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A challenge to Mr. Koenemann

Submitted by Chad Landis on
research
challenge

I am sure that several of you have followed Mr. Koenemann's posts with some interests.  For some it might be entertainment, and for others it might be like watching a car wreck.  In any case, several iMechanicians have attempted to convince Falk that his theories do not make sense.  We have all failed miserably at that task.  I am perhaps a bit slower than most, but it is clear to me that Mr. Koenemann will not be convinced by any physical or mathematical arguments.

Coupled Eulerian Lagrangian Analysis

Submitted by kunal_mecadcam on
research
Eulerian-Lagrangian Coupling
Fluid Structure Interaction

Hi every one,

 I am in my final stage of my dissertation, which is about slamming analysis of boat hulls with help of CEL - in Abaqus. I am currently working in how to validate the results which I got. Is there any way except experimental method to validate the stress - strain results?

Please help me...

 Regards

Kunal Baxi

M.E.- CAD/CAM

Cell sensitivity to substrate stiffness

Submitted by Daniel Isabey on
research

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

CONTACT in ABAQUS: HARD and SOFT contact techniques

Submitted by Mubeen on
Forums
Contact Mechanics Forum
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contact analysis
Abaqus/Standard
Pressure-Overclosure relations
Constraint enforcement methods

Hello,

I am using Abaqus for nonlinear FEA of contact between material1 (soft foam like) and material2 (hard plastic type) in vertebrae for my thesis. I have encountered many problems during this exercise, because I have to include the results of various contact conditions in this situation with friction. I am trying to get results for 

  •  Hard contact (using penalty constraint enforcement)
  •  Soft contact (using linear and exponential Pressure-Overclosure relations)

The major problem is convergence during both analyses.

Probelm with Abaqus/Explicit

Submitted by Gouse on
research
ABAQUS
cohesive zone model

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 

ANSYS CONTACT Pair Problem

Submitted by hijazi on
research

I am doing analysis in ANSYS which requires the contact pair to be defined. I am unable to select an appropriate value of Pinball region, Penetration Tolerance and normal penalty stiffness. Does any body have an idea how to select the good values for better solution? If you have anykind of material related to contact pair kindly email me at hijazi.19 [at] gmail.com (hijazi[dot]19[at]gmail[dot]com)

 Thanks

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