composite material data
hi, i want yield stress and plastic strain data for aluminium and epoxy resin.actually i m doing project on composites.....
Genetic algorithm for function optimization with Matlab
Hi, Matlab experts !
Did someone work with Prof. Houck's paper (A genetic algorithm for function optimization: A Matlab implementation, 1995) on the genetic algorithm ?.
In his paper he proposes 3 online tutorials (gademo1.m; gademo2.m; gademo3.m) for working with the function "ga" in Matlab but it's all for Matlab 5. This function syntax has changed considerabily in Matlab 7. The key point is that we cannot define "bounds" which is a matrix of upper and lower bounds on the variables with Matlab 7.
So how Matlab 7 deals with this problem ?
Finite Element Analysis of Thermo-Viscoelastic Problem
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Hi,
I am trying to develop a finite element code to capture the residual stresses during the cooling of a viscoelastic body.
Can anyone suggest references or papers that address the finite element formulation of a thermoviscoelastic problem? I have found a couple of papers, but they do not seem to directly apply to what I want.
Thanks,
Shriram
Research Assistant
University of Florida
bifurcation buckling using ABAQUS
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The following is taken from the book Concepts and applications of Finite element methods by Cook, Malkus and Plesha.
For bifurcation buckling, we have the following eigenvalue problem:
(K+Lambda Ksigma)delta d= 0
Three postdoctoral positions at Lawrence Livermore National Laboratory
The Computational Physics group in the Atmospheric, Earth, and Energy Division at the Lawrence Livermore National Laboratory (LLNL) is solicitating applications for three postdoctoral appointments in the following areas. To access the full description and application instructions, please visit http://jobs.llnl.gov and search for the job numbers below:
008351: geomechanics of fluid-induced fault activation
008374: dynamic impacts into granular materials
008375: mechanics of dynamic impact and penetration into ceramics
Journal Club Theme of May 2009: Configurational forces in finite elements - energy-based mesh adaptation
*This issue of the Journal Club has been prepared as a group by Ankush Aggarwal, Mo Bai, Mainak Sarkar, and Jee E Rim, and with comments and suggestions from Bill Klug .
USNCTAM Address 2009
Check out the talk by Dr. Arden L. Bement, Jr., Director , National Science Foundation
on TAM
at http://www.nsf.gov/news/speeches/bement/09/alb090424_tamsymp.jsp?govDel=USNSF_51
For the proceedings of the 2008 SBE&S workshop go to
FRANC3D - the next generation
I guess it is about time some one from the Cornell Fracture Group got on this site to try help answer questions related to the CFG software or other fracture mechanics related questions. We do try to answer questions sent to us via email, but sometimes a forum like this would be best and we do appreciate other users input, feedback, and answers.
Tom Hughes elected to National Academy of Sciences
Congratulations to Tom Hughes for the election to the US National Academy of Sciences. See the full list of the new members.
President Obama on the Necessity of Science (video)
Obama spoke at the National Academy of Sciences on Apr. 27, 2009, in which he states his commitment to doubling of science funding and stem education. From his speech,
"At such a difficult moment, there are those who say we cannot afford to invest in science, that support for research is somehow a luxury at moments defined by necessities. I fundamentally disagree. Science is more essential for our prosperity, our security, our health, our environment and our quality of life than it has ever been before."