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>
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.
Michele Ciavarella Yang Xu Robert L. Jackson
Some Closed-Form Results for Adhesive Rough Contacts Near Complete Contact on Loading and Unloading in the Johnson, Kendall, and Roberts Regime
Journal of Tribology Copyright VC 2018 by ASME JANUARY 2018, Vol. 140 / 011402-1
Recently, generalizing the solution of the adhesiveless random rough contact proposed
by Xu, Jackson, and Marghitu (XJM model), the first author has obtained a model for
Phase-field models for crack propagation enable the simulation of complex crack patterns without complex and expensive tracking and remeshing as cracks grow. In the setting without inertia, the crack evolution is obtained from a variational energetic starting point, and leads to an equation for the order parameter coupled to elastostatics. Careful mathematical analysis has shown that this is consistent with the Griffith model for fracture. Recent efforts to include inertia in this formulation have replaced elastostatics by elastodynamics.
A few of you might find this interesting. We indented a disk of aluminum in order to make a specimen with residual stress. The loading was axisymmetric. The aluminum had plastic anisotropy of about 10%. Because of that mild anisotropy, the residual stresses were anisotropic by about 40% and the residual strains were anisotropic by 100%.
The paper is free until July 31 at https://authors.elsevier.com/a/1VCA54kE0BEFT
It is common practice when solving boundary value problems to split the solution into a symmetric and an antisymmetric part to temporarily reduce the number of variables and the mathematical administration. As soon as the symmetric problem is solved, the antisymmetric problem, or vice versa, is almost solving itself. Any problem can be split into a symmetric and an antisymmetric part which is a relief for anyone who analyses mixed cases.
We are looking for a PhD and postdoc researcher in thermographic inspection of composites, in the context of NDT (NonDestructive Testing) and defect detection.
More information can be found on http://www.composites.ugent.be/PhD_job_vacancies_PhD_job_positions_comp….
There is a PhD position in Computational Engineering and Science offered at the MobiLab Transport Research Group of the University of Luxembourg! We look for a passionate researcher who wants to study network controllability in transportation systems for 3(+1) years. If you are interested go to http://emea3.mrted.ly/1gy60
Controllability of Transportation Networks
