
The schedule for our 2012 training classes is now available. The classes cover the following topics: polymer mechanics, experimental testing, material model selection, and advanced finite element modeling techniques.
I gave a presentation on advanced FE modeling of PLLA intereference screws at the ANSYS User's conference in Boston on Sep 14, 2011. In my presentation I discussed how the design of degradable screws can be optimized for use in Anterior cruciate ligament (ACL) reconstruction surgery. PLLA is a non-linear viscoplastic material that can be accurately modeled using the PolyUMod library.Here's a suggestion:
Print, to a text file, the stress at some time t+dt, and the six stress vectors corresponding to the perturbed states. Then post them here. Let's take a look at it all.
Also,...
Hi All,
I was wondering if the viscoelastic properties of vulcanized natural rubber are available somewhere. I intend to couple those properties with the basic stress-strain curves for simulation...
Hi Jorgen,
I was able to curve-fit by unchecking the "Use Normalized Error" checkbox in the curve-ftting dialog in ANSYS. I'm not exactly sure what purpose it serves, but the fits are good now.
...
Try to find publications discussing the implementation of other 3d SMA models.
Or post on iMechanica.org

Assigning periodic load and energy
Hi guys,
muthismat Today, 01:23In a project I am involved, I have to perform a failure/fatigue analsys in ABAQUS. So I have a question and need your help:
In my assignment, I have to give constant pressure and...