Material modelling
Postdoc position available in material models for 3D printed structures
Please check the official announcement under
https://www.jobbnorge.no/en/available-jobs/job/148255/postdoctor-in-mat…
Application deadline: March 9, 2018
PhD position in computational mechanics
We are looking for a doctoral student to work on numerical modelling of fragmentation of quasi-brittle materials. In more detail, you will study breakage and fragmentation of ice blocks. These phenomena occur under compressive loads in ice block to ice block contacts. The fragmentation process is complicated, and requires novel numerical modelling techniques. Modelling may need to be done on different scales, which may have to reach from very high resolution modeling to simplified contact models on larger scale.
deformation gradeint in VUMAT Abaqus Explicit subroutine
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Hello everyone,
I'm modelling VUMAT for a composite. So, in my model I have inotropic and anisotropic behaviour. I have modelled isotropic behaviour but for anisotropic behaviour I need to use deformation gradient, which is causing errors. CAN ANYONE HELP with DEFORMATION GRADIENT. How to use that, do we need to rotate stress back in corotational form as abaqus manual says if yes then How?
How can we get Rotation matrix in VUMAT, if we can multiply it with stretch I think we have the result. May be an alternative.....
Please help, stuck badly :(
How to assign tensile and compressive stress-strain curve in Ansys.
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Hi everyone
I need help regarding material modelling in Ansys.
Actually we have obtained the stress-strain behaviour for slurry
infltrated fibre concrete experimentally. For FE modelling of a
circular ring of this SIFCON. I want to assign actual values in the
available material models. I tried to input + and - sign for tensile
and compressive stress-strain values respectively in multilinear
isotropic, but it did'nt accept -ve values. Suggestions from experts
are welcome. If anymore detail is needed to clarify this querry I
can provide.