Blog posts
Compositional patterning in coherent and dislocated alloy nanocrystals
Variations in the distribution of the alloy components can significantly influence the electronic properties
of self-organized alloy nanocrystals. Using a combination of finite element and quadratic programming
optimization methods, we have developed an efficient numerical technique to compute the equilibrium
composition profiles in coherent and dislocated nanocrystals. We show that the variations in composition
profiles arise due to the competition between chemical mixing effects and the relaxation of composition-
dependent mismatch strain as well as strain due to dislocations. We find that the composition profiles
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Abaqus error help for radiation
I am runnin simulations for heat transfer analysis counting conduction, when I add the effect of surface radiation to environment with *radiate or *sradiate , I am getting the error message:
***WARNING: Temperature at 1 nodes has fallen below absolute zero. Increment
will be attempted again with a new time increment. The nodes have
been identified in node set WarnNodeTempBelowZeroStep2Inc45.
Comparison of intrapore velocities measured and simulated in the highly macro-porous biscayne aquifer
Using the data from 3D hybrid lattice boltzmann code under parallel environments, some interesting simulated results are obtained by using Tecplot.
Tips:
After download the attached files, please change files name from *.ppt to *.wmv, then they can be display normally by media player
Solution of Mechanics of Composite Materials
Is there anyone willing to give me the students solution manual for MECHANICS OF COMPOSITE MATERIALS by AUTAR KAW (2nd Ed)
It's urgent. I have exam coming up. Please help.
Water diffusion and fracture behavior in nano-porous low-k dielectric film stacks
Among various low-dielectric constant low-k materials under development, organosilicate glasses
OSGs containing nanometer-size pores are leading candidates for use as intrametal dielectrics in
future microelectronics technologies. In this paper, we investigate the direct impact of water
diffusion on the fracture behavior of film stacks that contain porous OSG coatings. We demonstrate
that exposure of the film stacks to water causes significant degradation of the interfacial adhesion
Symmetry breaking, snap-through, and pull-in instabilities under dynamic loading of microelectromechanical shallow arches
Arch-shaped microelectromechanical systems (MEMS) have been used as mechanical memories, micro-relays, micro-valves, optical switches, and digital micro-mirrors. A bi-stable structure, such as an arch, is characterized by a multivalued load deflection curve. Here we study the symmetry breaking, the snap-through instability, and the pull-in instability of a bi-stable arch shaped MEMS under static and dynamic electric loads.<!--break--> Unlike a mechanical load, the electric load is a nonlinear function of the a priori unknown deformed shape of the arch.
Free Size-limited Version of ADINA!
We are offering a free size-limited version of the ADINA finite element analysis software widely used for solving linear and nonlinear structural, heat transfer, CFD and multiphysics problems.
To request your free copy please visit:
Light Activated Polymers
Soft active materials have received increasing interests recently. Here, soft materials can broadly refer to polymers, elastomers, hydrogel gels. Active materials mean that these materials can respond to external stimuli. Examples of soft active materials include shape memory polymers, environmentally responsive hydrogels, liquid crystal elastomers, etc.