lar739's picture

Journal Club Theme of May 2013: Mechanics of biological and bio-inspired supramolecular assemblies

Supramolecular assemblies are dynamic structures composed of simple molecular building blocks that self-assemble into hierarchically organized complexes driven by reversible (weak) intermolecular interactions (e.g. hydrogen bonds). This bottom-up approach to materials synthesis is utilized in nature to create flaw tolerant, highly functional materials that exhibit extraordinary mechanical properties arising from parallel clusters of weak interactions such as hydrogen bonds that work collectively. Such geometric arrangements are observed in stable biomolecular assemblies such as spider’s silk and amyloid plaques (see for instance an earlier journal club entry on protein materials http://imechanica.org/node/2653 ).


lbotto's picture

PhD opportunity at Queen Mary, University on London, on numerical simulation of particle-laden interfaces

A 3-year PhD scholarship is available to work on simulation methods to treat colloidal
particles that are flowing near, or are transported within fluid interfaces (L.
Botto et al., Soft Matter, 2012, 8, 9957-9971); the focus is on fluid
mechanical aspects coupled with physical-chemistry. For details: webspace.qmul.ac.uk/lbotto


Henry Tan's picture

Corrosion and Materials in the Oil and Gas Industries

The book “Corrosion and Materials in the Oil and Gas Industries”, edited by Reza Javaherdashti, Chikezie Nwaoha and Henry Tan, has been published by CRC Press/Taylor and Francis LLC, USA.


saberelarem's picture

PhD scholarship on: "Reduced Order Model of PGD type application to numerical computing in high cycle fatigue"

A fully funded PhD scholarship exists in the area of solid mechanics at
the Arts et Métiers ParisTech, CER Angers, France. 
http://www.ensam.fr/en/.

The successful applicant will have a  Msters' degree  in
solid mechanics, physics or applied Mathematics . He/she 

is expected to have very good numerical
skills.


Liangliang Zhu's picture

Mechanical Analysis of Eyelid Morphology

Liangliang Zhu and Xi Chen, Acta Biomaterialia (2013)       

From a mechanical instability perspective, a double-eyelid is a double-folded thin film structure on a curved substrate, caused by compression as the film “slides” on the substrate. The underlying mechanics issues, in particular the requirements for forming a double-folded structure, are studied using a modeling/simulation framework. A minimalist model is employed to explore the wrinkle-to-fold transition. Refined and enriched models are further developed based on anatomical structures, which demonstrate three critical factors for the formation of double-layer folding of the eyelid. First, a crease line in the eyelid is essential where the local bending rigidity is relatively weak. Second, the skin above the crease line should be thin and wide enough. Third, the skin below the crease line should be possessed with relatively large effective stiffness so it can be lifted as a whole when eyes open. When the eye is opened beyond about 40% of its initial wrinkle wavelength, the double-folded structure emerges. Various types of eyelid morphologies are discussed based on the mechanistic model. The study provides useful insights for surgery, cosmetics, morphogenesis, as well as microfabrication.

Simulation of the double-eyelid (right) and a real one (left). Simulation of the single eyelid

Simulation of the double (up) and single (down) eyelid.

"


William D. Nix's picture

Biographical Memoir of Zay Jeffries by W.D. Nix

I have written a National Academy of Sciences biographical memoir of Zay Jeffries, one of the great American metallurgists of the 20th century.  I am posting the link to the NAS website here with the thought that some readers of iMechanica might be interested in the piece.  Some will be interested to learn that Jeffries came very close to discovering dislocations some 18 years before the great papers of Taylor, Orowan and Polyanyi in 1934.

 

http://www.nasonline.org/publications/biographical-memoirs/memoir-pdfs/j...

 

W.D. Nix 

 

 


Dibakar Datta's picture

Professor Rod Clifton to Receive Sigma Xi Monie A. Ferst Award

Rod Clifton , Rush C. Hawkins University Professor Emeritus and Professor (Research) at the School of Engineering at Brown University, has been selected as the winner of the 2013 Sigma Xi Monie A. Ferst Award .


Postdoctoral Research Associate

A research position for a Postdoctoral Research Associate is now available at the working group of Continua Mechanics at the TU Darmstadt, Germany, led by Professor Dr.-Ing. Charalampos Tsakmakis.

The position is fulltime fixed-term for two years.


The main task is the development of a thermodynamical consistent constitutive model for micropolar and micromorphic
plasticity and its numerical implementation into a finite element environment. Preliminary work has been done, so that a
satisfactory closure is possible within the given scope of two years.
Applicants should match the following requirements:

 


Numerical Simulation of Particle Stress and Fracture using FEMDEM: Application to Process Catalysts


Numerical
Simulation of Particle Stress and Fracture using FEMDEM: Application to Process
Catalysts




Johnson
Matthey CASE/EPSRC PhD Studentship Award- Duration 36 months


Fabrice Pierron's picture

PhD opportunity at the University of Southampton on high strain rate material testing

Title: Exploration of novel multiaxial high strain rate tests of materials based on full-field strain measurements and inverse identification

Sponsor: EOARD http://www.wpafb.af.mil/library/factsheets/factsheet.asp?id=16662/

Start of PhD: end of September 2013


Ashby PhD Scholarship in the Mechanics of Materials at Cambridge University, Department of Engineering

A fully funded PhD scholarship exists in the area of mechanics of materials.  The successful applicant will have a 1st class degree (and ideally a Masters degree) in Engineering solid mechanics or in Engineering materials.  The precise topic of the PhD can be fixed after the scholarship has been awarded.

 

Further details may be obtained from Ms H A Gardner.  To apply complete form CHRIS/6 (coversheet for C.V.s) available at http://www.admin.cam.ac.uk/offices/hr/forms/ and send with your C.V. and covering letter to Ms H A Gardner, Department of Engineering, Trumpington Street, Cambridge, CB2 1PZ, (Tel +44 1223 748241, Fax +44 1223 339263, email has22@cam.ac.uk.


Two postdoctoral positions available at NIST

The Biosystems and Biomaterials Group at NIST has two postdoctoral positions available for recent PhD graduate to work on (1) simulation of photon transport (light migration) in polymeric composites (2) modeling of cell-material adhesive interactions. These interdisciplinary research programs require the prospective applicants to have a strong background in computational methods (finite element or MD).


PhD positions at the Department of Mechanical Engineering at Politecnico di Milano

The Department of Mechanical Engineering at Politecnico di Milano is
currently seeking applicants for PhD positions in the following research areas:

1- Dynamics and Vibration of Mechanical Systems and Vehicles
2- Machine and Vehicle Design
3- Manufacturing and Production Systems
4- Methods and Tools for Product Design
5- Materials
6- Measurements and Experimental Techniques
7- Smart Materials and Structures

Detailed information on our scientific areas, scholarship availability and proposed research topics can be found at at www.mecc.polimi.it (Research->PhD)


ADINA Research & Development Engineer in Solids and Structures

We at ADINA R & D are looking for a Research & Development Engineer in Solids and Structures — general
finite element development. A PhD in applied mechanics or a related
discipline is highly desirable for this position. Applicant must have excellent
knowledge of finite element methods and good programming skills (Fortran
or C/C++).

If you are interested in working with us at ADINA R & D on our
exciting developments, please contact Dr. Walczak at janw@adina.com.
ADINA R & D offers an excellent working environment, salary and benefits.

www.adina.com/jobsx.shtml


malfano's picture

KAUST Workshop on "Computational and Experimental Mechanics of Advanced Materials"

The CEMAM workshop will be held at KAUST from July 1st to 3rd 2013. The event will be focused on the mechanics of solids and structures with applications to composite materials.


Postdoctoral Researcher – Numerical modelling in nanomechanics

Applications are invited for a 24-month postdoctoral position at the
Department of Physics, University of Torino, Italy, in the area of
theory and numerical modelling in the nanomechanics of bio-inspired
hierarchical materials. The position is part of an ERC IDEAS Starting
Grant funded programme, with the aim of designing synthetic (composite)
materials with exceptional mechanical properties. The post holder will
develop multiscale simulation codes for such problems as the
optimization of strength and toughness, self-healing or
super-/anti-adhesion in hierarchical composite nanomaterials, analyze
examples of biological/bioinspired materials, perform parametric studies
for the determination of optimal characteristics and hierarchies for


Yonggang Huang's picture

Dr. Asha Nurse from NIST will receive the inaugural Journal of Applied Mechanics Award.

Dr. Asha Nurse from NIST will receive the inaugural Journal of Applied Mechanics Award for her paper "A model of force generation in a three-dimensional toroidal cluster of cells" (Journal of Applied Mechanics, v 79, article 051013, 2012).


Yonggang Huang's picture

Professor John Hutchinson has been elected as a Foreign Member of the Royal Society

Professor John Hutchinson has been elected to a Foreign Member of the Royal Society.

http://royalsociety.org/news/2013/new-Fellows-2013/


Vladislav Yastrebov's picture

PhD position "Carbone interphases in SiC/SiC composites"

We are looking for PhD candidates to study interfaces in SiC/SiC fiber composites. The project is in collaboration with CEA and Centre des Matériaux, MINES ParisTech under the supervision of Marie-Hélène Berger (MINES ParisTech), Cédric Sauder (DMN/SRMA/LTMEX) and Sylvie Poissonnet (DMN/SRMP).

Title : "Influence of Carbone interphases in SiC/SiC composites based on Hi-Nicalon S and Tyranno SA3 fibers"


jenda_z's picture

Multiple post-doctoral positions in the field of modeling, simulation, assessment and optimization of multi-functional materials

The Czech Technical University in Prague - University Center for Energy Efficient Buildings offers nine post-doctoral positions in the field of modeling, simulation, assessment and optimization of multi-functional materials and structures.

Start date: as soon as possible after 21 June 2013, until all positions are filled
Contract duration: until 30 June 2015 (with a critical evaluation after the first year)

The present project integrates nine different topics, each of which will be supervised by a mentor from the Faculty of Civil Engineering of the Czech Technical University in Prague. The particular topics include


Stephan Rudykh's picture

Analysis of microstructural induced enhancement of electromechanical coupling in soft dielectrics

Electroactive soft elastomers require huge electric field for a meaningful actuation. We demonstrate, by means of numerical simulation, that this can be dramatically reduced and large deformations can be achieved with suitably designed heterogeneous actuators. The mechanism by which the enhancement is attained is illustrated with the aid of both idealized and periodic models.


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