One PhD position is available for Fall 2020 in the Department of Mechanical Engineering at Stony Brook University, New York Long Island. The research program focuses on the mechanics and design of novel advanced materials and metamaterials to achieve high mechanical performance, new wave propagation features, and multifunctional characteristics. The candidates with background in solid mechanics and finite element analysis are highly encouraged to apply.

The PhD position is fully funded. Stony Brook University is located 60 miles from New York City on Long Island's scenic North Shore. The University is a member of the prestigious Association of American Universities and co-manager of nearby Brookhaven National Laboratory (BNL).

The online application deadline is January 15, see http://me.eng.sunysb.edu/admissions/graduate.html

If you are interested, please contact Dr. Wang at Lifeng.Wang@stonybrook.edu (http://me.eng.sunysb.edu/~wanglf).

One PhD position is available immediately in the Department of Mechanical Engineering at Stony Brook University, NY, US. The research program focuses on the mechanics and multifunctional applications of 3D periodic composite materials including shape memory, acoustic/elastic wave propagation, and energy harvesting. The candidates with background in solid mechanics and finite element analysis are highly encouraged to apply.

If you are interested, please contact Dr. Wang at Lifeng.Wang@stonybrook.edu (http://me.eng.sunysb.edu/~wanglf).

Dear Colleagues,

We would
like to bring your attention to the symposium "Elasticity,
Plasticity, and Multiphysics of Hierarchical Materials: Mechanisms to
Mechanics" at the 17th U.S. National Congress on Theoretical &
Applied Mechanics, to be held June 15-20, 2014 at Michigan State
University. A detailed description of the symposium can be
found below, and abstracts (due Dec 1, 2013) can be submitted at:

http://www.usnctam2014.org/

"Advances
in materials synthesis and characterization techniques together
with ever increasing sophistication of computational prowess has
enabled concerted efforts toward design and development of
materials with novel architectures such ranging from
hierarchical composites to designer nano-micro lattice structures.
The key idea is to modulate functional characteristics through
microstructural engineering for a variety of applications that
include, but are not limited to, materials used in structural,
biological, thermal, electrical, optical and electronic systems.

The goal
of this symposium is to provide a platform to discuss exciting
progress and challenging questions in the area of hierarchical
materials. It aims at understanding the mechanics issues related
to elastic and inelastic behaviors of a wide range of
hierarchical microstructures such as nano-scaled metals, hybrid
composites, fibrous architectures, lattice structures. Of
particular interest is gaining insight into the
mechanisms-mechanics nexus that would enable translating
principal deformation mechanisms in these material systems into
physically sound constitutive frameworks that enable optimal
design. We further invite contributions highlighting the
multiscale and multiphysics nature arising from the coupling of
the above mechanical phenomena to thermal, electrical, chemical,
or physical stimuli.

The
symposium strongly encourages contributions from the experimental
and modeling perspectives at multiple length-scales and
time-scales."

Sincerely,

Tim Rupert
- University of California, Irvine

Shailendra
Joshi - National University of Singapore

Dennis
Kochmann - California Institute of Technology

All metallic, hollow sandwich cylinders having ultralight two-dimensional prismatic cores are optimally designed for maximum thermo-mechanical performance at minimum mass. The heated cylinder is subjected to uniform internal pressure and actively cooled by forced air convection. The use of two different core topologies is exploited: square- and triangular-celled cores. The minimum mass design model is so defined that three failure modes are prevented: facesheet yielding, core member yielding, and core member buckling. The intersection-of-asymptotes method, in conjunction with the fin analogy model, is employed to build the optimization model for maximum heat transfer rate. A non-dimensional parameter is introduced to couple the two objectives - structural and thermal - in a single cost function. It is found that the geometry corresponding to maximum heat transfer rate is not unique, and square-celled core sandwich cylinders outperform those having triangular cells. The 8-layered sandwich cylinders with square cells have the best overall performance in comparison with other core topologies. Whilst a sandwich cylinder with shorter length is preferred for enhanced thermo-mechanical performance, the influence of the outer radius of the cylinder is rather weak.