Blog posts
vumat of an anisotropic material
hello everyone
i want to model an anisotropic material(hill or barlat) in ABAQUS, in the VUMAT,but I don't know how to set some para such as R0,R45,R90
could you give me a vumat ?
Cell sensitivity to substrate stiffness
Cell sensitivity to substrate stiffness
Submitted by Daniel Isabey on Wed, 2009-04-15 15:03.
In Féréol et al. (Biophys. J., 2009, 96: 2009-2022),
we propose a coupled theoretical and experimental study in order to understand the
mechanism of cell sensitivity to substrate stiffness. To do so, we first consider
that adhesion sites pass through different stages of development, e.g., Initial
Adhesion (IA), Focal Complex (FC), Focal Adhesions (FA), characterized by the
fatigue analysis
hi,
Is it necessary to carryout the linear static analysis first before doing the fatigue analysis.
If the stress exceeds the UTS , still can we caryyout the fatigue analysis.
sagar.
dynamic crack initiation
Hello everyone, I am studying the dynamic crack initiation problem of composite material. Just like the below imagine ,a crack perpendicular to the interface of two different materials, under dynamic load, the crack will propagate, at the crack tip I use the singular element to simulate the stress and strain state. after I have the crack tip stress, how can I calculate the energy release rate of different direction, for example, also along the original crack line or perpendicular to the original crack line., or kink from the 45 degree of original crack line.
Probelm with Abaqus/Explicit
Hi,
I am using cohesive elements to model the interface around a
circular inclusion. First I used Abaqus/standard I got proper results
but when I used same values with an amplitude curve (tabular, linearly
applied) to apply load quasi-statically in Abaqus/Explicit, I could not get a converged
solution. Field variables are oscillating and elements getting
distorted excessively. In Abaqus/Explicit I am applying load very
slowly but even though same problem persists.
Regards
Gouse
LS DYNA User Defined Failure Criterion
Hi:
I am simulating a projectile impact on a plate and using LS - DYNA for the same.
I have to use Barlat's anistropic plasticity model with the Johnson Cook Failure Criterion.
Now, Although Barlat's Model is in built into LS DYNA, how do I implement JC Failure criterion ? Is there a feature of User defined failure criterion in DYNA ?
If not, Is implementing a UMAT consisting of Barlat's consitutive eqn and JC failure criterion the only other option ?
Thank You,