http://groups.google.com/group/F-E-A
Invitation to join the Finite Element Analysis Google Group.
Many information about finite element analyses is added by users.
On the need for popular science articles by mechanicians
Recently, the Royal Society Science book prize shortlist was announced; though the shortlisted books cover psychology, evolution, biodiversity, medicine and neurobiology, none in the area of materials or mechanics made it to the list. Or, pick any Best American Science writing volume--there are hardly any articles about materials or mechanics that make it to these anthologies.
Instabilities
- Free energy and generalized coordinate. Equilibrium and stability
- Control parameter
- Configurational transitions of two types
- Critical point of configurational transition of the second type. Bifurcation analysis
- Behavior near a critical point. Post-bifurcation analysis
- Load-displacement relation near a critical point
- Koiter's theory of imperfection sensitivity
- A family of systems of many degrees of freedom
- Mode of bifurcation
- Vibration in the neighborhood of an equilibrium configuration
The 2007 Melosh Medalists
The 19th Annual Melosh Competition for the Best Student Paper in Finite Element Analysis was held last Friday, April 27, at ETH Zurich. Two medalists were selected this year from the six finalists. The 2007 Melosh Medalists are Vikram Gavini, from Caltech, and Michael Hain, from Leibniz University, Hannover.
David Turnbull died on 28 April 2007
David Turnbull died peacefully at home last Saturday, April 28th, at age 92.
He was for many years Gordon McKay Professor of Applied Physics at Harvard University. His seminal work included theoretical and experimental studies of nucleation of crystals, the glass transition and the amorphous state, crystal growth, and atomic diffusion.
Journal Club Theme of May 2007: Experimental Mechanics of Nanobuilding Blocks
Welcome to the May 2007 issue. This issue focuses on experimental nanomechanics of nanobuilding blocks. The extremely small dimensions of nanobuilding blocks (for instance, nanoparticles, nanotubes, and nanowires) have imposed great challenges to many existing instruments, methodologies, and even theories. In this issue, we will discuss – (1) experimental techniques and (2) size-effects.
Super stretchy carbon nanotubes
Huang et al., PRL 98, 185501 (2007)
Watch movies at: http://netserver.aip.org/cgi-bin/epaps?ID=E-PRLTAO-98-002719
We report exceptional ductile behavior in individual double-walled and triple-walled carbon nanotubes at temperatures above 2000 C, with tensile elongation of 190% and diameter reduction of 90%, during in situ tensile-loading experiments conducted inside a high-resolution transmission electron microscope. Concurrent atomic-scale microstructure observations reveal that the superelongation is attributed to a high temperature creep deformation mechanism mediated by atom or vacancy diffusion, dislocation climb, and kink motion at high temperatures. The superelongation in double-walled and triple-walled carbon nanotubes, the creep deformation mechanism, and dislocation climb in carbon nanotubes are reported here for the first time.
Surface roughness evolution
With a shallow chemical etching the roughness with spatial frequency below a critical value grows while the roughness of higher frequency decays.
NSF Proposal Writing Workshop
Subject: NSF Proposal Writing Workshop ( August 22-23, 2007 - Alaska)
Sponsored by NSF, a Proposal Writing Workshop will be held on August 22-23, 2007, at University of Alaska-Fairbanks. The workshop mainly aims to provide future proposal submitters (in all disciplines funded by NSF) with knowledge and tools to write good proposals, proposal review experience, and it will enable interactions with NSF program directors and recent NSF awardees. The event is targeted at an EPSCoR state, Alaska. However, the workshop is open to participants from other states as space permits.