Competition between Mullins and curvature effects in the wrinkling of stretched soft shells
A highly stretched hyperelastic shell exhibits a coupling behavior of local wrinkling and global bending within the stability boundary, and curvature resists and can even suppress surface wrinkles beyond a critical threshold. Here, we report a novel phenomenon that smooth surface maintains upon stretching a soft shell, while wrinkles emerge upon unloading, which implies a nonlinear interplay between curvature and Mullins (stress softening and residual strain) effects in the entire loading-unloading cycle.
About resonant frequency and dental implants
We have analyzed the so-called Resonant Frequency Analysis, a method used to assess the stability of dental implants. In spite of its widespread use, there is only a handful of engineering analyses that define the limits of applicability and the sensitivity of the method. So, here is another example of what I call "Denta; Engineering".
Postdoc positions in computational science at UIUC
Two postdoc positions in computational science are available at UIUC in the research group of Prof. Harley T. Johnson in the Department of Mechanical Science and Engineering and the Materials Research Lab.
Teaching Assistant Professor/Instructor position, emphasis on structures and materials
The Smead Department of Aerospace Engineering Sciences (AES) at the University of Colorado Boulder invites applications for a full-time Instructor to teach in its undergraduate program. The instructor will be a member of the AES faculty and will participate in course development and assessment, faculty governance, and university service.
Postdoc position at Imperial College London on predicting hydrogen embrittlement
The Mechanics of Infrastructure Materials research group are looking to hire a Postdoctoral Research Associate (PDRA) to work in the prediction of hydrogen-assisted failures using computational methods. The Research Associate will work under the supervision of Dr Emilio Martínez-Pañeda and the project is supported by the Electric Power Research Institute (EPRI).
Congrats to Pradeep Sharma for election to NAE!
Sharma, Pradeep, M.D. Anderson Chair Professor and department chair, Department of Mechanical Engineering, University of Houston, Houston. For establishing the field of flexoelectricity, leading to the creation of novel materials and devices and insights in biophysical phenomena.
https://www.nae.edu/270224/National-Academy-of-Engineering-Elects-111-M…
EC Emergency Medicine and Critical Care / ECRONICON Journal
The journal- EC Emergency Medicine and Critical Care / ECRONICON
EC Emergency Medicine and Critical Care
EC Emergency Medicine and Critical Care - ECRONICON Journal
The journal- EC Emergency Medicine and Critical Care / ECRONICON
EC Emergency Medicine and Critical Care
Thermally induced deformations in multi-layered polymeric struts
Stimulus activated structures that deform from a reference to target configurations are used in various fields such as soft robotics, smart materials, and actuators. In this work we introduce a framework that captures the non-linear response of multi-layer polymeric beams subjected to thermo-mechanical loading. We show that the exploitation of the glass transition temperature can lead to a wide variety of interesting responses. Our findings provide guideline for an efficient design of shape-morphing structures capable of polymorphism.
Check out our paper at IJMS: