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Dear All,

Please explain me what is central differnce operator, what is the role of central differnce played in Abaqus/Explcit analysis

A few points that might be of general interest:

1. The dates: The date of Huygens' first written down material, which was orally presented to the French Academy of Sciences, is 1678---in contrast to the oft-quoted date of 1690. 1690 was the year of the first, French, publication of these notes (plus other material) in the form of a book.

Hi everybody,

 Can any one explain what is the physical meaning that a stiffness matrix illustrate ? I am a learner at a starting level in this Finite Element Analysis field . There are some questions which I wish to get an idea upon ...

 1. What exactly Stiffness Matrix tells about the structure ? Can you please explain with an example like "Linear Timoshenko Beam or Bernoulli beam or like 4-node plane stress element"....

 2. What is the relation between the eigen values of a stiffness matrix and the corresponding rigid body modes ? 

I am a professor in the Department of Mechanical Engineering at the University of Alberta, Edmonton, Alberta, Canada. I am looking for a PhD student to work in the area of applied mathematics, specifically in solid mechanics (linear elasticity, complex variable methods, boundary integral equation methods) with a possible start date of Sept 2012 or jan 2013.

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Special Issue on Instantaneous Angular Speed (IAS) processing and angular applications

For more information, visit the journal homepage:  http://www.journals.elsevier.com/mechanical-systems-and-signal-processing/

Amit Das         Amit Acharya        Johannes Zimmer          Karsten Matthies

We anticipate the opening of four postdoctoral positions in 2012 to work on statistical aspects of fracture and plasticity,  and in particular on size effects in the fracture of  disordered media and in microplasticity.  The positions will be funded by the ERC Advanced Grant 2011, SIZEFFECTS.



We look for candidates with a strong background in one or more of the following areas:

- statistical mechanics (scaling, critical phenomena, disordered systems)

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