Transverse wrinkles usually occur in a uniaxially tensile elastic membrane and will be smoothed upon excess stretching. This instability-restabilization response (isola-center bifurcation) can originate from the nonlinear competition between stretching energy and bending energy. Here, we find a crucial factor, the curvature, which can control effectively and precisely the wrinkling and smoothing regimes. When the sheet is bent, the regime of wrinkling amplitude versus membrane elongation is narrowed, with local wrinkling instability coupled with global bending.

https://doi.org/10.1016/j.mechmat.2019.103200

Abstract

Just submitted a paper on electroadhesion of rough surfaces, greatly simplifying the recent theory of the great Bo Persson , with hot application to touch screens :  see here. 

Comments welcome.

Job Description:

The Department of Mechanical Engineering at the State University of New York at Binghamton invites applications for a tenure-track faculty position in solid mechanics at the assistant professor level beginning Fall 2020.  Candidates must have a PhD in Mechanical Engineering or a closely related field. 

The Additive Microstructure Engineering Laboratory (AddME Lab) in the school of Mechanical and Aerospace Engineering at NTU (Singapore) is a young, diverse, and interdisciplinary research group with interests in in-line microstructure control and assessment during selective laser melting (SLM) processes. In this framework, we are collaborating with the Institute of High Performance Computing under the Agency for Science, Technology and Research (A*STAR), to simulate the microstructure of metals produced during SLM.

Dear Colleagues, 

Please consider submitting abstracts to our mini-symposium at the 14th World Congress on Computational Mechanics (WCCM XIV), Paris, France. The abstract submission deadline is December 15, 2019. 

MS397: COMPUTATIONAL MECHANICS AND MULTISCALE MODELING IN MANUFACTURING OF LOW-DIMENSIONAL MATERIALS AND STRUCTURES

Abstract 

The NUMISHEET conference series is the most significant international conference on the area of the numerical simulation of sheet metal forming processes. Within Numisheet 2020, we are organizing a mini symposium on “Challenges and Opportunities in Forming Aluminum”.

Additive manufacturing of ceramics from preceramic polymers

Following extensive research by our outstanding doctoral candidate here, Dr. Wang, a publication in the journal Additive Manufacturing is now in press.

Nanostructural insights into the dissolution behavior of Sr-doped hydroxyapatite

https://doi.org/10.1016/j.jeurceramsoc.2018.07.056

Full text is available here

Improved oxidation resistance of high emissivity coating s on fibrous ceramic for reusable space systems

Here novel disilicides were explored for use in heat shields. 

WSi2 and MoSi2 were applied as coatings on an insulating zirconia substrate.

The high emissivity of these compounds and their mixtures, makes them very attractive for use in spacecraft.