I am trying to get the shrinkage rate of a void in a finite grain which is simplified as a rectangular region within a circular hole. So I need to find out the stress field to get the chemical potentials.
hi ,
by using EFG with Lagrange multipliers for elastodynamics we will get below two equations .
M (U double dot)+C (U dot) + KU = F (ofcourse C=0 in my problem)
HU=q (q is not equal to zero) (where H= G Transpose)
Granular materials deserve being investigated as this has been the case with liquids, gases and elastic materials.
Hi,
i would be working of development of titanium and nickel functionally graded materials by laser deposition. I would appreciate any suggestions and know-how about this specific topic.
Kamran.
Hello, Can anybody inform me what are the basic difficulties of using point collocation (strong form) kind of method for solving pde's when compared with solving its weak statement? I have listed a few, known to me,
http://en.wikipedia.org/wiki/Project_Habakkuk
I was surprised several years ago when delving into the literature to not find any references about addition of nanoparticles to ice, to study their impact on the mechanics of ice. In short, to make nanocomposites where the matrix is ice. So, with 2 high school students from IMSA, the Illinois Math and Science Academy, we set about (with their limited time for a bit of research) to try adding some nanoparticles to water and to freeze it. The students simply used their home freezers to do this, and their mechanics measurements were with a hammer and chisel...
We extend the pioneering work of J.E. Hirsch, the inventor of the h-index, by proposing a simple and seemingly robust approach for comparing the scientific productivity and visibility of institutions. Our main findings are that i) while the h-index is a sensible criterion for comparing scientists within a given field, it does not directly extend to rank institutions of disparate sizes and journals, ii) however, the h-index, which always increases with paper population, has an universal growth rate for large numbers of papers; iii) thus the h-index of a large population of papers can be decomposed into the product of an impact index and a factor depending on the population size, iv) as a complement to the h-index, this new impact index provides an interesting way to compare the scientific production of institutions (universities, laboratories or journals).
It seems to me that tetrahedral bonding is responsible for life on earth.
One might leap to the (reasonable) conclusion that I am referring to the element carbon and its ability to form sp3 bonds. Life does depend on carbon, no doubt. But where does life exist, by and large?
H. Mei, J.Y. Chung, H.-H. Yu, C.M. Stafford, and R. Huang, Buckling modes of elastic thin films on elastic substrates. Applied Physics Letters 90, 151902 (2007).
Two modes of thin film buckling are commonly observed, one with interface delamination (e.g., telephone cord blisters) and the other with no delamination (i.e., wrinkling). Which one would occur for your film?
