mechanics in my group in the Mechanical and Industrial Engineering Department at the New Jersey Institute of Technology.  I'm looking for motivated students in the area of solid mechanics and materials, with specific application to the multiphysics behavior of polymeric materials.  A few key areas are polymeric gels, thermo-mechanics of polymers, shape-memory polymers, chemical reactions occurring in a deforming polymer, and so on.  Research topics are broad and cover the full range of theoretical, numerical, and experimental aspects.

Mario Juha's picture

Large-eddy simulation with near-wall modeling using weakly enforced no-slip boundary conditions

In the present paper, weakly enforced no-slip wall boundary conditions are revisited in the context of Large-Eddy Simulations (LES) with near-wall modeling. A new formulation is proposed in the framework of weakly enforced no-slip conditions that is better aligned with traditional near-wall modeling approaches than its predecessors.

Design Methods for Superior Cavitation Performance Pump Impellers and Inducers Webinar | 29 July

A live demonstration and presentation on how 3D Inverse Design method supports leading pump and manufacturers develop high suction performance products without sacrificing efficiency.

Lihua Jin's picture

Syringe-injectable electronics

Seamless and minimally invasive three-dimensional interpenetration of electronics within artificial or natural structures could allow for continuous monitoring and manipulation of their properties. Flexible electronics provide a means for conforming electronics to non-planar surfaces, yet targeted delivery of flexible electronics to internal regions remains difficult.

Sung Hoon Kang's picture

Design of planar isotropic negative Poisson’s ratio structures

Most of the auxetic materials that have been characterized experimentally or studied analytically are anisotropic and this limits their possible applications, as they need to be carefully oriented during operation. Here, through a combined numerical and experimental approach, we demonstrate that 2D auxetic materials with isotropic response can be easily realized by perforating a sheet with elongated cuts arranged to form a periodic pattern with either six-fold or three-fold symmetry.

Opening for Senior Engineer in BD Corporate CAE Group

The Corporate CAE group for Becton Dickinson is looking for a CAE Senior Engineer at the Research Triangle Park, NC USA location (Raleigh-Durham area).

Bent F. Sørensen's picture

20th International Conference on Composite Materials in Copenhagen, 19-24 July 2015

The The Preliminary Program is now ready here on the website

www.iccm20.org

You can still registrer for the conference. 

We send out invitations directly to those of you who have registrered so that you can join our LinkedIn Group. Here you can post a discussion, find new connections and start getting ready for the ICCM20. Hope to see you in Copenhagen soon!

 

Opening for new Ph.D. students in the Computational Mechanics group, The University of Iowa.

The Computational Mechanics group at The University of Iowa, led by Professor S. Rahman, is looking for new Ph.D. students, who are capable of and interested in performing high-quality research on engineering design. The research, supported by National Science Foundation and others, entails building a solid mathematical foundation, devising efficient numerical algorithms, and developing practical computational tools for stochastic design optimization. A substantial background in solid mechanics and structural optimization is a must; exposures to stochastics and probabilistic methods are highly desirable.

If you are interested in pursuing a Ph.D. degree at Iowa, please contact and send a resume to: Professor Sharif Rahman at sharif-rahman@uiowa.edu. Please note that we are interested in students who already have M.S. degrees in engineering or mathematics. The desired start date is Spring 2016 or sooner.

Opening for new Ph.D. students in the Computational Mechanics group, The University of Iowa.

The Computational Mechanics group at The University of Iowa, led by Professor S. Rahman, is looking for new Ph.D. students, who are capable of and interested in performing high-quality research on engineering design. The research, supported by National Science Foundation and others, entails building a solid mathematical foundation, devising efficient numerical algorithms, and developing practical computational tools for stochastic design optimization. A substantial background in solid mechanics and structural optimization is a must; exposures to stochastics and probabilistic methods are highly desirable.

If you are interested in pursuing a Ph.D. degree at Iowa, please contact and send a resume to: Professor Sharif Rahman at sharif-rahman@uiowa.edu. Please note that we are interested in students who already have M.S. degrees in engineering or mathematics. The desired start date is Spring 2016 or sooner.

katrin schulz's picture

PhD or Postdoc position in Materials Mechanics/Numerics/Statistical Physics

Development of advanced materials for high-end applications is driven by the increasing understanding of the dynamics and properties of defect microstructures, leading to the ability to synthesize and control materials microstructures to meet specific application demands. Dislocation motion is the fundamental physical mechanism of the plastic deformation process in crystalline materials.

Dincoz's picture

what is the reason for Large element deformation?

Hi my Friends,

I am doing abaqus run for a copper specimen under hydrostatic pressure. The magnetude of pressure is in order of several Giga Pascals. In my material definition, I have defined stress-strain flow up to strain of 0.4. But as you can see in attached photo, some elements show very large deformation (considerably larger than 0.4). Knowing that I have not defined stress strain behaviour for srain greater than 0.4, how this can be occure? Unfortunately, niether adaptive meshing nor element deletation were not eliminate this issue!!

 

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