Adhesion is a key factor in many tribological processes, especially wear. We generalize a recent formulation for the indentation of a multilayered material using an efficient integral transform method, to the case of adhesion, using a simple energetic transformation in the JKR regime. Then, we specialize the study for the geometry of the Surface Force Apparatus, which consists of two thin layers on a substrate, where the intermediate layer is softer than the other two. We find the pull-off force under "force control" (i.e.

The Department of Mechanical and Aerospace Engineering in the School of Engineering and Applied Science at the University of Virginia seeks candidates for a Research Associate to assist in the development of low-cost carbon fiber techniques in Professor Xiaodong (Chris) Li's lab.

http://ijmf.shirazu.ac.ir/article_5033.html 

Formation of solidification defects and their evolution in uniaxial tensile deformation of solidified polycrystalline aluminum (Al) were investigated by molecular dynamics (MD) simulations. First, solidification process was simulated both isothermally and with different quench rates. At the initial stages of nucleation, coherent twin boundaries and/or fivefold twins formed depending on the quench rate or the undercooling temperature. The solidified polycrystalline Al consisted of randomly distributed grains, twin boundaries, and vacancies.

There are immediate openings for candidates in the areas of computational solid mechanics and experimental (bio)mechanics in the mechanical engineering department, University of Illinois at Chicago (UIC). 

Candidates with strong background in numerical simulations (FEA, high performance computing, ...), in experimental characterization of materials, or biochemistry and molecular biology are encouraged to apply. 

In this paper we formulate the problems of nonlinear and linear elastodynamic transformation cloaking in a geometric framework. In particular, it is noted that a cloaking transformation is neither a spatial nor a referential change of frame (coordinates); a cloaking transformation maps the boundary-value problem of an isotropic and homogeneous elastic body (virtual problem) to that of an anisotropic and inhomogeneous elastic body with a hole surrounded by a cloak that is to be designed (physical problem).

We have an opening PhD Position at our Institute of Mechanics, Otto von Guericke University Magdeburg (Germany).
The candidate should work in the field of "coupling of fictious domain methods and the boundary element method for the analysis of acoustic metamaterials".
Attached you will find the corresponding job advertisement.
Futher questions will be answered by my postdoc Dr. Fabian Duvigneau (fabian.duvigneau [at] ovgu.de).

https://doi.org/10.1016/j.matdes.2018.04.022

Highlights

Recent decades have seen intense developments of hydrogel applications for cell cultures, tissue engineering, soft robotics, and ionic devices. Advanced fabrication techniques for hydrogel structures are being developed to meet user-specified requirements. Existing hydrogel 3D printing techniques place substantial constraints on the physical and chemical properties of hydrogel precursors as well as the printed hydrogel structures. This study proposes a novel method for patterning liquids with a resolution of 100 μm by using the capacitor edge effect.

The Mechanical Engineering Department at Johns Hopkins University is seeking a postdoctoral fellow to work on a project with the Security Technologies Group in the Material Measurement Laboratory at the National Institute of Standards and Technology (NIST) in Gaithersburg, MD.