Non-planar crack growth (X-FEM and fast marching)
In the attached manuscript, we have coupled the extended finite element method (X-FEM) to the fast marching method (FMM) for non-planar crack growth simuations. Unlike the level set method, the FMM is ideally-suited to advance a monotonically growing front. The FMM is a single-pass algorithm (no iterations) without any time-step restrictions. The perturbation crack solutions due to Gao and Rice (IJF, 1987) and Lai, Movchan and Rodin (IJF, 2002) are used for the purpose of comparisons.
Stretching and polarizing a dielectric gel immersed in a solvent
This paper studies a gel formed by a network of cross-linked polymers and a species of mobile molecules. The gel is taken to be a dielectric, in which both the polymers and the mobile molecules are nonionic. We formulate a theory of the gel in contact with a solvent made of the mobile molecules, and subject to electromechanical loads. A free-energy function is constructed for an ideal dielectric gel, including contributions from stretching the network, mixing the polymers and the small molecules, and polarizing the gel.
Foods and Composite Materials
Foods are good examples of composite materials that everyone can relate to. From foams like ice creams to emulsions like spreads to hydrogels like jams to viscoelastic solids like cheese to porous, brittle solids like crisps, the properties of these multiphasic, heterogeneous materials are most important in the mouth where they are broken down via mechanical, chemical or thermal means. Unlike many structural materials where the design strategy is to achieve the highest strength or toughness, foods are designed to break down in a particular manner and only under particular condit
Prof. Jose E. Andrade to be awarded the 2006 Zienkiewicz medal
Professor Jose E. Andrade from Northwestern University is the
recipient of the 2006 Zienkiewicz medal awarded biennially by the
Institution of Civil Engineers from London. The award goes to Andrade
for his contribution entitled ' Capturing strain localization in dense
sands with random density' in IJNME 2006; 67:1531-1564 DOI:
10.1002/nme.1673 (link: http://www3.interscience.wiley.com/cgi-bin/fulltext/112519037/PDFSTART)
recipient of the 2006 Zienkiewicz medal awarded biennially by the
Institution of Civil Engineers from London. The award goes to Andrade
for his contribution entitled ' Capturing strain localization in dense
sands with random density' in IJNME 2006; 67:1531-1564 DOI:
10.1002/nme.1673 (link: http://www3.interscience.wiley.com/cgi-bin/fulltext/112519037/PDFSTART)
Our sincerest congratulations to Prof. Andrade!
Research Directions in Computational & Composite Mechanics
A Report of the United States National Committee on Theoretical and Applied Mechanics (USNC/TAM), June 2007
A MD simulation of nano-void growth in Copper under uniaxial tension
Recentely we did a MD simulation work on the nano-void growth in Copper, welcome to my blog for any discussion..
Why Impact Factor of Journals in the field of mechanics is Too Low in comparison with Chemistry?
Why The Impact Factors of Journals in the field of mechanics is Too Low in comparison with Chemistry?
Research Positions in Modeling of Solids and Structures
Please see attachment for details of Computational Mechanics researcher openings at Industrial Research (www.irl.cri.nz), a Crown Research Institute in beautiful New Zealand.
The role involves the application of advanced modeling and simulation methods to research on solids and structures, with an emphasis on complex systems such as composites and meta-materials, or solids with multiple defects and discontinuities.
The position is research oriented but also provides opportunities to consult with industry on commercial projects.
Candidates with expertise in theory and computation of elastic wave propagation, the mechanical behavior of composites, structural dynamics, or acoustics are encouraged to apply.