Blog posts
How to Assign Initial Solution-dependent State Variable to VUMAT
Hi everyone,
I just constructed a VUMAT which including 3 state dependent variables ( nstatev =3 ), let say these three state dependent variables each have a initial value of 10, 20 and 30, may I know how to assign these initial values into the simulation or VUMAT?
So far I follow the manual to assign the initial value via input file with material properties command as below (the line started with "*Initial Conditions" is line 361):
polymer/metal multiscale
Hi,
I am searching on multiscale simulation of polymer/metal ( mechanical propertices).
Cohesive zone model is used for this porpose.
Is there another models that can use for this issue and using MD data as input?
Best regards,
Hamed
Analytical solution for a partially loaded rectangular elastic thin plate
Hi, everyone:
A rectangular plate, simply supported at four edges, subjected to a partial load- a uniformly distributed pressure over a round area at the plate center. What is the analytical solution for the plate deflection?
Four-year PhD position on modeling of irradiation-induced embrittlement
The Micromechanics of Materials group at the Zernike Institute for Advanced Materials in the Netherlands is looking for a qualified PhD student to unravel irradiation-induced embrittlement in nuclear materials. A detailed description can be found in the attachment. Ideally, candidates have an MSc degree in mechanical or nuclear engineering, (applied) physics, material science or a related field, but holders of a BSc with the highest ranks may also be considered.
Apply before it's too late: June 1.
Simple Cell Traction Force Script for Elastic Micropatterned Substrata
Hi readers,
This is MATLAB code that was written by myself and collaborators that we've sought to make available to the wider research community. The program is intended to track the displacements of micropatterned dots on a substrate in a similar manner to that performed by Maloney et al. in "Influence of Finite Thickness on cellular adhesion-induced deformation of an compliant substrata". Physical Review E. 2008.
Nanoindentation Creep Measurement
Creep can be characterized as the result of a solid material that is slowly and permanently deformed under the influence of stress. Deformation results from the consistent stress below the yield strength of the material. The amount of applied stress and its duration can eventually lead to the failure of the given material. Ultimately, it is for this reason that Nanoindentation creep measurement provides crucial information to study material behavior.
locking in FEM
I have attached notes prepared to better understand locking. This might be useful to FEM guys....
Crystal Plasticity Modelling
Hi all,
I want to set up a critical shear strain - normal stress criterion, in UMAT by prof. Huang. For the strains it is easy to get a critical strain along a slip plane; but for the stresses the notation is quite weird. It is not the same! See below:
C Array STATEV:
C 3*NSLPTL+1 - 6*NSLPTL : current components of normals to slip
PhD position at Delft University of Technology, the Netherlands
We welcome applications for a fully funded 4-year PhD position in the field of computational mechanics and materials science. Further details in the attachment.