A new paper on the OEC fatigue problem: “Determination of Early Failure Sources and Mechanisms for Al 99.7% and Al-Mg-Si Alloy Bare Conductors Used in Aerial Transmission Lines”, by S. Karabay and E. Feyzullahoglu. Paper has been accepted for publication in March 2014 in the “Engineering Failure Analysis” journal. Abstract can be found on-line: http://dx.doi.org/10.1016/j.engfailanal.2013.12.002
Applications are invited for a PhD position (four years) and a post-doctoral position (three years) in the area of computational modelling in the Computational Mechanics of Materials group of the Faculty of Civil Engineering and Geosciences at Delft University of Technology in the Netherlands.
The successful applicants will work with Dr. Angelo Simone on a project funded by the European Research Council through the ERC Consolidator grant StruBa (Computational Modelling of Structural Batteries). The positions are to commence in June 2014 or as soon as possible thereafter.
More information on the positions and the application procedure can be found here.
Since James Watt, a Scottish inventor, invented the steam engine, human civilization relies more and more on energy supply. The re-rise as an international superpower and the global energy crisis are challenging China and the world. We are at a transitional age. On the one hand, we see the technology advances in exploration and development of oil and gas, a depleting resource; and the growth in handling ageing and decommissioning. On the other hand, we see ideas and plans for new energy structure in the future.
The class started today. I'll be teaching fracture mechanics this semester. I'll be mostly using the class notes I wrote in 2010, but will post updated ones.
In today's class I covered "Trouble with linear elastic theory of strength." I have just posted updated notes of the lecture. The new notes begin with the follwoing paragraphs.
In phase field method how one can specify the crack in fixed grid?
In case of finite element method one uses two overlapping nodes to model crack, which nodes separate after crack propagation. In case of phase-field, generally people use fixed grid finite difference method. My question is how the same node point can show two different displacements when crack has passed through it like FEM?
ACADEMICS! It's your chance to shine: Submit a poster to be considered for display at the 2014 SCC. All submissions will receive a FREE t-shirt (while supplies last) :) If chosen, you'll have the chance to see and be seen by top professional in the industry. Good luck!
Follow the link to learn more:
A Postdoc position on “Risk-based Selection of Constitutive Models for Geotechnical Analysis” is open at Ecole Centrale de Nantes in France. Fore more details, see the attached pdf file.
Applications are invited for a PhD position (four years) in the area of computational modelling in the Computational Mechanics of Materials group of the Faculty of Civil Engineering and Geosciences at Delft University of Technology in the Netherlands. More information can be found below.
Computational material design and characterization of ceramics for ballistic protection
University: Delft University of Technology
Faculty: Civil Engineering and Geosciences
Level: Master degree
Working hours: 38 hours per week
Contract: 4 years
Salary: €2083 to €2664 per month gross
Can buckling and instability of a structure be affected by Eshelby forces?
We provide a positive answer to this question, see http://www.ing.unitn.it/~bigoni/blade.html
We would like to invite you to participate in the Annual Symposium on “Phononic Crystals and Metamaterials” at the ASME International Mechanical Engineering Congress and Expo (IMECE) to be held in Montreal, Quebec (Nov. 14-20, 2014).
The Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia wish to make an academic appointment in the area of:
- Solid Mechanics
- Mechanics of Composite
- Fluid & Thermal Engineering
- Renewable Energy
- Manufacturing Engineering
- Automotive Engineering
- Mechatronics Engineering
- Material Engineering
- Computational Fluid Dynamics
- Biomechanical Engineering
- Biomaterials & Tissue Engineering
We expect the successful candidate to be an enthusiastic lecturer and outstanding researcher who will help mainatin our high levels of education and research.
The Computational Science Research Center at San Diego State University is looking for talented and motivated applicants for its interdisciplinary master's and Ph.D. program in Computational Science.
I recently posted a free, online, and
condensed version of my book Intermediate Mechanics of Materials, Second
Edition. It is posted on my website madhuvable.org
and can be used for reference or by self-learners. In addition to the
online book, there is a glossary of mechanics terms, brief reviews of
Statics, Matrix Algebra, Numerical Methods, and Mechanics of Materials.
This complements my earlier free-online book Introduction to Mechanics of Materials posted on this link .
OPEN POSITION AT LMS INTERNATIONAL IN THE FIELD OF
ISOGEMOMETRIC BOUNDARY ELEMENT METHOD
BATWOMAN (Basic Acoustics Training - & Workprogram On
Methodologies for Acoustics - Network) is the Initial Training Network
(ITN) No. 605867, funded under the FP7 Marie Curie programme of
the EC. Duration: Sep. 1, 2013 - Aug. 31, 2017.
Topic: Towards zero prototyping in ceramic component design
A highly deformable capacitor made of a soft dielectric and two conformal
electrodes can switch between two states discontinuously, by a first-order transition, as the total
charge varies gradually. When the total charge is small, it spreads evenly over the area of the
capacitor, and the capacitor deforms homogeneously. When the total charge is large, it localizes in
a small region of the capacitor, and this region thins down preferentially. The capacitor will
survive the localization without electrical breakdown if the area of the electrode is small. Such a
bistable system may lead to useful devices.
Apples and oranges. Each element in a set is a pile containing some number of apples and some number of oranges. Adding two piles means putting them together, resulting in a pile in the set. Multiplying a pile and a real number r means finding in the set a pile r times the amount. We model each pile as a vector, and the set as a two-dimensional vector space over the field of real numbers.
A vector represents different objects as a single entity. A pile containing some number of apples and some number of oranges is a vector. The addition of two vectors does not require us to add apples and oranges. Rather, in adding two piles, we add apples to apples, and oranges to oranges. The addition of vectors generalizes the addition of numbers: adding two vectors corresponds to adding two lists of numbers in parallel.
Overview: The peridynamic formulation is a
spatially nonlocal derivative free model for simulating problems of free crack
propagation.Material points interact through short-range forces and the
formulation allows for discontinuous deformations. Here the short-range forces
are initially elastic and soften beyond a critical relative displacement. We
upscale this peridynamic model to find the macroscopic (a.k.a. small horizon)
limit. It is shown that the limiting macroscopic evolution has bounded energy
given by the bulk and surface energies of brittle fracture mechanics. The
macroscopic evolution corresponds to the simultaneous evolution
of the fracture surface and linear elastic displacement away from the crack
It gives me great pleasure to announce the outcome of the 2013 competition for the Eshelby Mechanics Award for Young Faculty. This award 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. The selection committee consisted of: K. Ravi-chandar (UT Austin), Huajian Gao (Brown University), Kaushik Bhattacharya (Caltech), Roger Fosdick (Minnesota University), and Yonggang Huang (Northwestern University).
The award consists of $ 1500 cash and a commemorative plaque. The receipients are honored at the ASME Applied Mechanics Banquet.
PhD scholarship is immediately available at the School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, Australia. Applications are invited for two open positions in one of the following areas: (1) Mechanics of nanotubes and graphene; (2) Multiscale simulation of functionally graded or nanotubes/graphene reinforced composites; (3) Thermal buckling and post-buckling of composite structures. The research work is supported by Australian Research Council under Discovery Projects scheme.
We are looking for a highly-motivated research
fellow to work in the area of applied mechanics and materials.
The project is on energy harvesting using soft active materials. This is a joint effort between the Institute of High Performance Computing (A*STAR), and the National
University of Singapore. The applicant
must hold a PhD degree, prior post-doctoral experience is not required. Relevant
experience in (1) experiments and/or (2) finite element modeling and simulation
Stochastic modeling of damage evolution in composites under environmental ageing
R. Rahman, A. Haque, Z. Wu
Journal of Engineering Mathematics
April 2013, Volume 79, Issue 1, pp 153-166
This is an introductory post to a discussion on the advantages of multicellular organisms over single-celled eukaryotes from an energy harvesting viewpoint. It is intended for the New Mexico Tech biomechanics class but others can play.
As engineers we should seek for a numerical measure (or some measures) that allows us to decide how close an organism is to the optimum. Consider two cases: a seaweed in comparison to a single-cell photosynthetic eukaryote and a herbivore in comparison to a single-celled eukaryotic animal.
Comment on the possible answers, problems with the answers you previously gave or improve on the question. You will be graded on the quality of your comments over the next two weeks.