iMechanica

In this paper we formulate the problem of elastodynamic transformation cloaking for Kirchhoff-Love plates and elastic plates with both in-plane and out-of-plane displacements. A cloaking transformation maps the boundary-value problem of an isotropic and homogeneous elastic plate (virtual problem) to that of an anisotropic and inhomogeneous elastic plate with a hole surrounded by a cloak that is to be designed (physical problem). For Kirchhoff-Love plates, the governing equation of the virtual plate is transformed to that of the physical plate up to an unknown scalar field.

I have an opening for a new postdoctoral scholar to join my research group, please see attached. The project is on the field-scale calibration of DEM models. Primary responsibilities include developing and executing large-scale experiments, interpretation and synthesis of results, and collaboration with modelers to perform the calibrations.

Dear iMechanicians,

I hope some of you find of interest our latest Acta Mat. paper. We show that the concept of "beneficial traps" can enlarge by an order of magnitude the range of "safe loading frequencies" at which hydrogen embrittlement is not observed. 

Analysis of the influence of microstructural traps on hydrogen assisted fatigue

Rebeca Fernández-Sousa, Covadonga Betegón, Emilio Martínez-Pañeda

Acta Materialia 199, 253-265 (2020). Link

This is to inform the readers on iMechanica about this Handbook.

Link to the Handbook

NSF 20-121

September 4, 2020

Dear Colleagues:

Dear Fellow Mechanicians,

I would like to draw your attention to multiple (tenure/tenure-track) positions at the Department of Mechanical Engineering at the University of British Columbia (UBC), Vancouver, Canada. In particular, three simultaneous searches in Manufacturing, Robotics, and General Mechanics are currently ongoing. For more details, please visit:

https://www.hr.ubc.ca/careers-postings/faculty.php

Job ID 38029 - General Mechanics

By Yu Zhou and Lihua Jin

Dear colleagues,

a new PhD position has become available at the Mechanics of Materials group, Eindhoven University of Technology, The Netherlands.

Reduced Order Modelling for Digital Twins of Medical Imaging Catheters

Detailed information, as well as function requirements, conditions and applications details, can be found at the following website:

Prof. Xiaoding Wei's group at the Department of Mechanics and Engineering Science at Peking University (Group Website: https://www.nml-pku.com/) has postdoc openings for graduates with Ph.D. degrees in Applied Physics, Chemical Engineering, Materials Science, and Mechanical Engineering:

Journal: International Journal of Fracture

Abstract: A simple nonlocal field theory of peridynamic type is applied to model brittle fracture. The kinetic relation for the crack tip velocity given by Linear Elastic Fracture Mechanics (LEFM) is recovered directly from the nonlocal dynamics, this is seen both theoretically and in simulations. An explicit formula for the change of internal energy inside a neighborhood enclosing the crack tip is found for the nonlocal model and applied to LEFM.

Fully funded PhD and Postdoc positions in the area of meta-materials, computational mechanics and wave propagation available in the Department of Mechanical and Nuclear Engineering at Kansas State University. Research will be in topics related to the mechanics of metamaterials and the mechanics of granular media.  

Usually, roughness destroys adhesion and this is one of the reasons why the "adhesion paradox", i.e. a "sticky Universe", is not real. However, at least with some special type of roughness, there is even the case of adhesion enhancement, as it was shown clearly by Guduru, who considered the contact between a sphere and a wavy axisymmetric single scale roughness, in the limit of short-range adhesion (JKR limit).

Hello,

Seeking Help: Can anyone share a copy of the following articles: P.C. Bregman, M. Kuipers, H.L.J. Teerling, W.A. van der Veen. Strength and stiffness of a flexible high-pressure spiral hose. Acta Mechanica 97, 185-204 (1993) and B.A. van den Horn & M. Kuipers. Strength and stiffness of a reinforced flexible hose. Applied Scientific Research 45: 251-281 (1988) (which I had and somehow lost).

Thanks in advance

Structured Materials & Dynamics Laboratory (http://cmdl.missouri.edu/) at University of Missouri develops innovative solutions for Solid Mechanics and Structured Materials, in particular the new frontiers of structural dynamics, wave propagation, micromechanics, topological and quantum mechanics, smart materials and dynamical behaviours of multi-functional materials, both man-made and formed naturally, and understanding relationship between microstructures and material macroscopic properties.

Dear Colleagues, Peers, Friends, and Savants,

Do you want to give back to your community, broaden your research horizons, understand the other side of funding, or just seek a temporary change of venue to reinvigorate yourself? Then, here is an opportunity at NSF/MoMS to do just that: https://beta.nsf.gov/careers/openings/eng/cmmi/cmmi-2020-1826.

Please, consider, disseminate, and encourage worthy candidates. I'm always available to provide more information. You know how to contact me.

https://doi.org/10.1016/j.ijplas.2020.102850

Abstract

The deadline for proposal submission for the Haythornthwaite Research Initiation Grant Program has been extended to September 7th, 2020, 5pm EST (there will be no further extension beyond this date).

The details of the program, eligibility and proposal submission can be found at:

https://imechanica.org/node/24414

Dear Colleagues,

Please find attached the new 2020 issue of the ASME Applied Mechanics Division Newsletter. Featured highlights include:

The Biofilm Matrix - A Living Engineering Material

Chenxi Zhai, Haoyuan Shi, Tianjiao Li, Liming Zhao, Jingjie Yeo

J2 Lab for Engineering Living Materials, Sibley School of Mechanical and Aerospace Engineering, Cornell University

Introduction

We have an open PhD position in the areas of perception, planning, and control of autonomous systems in DSIM lab. Highly motivated applicants with prior experience in robotics, control and/or machine learning and strong programming skills and mathematical background are encouraged to apply. Applicants should have B.Sc. and M.Sc. degrees in Computer Science, Mechanical Engineering, or a closely related field.

Simultaneous improvements of strength and toughness in topologically interlocked ceramics, Mirkhalaf, Zhou, Barthelat, PNAS, 2018

Novelty/impact/significance:

Develop a topologically interlocked material (TIM) design that is tougher (25-50X) and stronger (1.2X) than the monolithic plates with the same material (increasing impact resistance without sacrificing strength/toughness).

We seek a full-time Ph.D. student to work on the transmission electron microscopy (TEM) of nickel-based superalloys in the Department of Mechanical Engineering at the University of Alabama. The position will start in January 2021 and will be for four years. It will be funded through a new NSF project on surface engineering of the nickel-based superalloys. The goal is to explore and understand the strengthening and precipitate interactions.