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Project Associate / PhD Positions: Multiscale Simulation of Nano-Composites for Fatigue & Fracture

Submitted by Vijay Kumar Sutrakar on

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 mechanisms

Submitted by Amir Abdollahi on

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

Instability of supersonic crack in graphene

Submitted by beenchang on

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,

Call for abstracts in Minisymposium on Mechanics of Multifunctional Materials

Submitted by liuliping on

 Dear Colleagues:

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/)

Experiments in anti-plane deformation of thin films

Submitted by Thanasis Zisis on

Dear all,

I was curious whether there are any
experimental information and / or results regarding the out of plane (anti-plane)
deformation of (very) thin films. For example an elastic thin film subjected to anti-plane loading on its surface. Any other suggestions regarding possible applications of anti-plane loading conditions in thin films would be appreciated. 

 

Thanks a lot,

Thanasis

Please suggest good books for nonlinear FEM and mechanics of composite materials

Submitted by AP on

Hello,

For my project I need to learn nonlinear finite element method (FEM) and composite materials. I am familier with linear FEM. Please suggest me good book for nonlinear FEM which will have good explanation of the subject. Also, please suggest book on composite materials especially having lot of solved examples. I know there are lots of experts in this subject on imechanica, so please give me some suggestions. Thanks. 

Thanks.