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A crucial text from Jim Rice of his Timoshenko's medal speach.

Submitted by Mike Ciavarella on
education
collapse of science
publishing system
academic promotions
saturation



It is difficult to reminisce over my own formative years without sensing

the sharp contrast with the far more difficult situation faced by the

young generation today. My generation, and especially my own narrow age

range within that generation, had things easier, I think, than any group

before or after. I entered Lehigh for undergraduate studies one year

after Sputnik. It was a time when support for science and engineering

was enlarging fast, when opportunities were abundant. There were plenty

Web 2.0 and Medicine

Submitted by MichelleLOyen on
education
web 2.0
bioengineering
medicine

I stumbled across this interesting blog post yesterday concerning an upcoming course on medicine via web 2.0.   It appeared quite interesting from several perspectives: first, medicine is often associated with being behind the times on technology but this all looks pretty current, secondly it may be the most comprehensive listing of topics I have seen where web 2.0 is applied to a single discipline, and finally it made me wonder what more we could do with mechanics via web 2.0 beyon

Professor Zhigang will give lectures at Tongji University, Shanghai China

Submitted by zhan-sheng guo on
education

from the prof. Ying Dai:

Prof. Zhigang will give two lectures on 1:45pm, 29 May, 2008 at Tongji University, Shanghai China.

Position is the second floor meeting room of Run Run Shaw building.

 1. from Learning Harvard University to The National Academy of Engineering (NAE) of American

2.  Mechanics of Soft Active Materials

Composite Modelling in Abaqus

Submitted by tyvan07 on
education
modelling
composite
carbon

Hello,

 Pardon my basic question.  I need to model a carbon fibre sheet using Abaqus 6.7.  I cannot seem to get the composite layup tool to work properly and I do not know how to define the material properties for carbon fibre.  Are there any good online turorials I can use to do this?  My part will be 8-ply, 125mm square, ~1mm thinck.  Any help is appreciated.

 

Thanks,

 

Tyler

Mechanics of Soft Active Materials

Submitted by Zhigang Suo on
education
suo group research
elastomer
hydrogel
slides

At the invitation of David Clarke on behalf of the UCSB/Los Alamos Institute of Multiscale Materials and Structures, I gave the following three lectures:

  1. Large deformation and instability in dielectric elastomers
  2. Large deformation and instability in swelling polymeric gels
  3. Mechanics and electrochemistry of polyelectrolyte gels

The abstracts follow, and the slides are attached at the end of this post.

Rotating Beams/Frequencies/Errors/Abaqus input file attached

Submitted by DJackson on
education

Im trying to model a rotating uniform beam for 12 rotational speeds in Abaqus using c3d20 elements. As expected, "step 1 to step 5" the frequencies increase as the rotational speed is increased. However, for some strange reason, the frequencies stop varying from the fifth speed. I do get warning messages when running the input file but i cant intepret them well since Im new to Abaqus.

I believe the problem is elementary but i cant figure it out. Can anyone review or run the attached input file to let me know what I  am not doing or what exactly is wrong.

Short course FRACTURE, SCALING AND SIZE EFFECT

Submitted by Arcady on
education

Scaling of fracture strength, fracture energy and toughness is an important issue when it comes to predicting the behaviour of large-scale structures on the basis of laboratory scale measurements. Historically the work of Leonardo da Vinci and Gallileo is well known, followed by the statistical weakest link theory derived by Weibull in 1939. Weibull scaling is a statistical approach assuming instantaneous failure when the weakest link in a material structure fails.

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