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.
Eight Mechanical Engineering Faculty
University Mechanical and Industrial Engineering department seeks faculty
candidates for multiple tenured or tenure-track appointments at the assistant,
associate or full professor level in the Department of Mechanical and
Industrial Engineering. Please refer to the positions listed below:
On behalf of the ASME Nanomaterials for Energy Technical Committee of the Materials Division, I cordially invite your participation in Track 11, Materials: Genetics to Structures
Topic 11-13: Nanomaterials for Energy.
ASME 2014 International Mechanical Engineering Congress & Exposition will be held in Montreal, Canada during November 14-20, 2014.
Abstract submission deadline: February 17, 2014
List of the abstract topics are as follows for 11-13 Nanomaterials for Energy:
One Ph.D. position will be available in the Applied Mechanics of Materials group of Mechanical Engineering Department at
Temple University, Philadelphia, PA, USA. The position will start in the coming Fall, 2014.
The research program will focus on mechanics of soft composite materials and structures as well as
their novel applications in micro/nano-fabrication, anti-biofilm, energy absorption/harvesting, etc. In
Reversible cyclic deformation mechanism of gold nanowires by twinning–detwinning transition evidenced from in situ TEMSubmitted by Daniel Kiener on Tue, 2014-01-14 08:59.
Reversible deformation of metal nanowires accommodating large strains by twinning-detwinning
University of Limerick, Ireland
Head of Department
5 Year Tenure Track. During the term of the contract the successful applicant
will have the opportunity to apply for tenure in accordance with the
University's Policy and Procedures for Granting Multi-annual Status to
Entry-level Academic Staff)
€41,498 - €51,722 p.a.
of Limerick, Ireland
REPORTS TO: Head
CONTRACT TYPE: Multiannual
SALARY SCALE: €67,986
- €88,509 p.a.
Further information for applicants and application
material is available online from:
There is an opening for a
PhD student position in Dr. Nadimpalli’s group at the New Jersey Institute of
Technology starting from Fall2014. Candidate with good academic credentials and an interest to work in experimental research projects are encouraged to apply.
Ideal candidate should have a master’s degree in mechanical/materials
science/aerospace or related field with a good background in Solid Mechanics,
Materials Science, and Experimental Methods (including but not limited to SEM,
TEM, and nanofabrication methods).
We have a new case study, looking at the permeability of 3D printed titanium implants. Learn how our software helped to streamline this project.
USIAS post-doctoral fellowship on interactive simulation of cutting and needle insertion [last call]Submitted by Stephane Bordas on Fri, 2014-01-10 15:35.
job description: http://imechanica.org/node/15720
related publications : http://orbilu.uni.lu/simple-search?query=bordas
PhD Studentship in Soft Matter Cell Biomechanics (attendance to a Chinese University and Chinese Nationality required))Submitted by lbotto on Fri, 2014-01-10 13:09.
Type of studentship: China Scholarship Council
(CSC) / Queen Mary Joint PhD scholarship
Mary University of London, School of Engineering and Materials Science
This afternoon, I had an extremely pleasant Google hangout with Daniel Suo, and Professors Zhigang Suo and Teng Li . Our main focus was on brainstorming ideas on how to improve the user experience on iMechanica. After an hour or so our conversation drifted towards educational topics including novel ways of incorporating technology in STEM education.
Title Structural FEA Intern
Category Internship in Industry
Employer Schlumberger Technology Corporation
Location United States, Texas, Sugar Land
Opening Date 01/08/2014
links to papers for download:
An experimental/numerical investigation into the main driving force for crack propagation in uni-directional fibre-reinforced ..Submitted by Stephane Bordas on Tue, 2014-01-07 06:04.
download at http://orbilu.uni.lu/handle/10993/12316
CALL FOR PROPOSALS
In the laminar mode interactions
among molecules generate friction between layers of water that slide with
respect to each other. This friction triggers the shear stress, which is
traditionally presumed to be linearly proportional to the velocity gradient.
The proportionality coefficient characterizes the viscosity of water. Remarkably,
the standard Navier-Stokes model surmises that materials never fail – the transition
to turbulence can only be triggered by some kinematic instability of the flow. This
premise is probably the reason why the Navier-Stokes theory fails to explain
The Center for Modeling, Simulation and Imaging in Medicine (CeMSIM) at Rensselaer Polytechnic Institute, Troy, NY, USA invites
applications for multiple positions (Research Assistant Professor,
Research Scientist/Research Associate, postdc) to work on projects
funded by the NIH on developing interactive computational technology. Desirable background for this position
- PhD in Mechanical Engineering or related field
- Strong background in Nonlinear Solid Mechanics and Computational Linear Algebra
- Strong background in Finite Element/Meshfree computational analysis
- Domain discretization (mesh/particle) algorithms and implementation
Effect of geometric parameters on the stress distribution in Al 2024-T3 single-lap bolted joints- Outstanding Paper Award WinnerSubmitted by Payam Soltani on Sat, 2014-01-04 14:20.
The article entitled “Effect of geometric parameters on the stress distribution in Al 2024-T3 single-lap bolted joints” published in International Journal of Structural Integrity
Applications are invited for few open positions in the area of
multiscale simulation of fatigue and fracture of advanced alloys and
nano-material based composites. Primary focus of this research is investigation
of fatigue and fracture behavior of nanomaterials and to develope various
constitutive models for continuum, based on large scale atomistic simulations.
Research effort will include development of analysis and design methods toward
improving material/structural behaviour using computer simulation. Interested
candidates should have preferably MTech/ME degree in
mechanical/civil/aerospace/material engineering discipline with good knowledge
Three-dimensional simulation of crack propagation in ferroelectric polycrystals: Effect of combined toughening mechanismsSubmitted by Amir Abdollahi on Fri, 2014-01-03 06:43.
We simulate the fracture processes of ferroelectric polycrystals in
three dimensions using a phase-field model. In this model, the grain
boundaries, cracks and ferroelectric domain walls are represented in a
diffuse way by three phase-fields. We thereby avoid the difficulty of
tracking the interfaces in three dimensions. The resulting model can
capture complex interactions between the crack and the polycrystalline
and ferroelectric domain microstructures. The simulation results show
the effect of the microstructures on the fracture response of the
material. Crack deflection, crack bridging, crack branching and
ferroelastic domain switching are observed to act as the main fracture
toughening mechanisms in ferroelectric polycrystals. Our fully 3-D
The velocity and instability of crack motion in 2D hexagonal lattice of graphene under pure opening loads
are investigated by atomistic molecular dynamics simulations. The brittle crack along zigzag direction
in a strip can propagate supersonically at even 8.82 km/s under uniform normal loading of edge
displacements. Crack moving straightly at low speeds produces atomically smooth edges, while kinking
occur beyond a critical speed around 8.20 km/s equivalent to 65% of Rayleigh-wave speed in graphene,
which validates previous theoretical predictions of rapid fracture instability in elastodynamics, and
rough and irregular edges with oscillatory overhangs are formed subsequently.
Happy New Year!
The 17th U. S. National Congress on Theoretical and Applied Mechanics that will be held June 15-20, 2014 at Michigan State University, East Lansing, Michigan. (http://www.usnctam2014.org/)