Flexoelectricity is a universal property of all dielectrics by which they generate a voltage in response to an inhomogeneous deformation. One of the controversial issues in this field concerns the magnitude of flexoelectric coefficients measured experimentally, which greatly exceed theoretical estimates. Furthermore, there is a broad scatter amongst experimental measurements. The truncated pyramid compression method is one of the common setups to quantify flexoelectricity, the interpretation of which relies on simplified analytical equations to estimate strain gradients.

<p>Two PhD positions are available at the Department of Petroleum Engineering, Texas A&amp;M University in the area of characterization and micromechanical modeling of organic-rich shales. Candidates should have a BS or MS degree in civil engineering, mechanical engineering, petroleum engineering, material science or other related areas. Candidates with background in experimental and modeling of porous materials are highly preferred.

Virtual forming of metallic sheet materials: prediction of forming and in-life behaviors within an integrated approach

Sulin Zhang, Pennsylvania State University

Hongyan Yuan, University of Rhode Island

Xiaohan Zhang             Amit Acharya                Noel J. Walkington              Jacobo Bielak

We describe a model based in continuum mechanics that reduces the study of a significant class of problems of discrete dislocation dynamics to questions of the modern theory of continuum plasticity. As applications, we explore the questions of the existence of a Peierls stress in a continuum theory, dislocation annihilation, dislocation dissociation, finite-speed-of-propagation effects of elastic waves vis-a-vis dynamic dislocation fields, supersonic dislocation motion, and short-slip duration in rupture dynamics.

4th International Symposium on Energy Challenges and Mechanics - working on small scales

Hi all,

One of our recent works on nanoscale directional motion induced by stiffness gradient.

I hope you will find it interesting.

http://dx.doi.org/10.1103/PhysRevLett.114.015504

This work has been presented in 2014 MRS Spring Meeting by Prof. Huajian Gao (the PPT file he used is attached): https://mrsspring14.zerista.com/event/member/109225

Best,

Tienchong

At the School of Engineering at the University of Glasgow, there is a position open for a Lecturer/Senior Lecturer in the area of Mechanics and Materials (experimental or computational).

Have a look at:

http://www.jobs.ac.uk/job/AKO520/lecturer-senior-lecturer/

I hope some of you (especially those working on fracture and damage modeling) may find this work interesting:

Modeling damage and fracture within strain-gradient plasticity

http://www.sciencedirect.com/science/article/pii/S0020768315000505#

Recent paper is Part-2 of the paper mentioned below

 http://imechanica.org/node/10104&nbsp;

http://www.sciencedirect.com/science/article/pii/S0749641910001142&nbsp;

Mechanical responses and deformation mechanisms of an AZ31 Mg alloy sheet under dynamic and simple shear deformations