Katia Bertoldi, of Harvard University, has graciously our invitation to be Editor of the iMechanica Journal Club. Katia has a knack to organize really interesting and inspiring symposia and workshops. Here are two examples:
Hi there, I'm kind of new in iMechanica despite that I've registered for more than one year. I've read many posts containing helpful information, but never posted my own until now.
Dear Friends,
I have developed a ser of 2-D finite elements for the problems of structural mechanics. These two dimensional elements are capable of accurately predicting three dimensional stress states using three diemnsional constitutive law. My doubt is: can these elements be used for the analysis of 3-D crack propagation using XFEM?. The displacements chosen for these elements are simple.
Subramanian
PRL 106, 248302 (2011) The atomic scale lithiation mechanism of individual SnO2 nanowires in a flooding geometry was revealed by in situ transmission electron microscopy. The lithiation was initiated by the formation of multiple stripes with a width of a few nanometers parallel to the (020) plane traversing the entire wires, serving as multiple reaction fronts for later stages of lithiation.
Stephan Rudykh (a), (c), Kaushik Bhattacharya (c) and Gal deBotton (a), (b)
When we topologically classify the defects in ordered media, we consider the character of the fundamental group of the associated order parameter space. To construct those groups, we circumscribe the line defects by circles and the point defects by spheres.
My question is what is done for a surface (possibly infinite) defect, say domain walls. My query primary concerns crystal lattices. I want to characterize the essential defects in solid crystals--for dislocation and interstitial/vacancy, it is straightforward. But what to be done in case of grain/phase boundary?
