In a set of recently published papers, the first in Nature Materials and the second in Advanced Engineering Materials , we investigate methods for designing, fabricating, and testing a new class of nano-architected lattice structures, which we refer to as nanolattices. These nanolattices are comprised of hollow tubes with lengths on the order of microns, diameters on the order of hundreds of nanometers to microns, and wall thicknesses on the order of tens to hundreds of nanometers. During the fabrication, we have a high degree of control over the geometry of the structure, the dimensions of the tubes (both the diameter and the wall thickness), and the overall size of the structure. Depending on the constituent material being used, there is the potential to tune the thickness of the tubes in a way such that a material size effect can be exploited. There are a number of different geometries that have been designed and are currently being tested, and they can be seen here. The successful fabrication and testing of architected nanolattice structures on this scale, and with this degree of fidelity, constitutes a breakthrough in materials engineering. Using advanced two-photon lithography techniques to make materials with high structural strength in combination with materials size-effects, we have begun to reach into an entirely new material parameter space.
I would like to share with fellow mechanicians an educational iPad app I recently developed. The name of the app is Truss Me! and the main goal is to help students, all the way from high school to college, to build intuition on how truss structures behave. The video below highlights some features of the app:
The app utilizes state of the art simulation techniques to provide
Deadline extended: Call for abstracts and special issue papers: Computational mechanics of cells, tissues, and biomaterialsSubmitted by azadpoor on Fri, 2013-12-06 11:04.
We would be pleased to have a contribution from you or from one of the
members of your group among the presentations of the symposium entitled
COMPUTATIONAL MECHANICS OF CELLS TISSUES AND BIOMATERIALS
organized within the joint World Congress on Computational Mechanics and European Conference on Computational Mechanics (http://www.wccm-eccm-ecfd2014.org/frontal/default.asp )
to be held on 20-25 July 2014 in Barcelona (Spain).
Published ASAP, Nano Letters (2013)
I have implemented a DG code for linear elasticity. If I solve Ku=f, then I obtained a correct result (compared with a continuous Galerkin method). However if I used a Newton-Raphson (NR) method to solve the equilibriuum equation, although I still got a correct result, the convergence of NR was bad: I needed 3 or 4 iterations for linear elasticity!!! The young modulus is 3e7 and the stabilization parameter is 3e9. If a larger value of 3e10 was used for the stabilization parameter, it converged in 2 iterations.
For your information, I am using the Symmetric Interior Penalty Method or Nitsche's method. And the material is compressible.
Ying Li, Wylie Stroberg, Tae-Rin Lee, Han Sung Kim, Han Man, Dean Ho, Paolo Decuzzi, Wing Kam Liu
Dr. Steven Kurtz, Exponent, Inc., and Drexel University, USA will be the Plenary Speaker at ICoBT2014
Keynote Speakers include:
Dr. Siegfried Derler, EMPA, Switzerland
Professor Jeremy Gilbert, Syracuse Biomaterials Institute, USA
Dr. Jason Stokes, The University of Queensland, Australia
Professor Yu Tian, Tsinghua University, China
I was reading the Bernard Shutz's book on Geometrical Methods in Mathematical Physics. It is an excellent book on the subject; however there should exist an auxiliary source whenever it is needed. I wonder where I can find more information about Fiber Bundles and their applications in mathematical physics.
Symposium: "Validated Materials Modeling with Quantified Uncertainties Across Scales and Physics" at WCCM-14 in Barcelona, SpainSubmitted by Jaime on Wed, 2013-12-04 00:43.
The 11th World Congress on Computational Mechanics will be held 20-25 July 2014 in Barcelona, Spain.
We cordially invite you to submit an abstract to present your work in the minisymposium “Validated Materials Modeling with Quantified Uncertainties Across Scales and Physics” at http://www.wccm-eccm-ecfd2014.org. A detailed description of the minisymposium is attached below. The deadline for the abstract submission is December 15, 2013.
Please fee free to forward this information to colleagues who might be interested in attending.
KAUST (King Abdullah University of Science and Technology)
Open Position as Optoelectronics Lab Engineer
Competitive Tax-free Salary
Just to let you know that we are making a call for papers for the minisymposium Computational Techniques and Simulation of ....Submitted by jlcurie on Tue, 2013-12-03 12:22.
The Multiscale Design Systems, LLC (http://www.multiscale.biz/) has an opening for a Multiscale Scientist position in multiscale modeling and simulation of composites and metals.
Required qualifications for this positions are as follows:
1. A PhD degree mechanics or related engineering discipline.
2. Strong background in solid mechanics, finite elements, multiphysics and multiscale modeling.
3. Proficiency in Fortran, C, C++ and established record in code development.
4. Provide Technical Leadership.
5. Good communication skills.
A postdoctoral research positions is open for application
An enthusiastic and highly motivated postdoctoral scientist is sought to work on water desalination using nanostructured membranes at Nanyang Technological University, Singapore.
The candidates should have rich experiences in relevant research areas, good publication records, and excellent writing skills. Preference will be given to those with experience in molecular dynamics simulation. The contract will be one year and renewable subject to performance.
The Uniaxial Tensile Response of Porous and Microcracked Ceramic Materials
Amit Pandey,§,*,†,‡ Amit Shyam,§,* Thomas R. Watkins,§,* Edgar Lara-Curzio,§,** Randy J. Stafford,¶,* and Kevin J. Hemker||
Faculty Positions in Department of Mechanics and Engineering Science
College of Engineering, Peking University
The Department of Mechanics and Engineering Science of College of Engineering at Peking University invites applications for tenure-track faculty positions in mechanics and engineering science at various levels, including Assistant Professor, Associate Professor, Full Professor, and Chair Professor, in the following areas:
Position Description: Two postdoctoral associate positions, one in computations and one in experiments, are available at Rice University. The first position is in the area of atomistic and molecular modeling of nanoscale defects, dislocations and mechanics of complex, low symmetry compounds. The computational techniques will be integrated to approaches from statistical mechanics and physical chemistry to provide quantitative predictions of properties of complex materials across different time- and length-scales.
Chinese Scholarship Council Positions at Cardiff University in Computational Mechanics - CSC in Computational MechanicsSubmitted by Stephane Bordas on Sat, 2013-11-30 10:01.
Cardiff School of Engineering invites applications for support for China Scholarship Council award holders. The awards will cover tuition fees at the overseas rate for 3 years for applicants who secure a China Scholarship Council award to cover living costs.
Potential students are required to email Julie Cleaver (Admissions) Julie Cleaver <firstname.lastname@example.org> and their potential supervisors (see below for a list), a CV, brief description of the proposed research project; details of any research publications (if appropriate); and the name of a proposed supervisor (if already discussed with a member of staff).
lars beex <BeexL@cardiff.ac.uk> : Quasi-continuum method and fibrous materials
One post-doctoral fellowship is available in RealTcut, funded by the Strasbourg Institute of Advanced Study
The goal of the post-doc is to extend the preliminary results which can be seen here: http://youtu.be/KqM7rh6sE8s and will appear shortly in the journal Medical Image Analysis
The successful candidate will be based in Strasbourg in the ICube laboratory http://icube.unistra.fr/en/
The sixth issue in 2013 (Volume 3, Issue 6) of Theoretical and Applied Mehcanic Letters (TAML) is now online.
We are seeking outstanding candidates for a Postdoctoral Research Fellow Position at the Institute of High Performance Computing of Singapore, working on a three-year research project of additive manufacturing. The position requires a Ph.D degree in mechanical engineering, mechanics, materials science, or equivalent experience. Additional requirements include: 1) Experience in thermal and structural simulations using Abaqus. 2) Experience in molecular dynamics simulations using Lammps. 3) Strong oral and written communication skills in English. 3) Good publication records.
Call of interest - Post-doc position at IMT Lucca on computational mechanics for photovoltaic applicationsSubmitted by marco.paggi on Thu, 2013-11-28 20:11.
This is a call of interest for a post-doc position (1 year renewable up to 3 years) at the IMT Institute for Advanced Studies Lucca, Italy (www.imtlucca.it), in the field of computational damage and fracture mechanics. The activities are in the framework of the ERC Starting Grant IDEAS "Multi-field and multi-scale Computational Approach to design and durability of Photovoltaic Modules" (Prof. Paggi, Principal Investigator).
For more details about the project, see:
and for the research unit Multiscale analysis of materials - MUSAM:
Postdoctoral Fellow/Research Associate –Using Biomechanics to Predict Vision Loss Progression– National University of SingaporeSubmitted by mgirard on Thu, 2013-11-28 14:57.
Job description: We are looking for a bright, dynamic, and highly motivated individual to perform research in biomechanics with applications to ophthalmology. For more information about our Laboratory, please visit: http://www.bioeng.nus.edu.sg/ivb/. This is a project in collaboration with clinicians from the Singapore Eye Research Institute (top 5 eye institute worldwide) and from Moorfields Eye Hospital, London, UK (biggest eye hospital worldwide).
One PhD student position available
at the Department of Mechanical and Aerospace Engineering of the University of
Central Florida. Students with background in solid mechanics, computational
mechanics, finite element analysis or molecular dynamic simulation are
particularly encouraged to apply. If you are interested, please send your
resume and representative publications (if have) to Dr. Yuanli Bai (email@example.com).
A numerical study of elastic bodies that are described by constitutive equations that exhibit limited strainsSubmitted by Alejandro Ortiz... on Mon, 2013-11-25 19:36.
Recently, a very general and novel class of implicit bodies has been developed to describe the elastic response of solids. It contains as a special subclass the classical Cauchy and Green elastic bodies. Within the class of such bodies, one can obtain through a rigorous approximation, constitutive relations for the linearized strain as a nonlinear function of the stress. Such an approximation is not possible within classical theories of Cauchy and Green elasticity, where the process of linearization will only lead to the classical linearized elastic body.