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Maximum entropy coordinates for arbitrary polytopes

Submitted by N. Sukumar on
research
barycentric coordinates
arbitrary polygons
maximum entropy

In the attached paper, we construct new generalized coordinates for arbitrary polytopes in d-dimensions (polygons and polyhedra in 2- and 3-dimensions, respectively) using the principle of maximum entropy. The paper is to appear in Computer Graphics Forum and will be presented at the SGP'08 Conference in Denmark.  

Load-displacement curve for concrete

Submitted by Gouse on
research
crack propagation
smear cracking model

Hi

I am trying to predict load-displacement curve for concrete cube numerically through ABAQUS. I am just beginer with ABAQUS, I have gone through the concrete material models available in ABAQUS. I found that smeared crack model well suite for analysis. Initially I am simulating a 2D model, I am using plane stress elements with static, Riks options, even I could able to complete the analysis, I am confused how to view the cracked elements and how to plot load-displacement curve.

Leonardo da Vinci the precursor of Publish AND Perish ---- not Publish OR Perish -- the present model is dead!

Submitted by Mike Ciavarella on
research
research
old publication model
leonardo da vinci
return to nature
Dear Imechanica friends
  I recently pointed to a very interesting paper by Fabio Casati and collegues from Trento University in Italy.
They say PUBLISH AND PERISH: WHY THE CURRENT PUBLICATIONAND REVIEW MODEL IS
KILLING RESEARCH AND WASTING YOUR MONEY
as opposed to the current mania to PUBLISH and killing yourself with writing papers.

How to get the FEM mesh from the optical micrography picture files with extension .tif or gif...

Submitted by hamanh on

Dear all,

 I am trying to simulate the local stresses and strains in a dual-phase metal and total behaviour of this metal in ABAQUS-6.7, what I have is the optical microscopic pictures of phases inside the metal which has been measured by some help of physicists. The pictures are of extension file name .tif ad .gif. How could I construct a mesh in Abaqus with this colorful pictures ?

Any help is appreciated much. Thanks in advance

Regards

Hamanh

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