Shape Memory Alloys

#IPPTPAN in collaboration with Department of Engineering at #NTU is offering four fully supported #PhD positions in the following fields:

1) Non-linear thermo-mechanical behaviour of polycrystalline shape memory alloys undergoing complex loadings < https://www.ippt.pan.pl/_download/tem_prac_dok/2020_z_kowalewski_en_1.pdf >

Monolithic Bulk Metallic Glasses (BMGs) exhibit strain softening or elastic-perfectly plastic response under uniaxial loading. However, shape memory alloy particle reinforced BMG matrix composites show strong work hardening in experiments. In our recent paper published in Scripta Materialia, we explain the Mechanistic origins of work hardening in shape memory alloy particle reinforced ex-situ bulk metallic glass matrix composites through three dimensional finite element simulations.

The following description is for a position is in my research group at Khalifa University in Abu Dhabi, United Arab Emirates. 

About Khalifa University (www.kustar.ac.ae)

Job Summary:
The postdoctoral research associate is expected to
provide research support within the frame of a multi-year engineering
research project undertaken by faculty from the departments of
Mechanical Engineering and Applied Math and Sciences at Khalifa
University. Limited teaching or other academic duties may be assigned to
the successful candidate under the supervision of the Advisor as
required by the University.
The successful candidate will be

Hi!

I'm already simulating a shape memory alloy behavior with the aid of the HETVAL subroutine, but I'd like to use UMATHT instead, since the HETVAL can't simulate correctly heat absortion(cooling down).

I've tried to add the required values for UMATHT without achieving a correct phase fraction simulation, and some times even no compilation of the .for file.

Is there any other examples that uses UMATHT besides the Stefan problem?
Any other recommendation about HETVAL to UMATHT migration?

Hello,

I am a Masters student and I need to model a spring shape memory alloy in ABAQUS. I have found a UMAT file,however the file contains the geometry of a 1X1X1 cube. Does anyone have any idea of how I could copy the geometry of the spring(which i modeled in solidworks and imported to ABAQUS)into the input file of the cube,so that I could run the model in ABAQUS. I have tried this but ABAQUS is giving me errors

Or does anyone have any other idea of how I could model a Sping SMA in ABAQUS?

Thanks

Akin

Hi Dear fellow Mechanicians

I am Ali Nojoumi a M.Sc. Civil engineer and I'm modleing shape memory alloys using in concrete shear walls to reduce the effects of earthquakes...

making my Model by ABAQUS, I should use UserSubroutine to define such SuperElastic behavior How can I manage that and   have anyone ever done this?

I would be glad to have your suggestions or any contribution.

thanks alot; AliNojumi@GMAIL