Blog posts

Are all 3D-Cracks mix-mode cracks?

Submitted by Y. Wang on Thu, 07/10/2008 - 12:17

I followed this blog with interest for several weeks before I decide to ask my first question. As a newcomer in fracture mechanics, I got confused with a FE-Analysis several days ago, which calcultes the J-Integral of a 3D-crack. Ich transferred the J-Integral calculated using FEM (ADINA) to K (stress intensity factor) and found that the calculated FE-Value is 50% greater than the value acording to the IWM-Methode, which is developed to calculate the K-factors für crack in cylinders.

composite materials

Submitted by sudheeshsukumaran on Thu, 07/10/2008 - 06:22

education

how to do analysis of cmposite by ansys

Materials: Colourful clay - Nature Materials:

Submitted by Mike Ciavarella on Wed, 07/09/2008 - 21:39

Materials: Colourful clay

Nature

Materials: Colourful clay

Nature 454, 140 (2008). doi:10.1038/454140c

multiple sclerosis in the workplace; discipline as hope to cure disability legally justified

Submitted by spartica@hotmail.com on Wed, 07/09/2008 - 18:47

job

I wish to submit a documented newsworthy Candian superior court decision written in Frenchthat has not yet ciculated widely in English

It shows that an English Canadian university used forced unpaid leaves of absence for harmless clerical typos caught in time despite the cancelled accommodation of an assisted double check having been cancelled because it was too costly.

ABAQUS HEX MESHING - HELP NEEDED

Submitted by satyasrinivas on Wed, 07/09/2008 - 16:32

research

Hi,

I am trying to mesh a solid in CAE using HEX elements. For some reason, I am getting an error message saying that the element topology is not right for the geometry.

I eventually want to do crack analysis and so hex or wedge elements are essential for my model. Could anyone please help me and let me know if there is a way to go around the problem and get a hex mesh on the solid. I am attaching the .jpeg file of the geometry of the solid I want to HEX mesh.

Thanks a lot in advance

Wikipedia on H-index ---- another excellent article, and also very interesting!

Submitted by Mike Ciavarella on Wed, 07/09/2008 - 10:12

h-index

From Wikipedia, the free encyclopedia

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This article is about the index of scientific research impact. For the economic measure, see Herfindahl index.

Uncertainty quantification in mechanics

Submitted by Biswajit Banerjee on Wed, 07/09/2008 - 02:22

research

uncertainty quantification

Modern composite structures have a wide spread in their failure stress. Advanced multiphysics codes can have a wide range of predicted behavior for nominally the same inputs. How do we certify the design of such structures or the accuracy of such codes?