Dear all,
I would like to ask you how is it possible to import into abaqus a 2-D or a 3-D Voronoi structure. so far I ve been able to create my grains into Matlab or fortran but I dont know how to import them into abaqus.
All the best,
Panos
Dear all,
please find information about the 5 day - course on Plasticity and Microstructures at CISM Udine, Italy.
The link is:
http://www.cism.it/courses/C1104/
Flyer is attached.
Best regards,
----------------------------------------------------------------------------------
Original post from CISM website:
Dear all,
I would like to ask you something about prof.
Huang's subroutine. I want to verify the code, by using published
stress-strain data. But when I am plotting my stress -strain curve I am
always getting a straight line instead of a curve that shows the hardening effect. What could be a reason for this problem?
Regards,
Panos
p.s. I am using a single crystal, single element, and only modify the crystal orientation
Dear all,
I am trying to produce a metallic grain structure using Voronoi. I am currently using Matlab. Does anyone know how I can control the area of the polygons-grains (impose a Gaussian distribution)? And another point is how can I assign the grain orientation for every polygon?
Regards,
Panos
The project is based on the well-known size effect exhibited by metals, i.e
the fact that their strengths are greatly enhanced when at least one
microstructural lengthscale is scaled down to the nanometer range or
when the size of the object is restricted to the micron or sub-micron
range. At these scales the interfaces and their associated properties
play a significant role. This project will focus on the effect of
spatial confinement on the three most common deformation mechanisms:
dislocation glide, mechanical twinning and mechanically-induced
martensitic phase transformations; and will be based on the synergies
between physically-based phenomenological modelling using
strain-gradient plasticity at the highest scale, and thorough
Hi everyone,
I want to know if there are some opensource softwares to transfer the x-ray raw data to representative discrete pole figure data by Euler angles ? Now I know how to calculate ODF from x-ray raw data with the help of "Mtex". But I dont know how to get representative discrete pole figure data by Euler angles, which is used for CP numerical simulation, from ODF.
Thank you very much!
Shunlai
Hi
***ERROR: THE SOLUTION-DEPENDENT STATE VARIABLE INDEX MUST BE AN INTEGER",
this is a error which pops out when i try to run Huang's single crystal UMAT. Do anybody have experienced the same kind of error
Karthic
|
INELASTICITY OF MATERIALS- An Engineering Approach and a Practical Guide
by Arun R Srinivasa (Texas A&M University, USA) & Sivakumar M Srinivasan (Indian Institute of Technology, Madras, India) |
Classical plasticity models evolve state variables in a spatially independent manner through (local) ordinary differen-
tial equations, such as in the update of the rotation field in crystal plasticity. A continuity condition is derived for the
lattice rotation field from a conservation law for Burgers vector content—a consequence of an averaged field theory
of dislocation mechanics. This results in a nonlocal evolution equation for the lattice rotation field. The continuity
Hi everyone, in my size dependence study, I find the local energy dictating dislocation emission is almost constant for varied sized samples, in given directions of single crystal. I don't know this is an interesing finding, or just a common sense. Will you give me some suggestion, Thank you!
Kejie
