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Periodic boundary condition on non-rectangular RVE

Dear friends,
Hi. I'm working on multiscale modeling of soft tissues. For micromechanical modeling of the tissue i consider an RVE with sinusoidal edges as figure 1. 

I imposed periodic boundary conditions on the RVE using corner nodes as master nodes and define the displacement of the other nodes on the boundary related to these master nodes displacements using constraint equations as figure 2.

 

martin.levesque's picture

Post-doctoral position at Polytechnique Montréal in the simulation of the shot peening process

Dear All

I am currently looking for post-doctoral candidates to work on the simulation of the shot peening process by coupling discrete and dynamic finite element simulations. This is a two-year position. The project is in collaboration with 4 major aerospace companies and involved 6 other PhDs and 2 PDFs. 

The applicants should have a very strong background in computational mechanics.

Please send me:

Shuze Zhu's picture

Pseudomagnetic Fields in a Locally Strained Graphene Drumhead

Recent experiments reveal that a scanning tunneling microscopy (STM) probe tip can generate a highly localized strain field in a graphene drumhead, which in turn leads to pseudomagnetic fields in the graphene that can spatially confine graphene charge carriers in a way similar to a lithographically defined quantum dot (QD). While these experimental findings are intriguing, their further implementation in nanoelectronic devices hinges upon the knowledge of key underpinning parameters, which still remain elusive.

Variation of Stress with Charging Rate due to Strain-Rate Sensitivity of Silicon Electrodes of Lithium Ion Batteries

Silicon is a promising anode material for lithium-ion batteries due to its enormous theoretical energy density. Fracture during electrochemical cycling has limited the practical viability of silicon electrodes, but recent studies indicate that fracture can be prevented by taking advantage of lithiation-induced plasticity. In this paper, we provide experimental insight into the nature of plasticity in amorphous LixSi thin films. To do so, we vary the rate of lithiation of amorphous silicon thin films and simultaneously measure stresses.

vicky.nguyen's picture

Postdoc position in computational mechanics at the ME Department, Johns Hopkins University

Description:  Postdoc position in computational biomechanics in the Mechanical Engineering Department at Johns Hopkins University

jkruzic's picture

Two postdoctoral positions in Mechanics of Materials at Oregon State University

We are seeking to fill two postdoctoral scholar positions at Oregon State University. The ideal candidates will have expertise in one or more of the following: computational materials science, granular mechanics, solid mechanics, and/or mechanical testing of materials. Positions will initially be for 1 year with an anticipated starting date of January 1st, 2015, with the possibility to continue for a second year depending on performance and continued funding.

The successful candidates will:

I am looking for values of the displacement at failure or Fracture energy of Al2024-T3 alloy

Hi All,

Does anyone have the values for the fractrue energy or/and displacement at failure for Al2024-T3, I am trying to find them for my simulations.

 

Many thanks

 

 

Likun Tan's picture

Looking for Postdoctoral Position

Dear imechanica members,

My name is Likun and I am posting this blog in searching for postdoctoral positions in Computational Solid Mechanics.

I obtained Ph.D. in Computational Mechanics at Carnegie Mellon University. My thesis work involves developing multiscale method for retrieving slow-time scale behavior from molecular dynamics.

I also have several years' research experience in multiscale analysis and phase-field modeling of hysteresitic behaviror in active materials.  

Seek program or software for 3d crack propagation in soft tissue

Dear all,

I am looking for a program or software, which allow me to have a quick example for demostrating 3d crack propagation in soft tissue. Can someone share your suggestion on that? At the same time, some references related are also appreciated. Thanks a lot in advance. 

Best wishes,

Lei

 

2015 Summer Biomechanics Bioengineering and Biotransport Meeting

<p>Please join us at the Summer Biomechanics, Bioengineering and Biotransport Conference (SB3C2015), to be held at beautiful Snowbird Utah, July 17-20, 2015 (http://www.snowbird.com). The theme of the conference this year is <strong> Synergy of Modeling and Experiments in Biomechanics, Bioengineering and Biotransport </strong>.

Leon Mishnaevsky's picture

Micromechanics of hierarchical materials: a brief overview

A short overview of micromechanical models of hierarchical materials (hybrid composites, biomaterials, fractal materials, etc.) is given. Several examples of the modeling of strength and damage in hierarchical materials are summarized, among them, 3D FE model of hybrid composites with nanoengineered matrix, fiber bundle model of UD composites with hierarchically clustered fibers and 3D multilevel model of wood considered as a gradient, cellular material with layered composite cell walls.

Wuhan University International Forum for Interdisciplinary Sciences and Engineering

Choose a channel featured in the header of iMechanica: 

Wuhan University International Forum for Interdisciplinary Sciences and Engineering December 28 – 30, 2014 Wuhan, China Organizer: Wuhan University 1. About the Forum Wuhan University International Forum for Interdisciplinary Sciences and Engineering is providing a platform for prominent young talents at home and abroad to enhance brainstorming and cross-disciplinary exchange, and advance interdisciplinary sciences and collaborative innovation, with the goal to explore the frontier issues in sciences and build a sustainable future for our society.

Davide Bigoni's picture

Torsional locomotion

Can a torque induce longitudinal motion of an elastic rod?

See the explanation and an example of use of the 'torsional gun' at http://www.ing.unitn.it/~bigoni/torsional_locomotion.html

If you're having trouble playing videos on YouTube, click here to watch it.

abedford's picture

Hamilton's principle

I continue to receive inquiries about the monograph Hamilton's Principle in Continuum Mechanics, published in 1985 as Research Notes in Mathematics No. 139 by Pitman Publishing, Ltd. Now out of print, it is in the public domain and is attached here. My initial objective in writing it was to discuss the theoretical foundations of the applications of Hamilton's principle to mixtures that I had developed with D. S. Drumheller and others during the preceding decade.

Call for Abstracts; EMI 2015 Stanford

Dear colleagues,

We cordially invite you to submit your contributions to the following minisymposium: Multiscale Modeling and Simulation of Fracture and Fragmentation Processes taking place as part of the Engineering Mechanics Institute conference (JUne 16-19, 2015) at Stanford.

Best Regards,

Ahmed Elbanna*, University of Illinois at Urbana Champaign, USA
Glaucio Paulino, University of Illinois at Urbana Champaign, USA

MS 54: Multiscale Modeling and Simulation of Fracture and Fragmentation Processes

postdoctoral position - isogeometric analysis

IMATI-CNR and the Mathematics Department of the University of Pavia offer a postdoc position on isogeometric analysis. This research project focuses on the design and implementation of innovative isogeometric methods for solid/fluid mechanics.  In particular the target applications are related to

- nearly-incompressible and fibered materials

- fluids in geological formations

This research project is partially supported by the private sector, and is supervised by Annalisa Buffa and Giancarlo Sangalli.

jiangyuli's picture

2015 MRS Spring Meeting: Mechanics of Energy Storage and Conversion

The abstract submission is open now, http://www.mrs.org/spring2015/, and will be due on Oct. 23.

 

Symposium H: Mechanics of Energy Storage and Conversion─Batteries, Thermoelectrics and Fuel Cells

rodrigoengmec's picture

SNP 2014 meeting

This 52th meeting of the Society of Natural Philosophy, entitled “Scale Bridging in Mathematical and Mechanical Sciences”, is focused on the formulation, analysis, and simulation of boundary-value and initial-boundary-value problems for partial-differential equations describing the behavior of materials which exhibit complexity and structure on varying length and time scales. Attention is specifically addressed to the mechanics of complex fluids and solids, including nano- and biomaterials.

2014 East Lake International Forum for Outstanding Overseas Young Scholars (HUST)

    2014年国际青年学者东湖论坛

East Lake International Forum for Outstanding Overseas Young Scholars

20141228-30日,中国武汉

Pradeep Sharma's picture

Call for Nominations for the Eshelby Mechanics Award for Young Faculty

It is my pleasure to solicit nominations for the "Eshelby Mechanics Award for Young Faculty". This award, launched in 2012, is given annually to rapidly emerging junior faculty who exemplify the creative use and development of mechanics. The intent of the award is to promote the field of mechanics, especially among young researchers. While interdisciplinary work that bridges mechanics with physics, chemistry, biology and other disciplines is encouraged, the ideal awardee will demonstrate clear inspiration from mechanics in his/her research.

Shixuan Yang's picture

Stretchability and compliance of freestanding serpentine-shaped ribbons

High-performance stretchable electronics have to utilize high-quality inorganic electronic materials such as silicon, oxide or nitride dielectrics, and metals. These inorganic materials usually crack or yield at very small intrinsic strains, for example, 1%, whereas bio-integrated electronics are expected to at least match the stretchability of bio-tissues (20%) and deployable structure health monitoring networks are expected to expand from wafer scale (several centimeters) to cover macroscopic structures (several meters).

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