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Research Scientist at TU Bergakademie Freiberg

Submitted by Sebastien Groh on
job
molecular dynamics
Crystal plasticity
discrete dislocations.

A research scientist position is available at TU Bergakademie Freiberg in the area of computational modeling of dislocation properties using either molecular dynamics, discrete dislocations or crystal plasticity. The research of the group focuses on dislocation properties at both the nanoscale and the microscale. The successful candidate should have a strong background in numerical modeling with demonstrated capability of innovative and independent research.

return map algorithm

Submitted by UMAT on

Dear all,

I am trying to code a UMAT subroutine for perfect plasticity with a Tsai-Wu failure surface. I follow the procedure of the closest point projection in Simo & Hughes, Box 3.5, which is quite straight forward. At least I thought so

 The algorithm converges but unfortunately not to the correct point in the (plane-stress) stress space. At first I used an yield surface wich gives a unit sphere in the stress space. It is easy to control the normality of the plastic strain increment and the return-map algorithm is implified to a radial return algorithm.

PhDs and Post-doctorate Research Positions in Shape Memory Alloys

Submitted by binoddhakal on
job
ABAQUS
nonlinear finite element formulations
Shape Memory Alloys
NiTi
Phds
Post-Docs

There
are several immediate openings of research-oriented Phds and Post-Doc positions, in the
department of civil engineering, the University of Akron (UA). Please see tha attached file for datails.

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