Blog posts

PDR in Computational Mechanics Research Laboratory, Johns Hopkins University

Professor Somnath Ghosh

sghosh20 [at] jhu.edu                https://cmrl.jhu.edu/

There are two hydraulic universal testing machine designs. The first uses a single sided ram to apply force and requires gravity for the piston to return home. This type of hydraulic testing machine is the most common and is used for static tests only. A schematic of a ram based hydraulic tester is shown in Figure 1. The second type of hydraulic machine uses a dual acting piston. The dual acting piston design provides control in both the up and down direction and is commonly used for fatigue testing applications.

KTH Royal Institute of Technology (Stockholm, Sweden) is offering a post-doc position on modeling fiber suspension flows using isogeometric analysis.

https://www.kth.se/en/api/2.61673/what:job/jobID:410765/where:4/

Please, apply!

Looking for postdoctoral researcher with experience in the area of topological mechanics and/or acoustics, or nonlinear mechanics/dynamics to join the Boechler Research Group (http://boechler.ucsd.edu/) in the Department of Mechanical and Aerospace Engineering at the University of California, San Diego. A solid theoretical background in the aforementioned area, as well as strong communication skills are desired. The initial appointment would be for one year, with a potential for extension.

By Yuzhen Chen, Lihua Jin

Self-assembly of three-dimensional (3D) structures, through bending, twisting, folding, and buckling, has garnered broad interest among physicists, mathematicians, chemists, and biologists. Herein strain engineering and geometric frustration as an on-demand strategy for fabricating spontaneous rolling “origami” structures with programmable multistability across multiple length scales are exploited.

The design of a dynamic, versatile, convertible, and responsive micropatterned system is realized by a photo/moisture reconstructible multiscale film-substrate bilayer structure. Specifically, a hydrophilic polyvinyl alcohol (PVA)/laponite (LP) thin film is covalently bonded to a photothermally active polydimethylsiloxane (PDMS)/carbon black (CB) soft substrate. A laser engraver can inscribe programmable aligned micro-wrinkles by manipulating laser power and spatiotemporal control.

Check out our paper at Materials Today: https://www.sciencedirect.com/science/article/abs/pii/S1369702120304491