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Postdoctoral research in topology and fiber composite optimization at UC San Diego

Submitted by alicia on
job

Applications are sought for a Post-Doctoral Researcher at University of California, San Diego (USA) to join the M2DO research lab. The primary research focus is to develop topology optimization for fiber composite material. In particular the research will develop an optimization method for structural topology as well as fiber composite architecture making essential use of the finite element method for structural mechanics. The position is initially for one year with a possibility for renewal. 

How are principal planes & eigen vectors of the stress tensor related ? | An intuitive explanation

Submitted by rajan_prithivi on
education
principal stress
principal plane
solid mechanics
strength of materials
stress
stress state
state of stress
Brittle failure
mohr circle
failure theories
structural mechanics
Eigen value
Eigen vector

To obtain the principal planes we construct the stress tensor and find the eigen vectors. Here is an attempt to explain it more intuitively rather than the use of the formal mathematical method. Hope you enjoy this video!
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This is an educational outreach initiative targeted at all engineers interested in mechanics and seek simpler explanations. Kindly share if you learn something out of this !

Here is the link to the VIDEO

Thanks,
Prithivi

Post-doctoral fellow in Chile's Legato Team

Submitted by Stephane Bordas on
job
postdoc
computational mechanics
IGA
xfem
fracture
cosserat
job

Possibilities for postdoctoral fellowships in Computational Mechanics with Elena Atroshchenko in collaboration within the Legato Team http://legato-team.eu

Please apply here: http://www.conicyt.cl/fondecyt/2016/09/06/concurso-postdoctorado-2018/

If you need information, please contact Elena Atroshchenko eatroshchenko [at] ing.uchile.cl>

Generalized stacking fault energies, ductilities, and twinnabilities of CoCrFeNi-based face-centered cubic high entropy alloys

Submitted by mohsenzaeem on
research
high entropy alloys
ductilities
twinabilities
density functional theory

Effects of Cu, Mn, Al, Ti, Mo on generalized stacking fault energies, Rice-criterion ductilities, and twinabilities of CoCrFeNi-based face-centered cubic high entropy alloys were investigated using density functional theory calculations. The calculated barrier energies and twinnabilities revealed that the addition of Ti or Mo increased the tendency of dislocation glide and deformation twinning, while addition of Mn, Cu and relatively high amount of Al facilitated dislocation gliding and martensitic transformation. Low amount of Al resulted in only dislocation gliding.

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