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What are the regular iteration steps of cohesive model based FEM for crack problems

Submitted by Wen Ye on

   Hi, 
         I'm now start to learn cohesive zone model based FEM for crack problems. According the a regular coehsize model (bilinear for example), the relative displacement and the cohesive stress are both unknwon, so iteration is required. My question is that what are the regular iteration steps?
 
Thanks. 

Doing Topology Optimization Explicitly and Geometrically - A New Moving Morphable Components Based Framework

Submitted by Xu Guo on

    Structural topology optimization, which aims at placing available material within a prescribed design domain appropriately in order to achieve optimized structural performances, has received considerable research attention since the pioneering work of Bendsoe and Kikuchi. Many approaches have been proposed for structural topology optimization and it now has been extended to a wide range of physical disciplines such as acoustics, electromagnetics and optics.

Running a Matlab job in batch mode on a research server

Submitted by Nan Hu on

Hi, all,

I  was trying to run a Matlab m file to do some post precessing in my optimization loops. I need to run it as a batch mode without opening either Matlat interface or command window. I was trying multiple ways and it doesn't work. Any experience on this, PLEASE let me know! 

So, my question simply as "I need to run obj.m and get design.txt". I've already used fopen and fprintf to write output txt file. I need to know how to run this obj.m file! Thanks.

Best Regards,

Aaron 

Ultra high speed imaging of impact fracture

Submitted by D.Rittel on

Here are some movies of impact fracture of various test cases, recorded at up to 5Mfps using the new Kirana camera. The sensor is not the final one yet, but the results are promising. Wedge loaded PMMA plates with holes reveal very nice crack branching (somewhat analogous to fireworks). My students Y. Rotbaum and A. Godinger who performed to test cases thought that Haendel "lascia chio pianga" is appropriate. I don't take a stance on that!

Enjoy: