Crack growing and fracture criterion
Dear iMechanicians,
First I'd like to thank the ones sharing their lecture notes, it's
very helpful for someone who is learning fracture mechanics by himself like I
do.
Nevertheless, I would have some questions regarding the
energetic aspect of the crack propagation. Please do not hesitate to correct me
if I am wrong. Questions are related to this lecture note, from Professor Suo: node/7507
PhD scholarship in Diesel Engine Tribology
A PhD scholarship is available at DTU Mechanical Engineering, Section for Solid Mechanics, in the field of diesel engine tribology. The scholarship focuses on computational modelling and experimental verification of fluid film and bearing parts of journal bearings in large two-stroke diesel engines. The department has well-established research activities in these fields and the present scholarship is partly funded by the EU-project Hercules-C. The research activities will be performed in close cooperation with MAN Diesel & Turbo SE located in Copenhagen.
Vibrations, Shocks and Noise: 2012 Paris
The next conference Vibrations, Shocks and Noise will take place in Paris: July 3-5, 2012.
Covariantization of Nonlinear Elasticity
In this paper we make a connection between covariant elasticity based on covariance of energy balance and Lagrangian field theory of elasticity with two background metrics. We use Kuchar's idea of reparametrization of field theories and make elasticity generally covariant by introducing a "covariance field", which is a time-independent spatial diffeomorphism. We define a modified action for parameterized elasticity and show that the Doyle-Ericksen formula and spatial homogeneity of the Lagrangian density are among its Euler-Lagrange (EL) equations.
26th issue of the WW-EAP Newsletter is now available
The 26th issue of the WW-EAP Newsletter is now available at:
http://ndeaa.jpl.nasa.gov/nasa-nde/newsltr/WW-EAP_Newsletter13-2.pdf
This newsletter on the field of electroactive polymers, edited by Dr. Yoseph Bar-Cohen, addresses the need for rapid communication of progress in the field and state-of-the-art capabilities.