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Hello! I am modelling crack propagation in concrete specimen under direct tension by using cohesive element in ABAQUS as the interface where crack will propagate. By setting up the proper values of the parameters, I could model the exact behavior prior to the cracking, however, when changing some parameters to get the interface cracked, the model committed to be diversed. I have tried some little skills like viscosity and energy disspation fraction, but it was still not working.

An Immediate vacancy exists for high calibre  postdoctoral fellows with interest in multiscale computational nanomechanics, nano-modified composites,  testing and validation. Specifically, we are interested in determining the influence of nanofillers on polymer composites. Candidates should expect excellent facilities, good salaries and exceptional working conditions.

On behalf of Imperial College Press, World Scientific Publishing Co. (Singapore) and the International Journal of Applied Mechanics (IJAM), I would like to invite you to submit an article for our forthcoming journal, which will be launched in March 2009.  Given your expertise in Mechanics, your contribution to the inaugural issues of IJAM would be most desirable in our effort to make IJAM a leading journal in its subject area.

For those interested in a classical subject like contact mechanics, here are a couple of recent papers published in August.  One is an extension of the Greenwood Williamson theory of rough contact, and the other is a linear perturbation solution of the classical Carter rolling contact problem for a rolling cylinder, when the surface is corrugated and hence there are oscillations in both normal and tangential loads.