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A single theory for some quasi-static, supersonic, atomic, and tectonic scale applications of dislocations

Submitted by Xiaohan Zhang on

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.

Nanodurotaxis: a fundamental law of nanoscale directional motion

Submitted by Tienchong Chang on

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

Modeling damage and fracture within strain-gradient plasticity

Submitted by Emilio Martíne… on

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#

Mechanical responses and deformation mechanisms of an AZ31 Mg alloy- Part 2

Submitted by Amit Pandey on

Recent paper is Part-2 of the paper mentioned below

 http://imechanica.org/node/10104 

http://www.sciencedirect.com/science/article/pii/S0749641910001142 

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

 

Ken Liechti will receive the 2015 Adhesion Society Award for Excellence

Submitted by Rui Huang on

Professor Kenneth M. Liechti of the University of Texas at Austin has been selected to recieve the 2015 Award for Excellence in the Adhesion Society. The Adhesion Society’s Award for Excellence, sponsored by 3M, is the Society’s premier award for outstanding achievements in scientific research relating to adhesion.

Congratulations to Ken!

Prof. Kaushik Bhattacharya to receive the Warner T. Koiter Medal

Submitted by Kaushik Dayal on

Kaushik Bhattacharya, Howell N. Tyson, Sr., Professor of Mechanics and Professor of Materials Science as well as Executive Officer for Mechanical and Civil Engineering at the California Institute of Technology, has been selected to receive the American Society of Mechanical Engineers (ASMEWarner T. Koiter Medal.