research

We have a new paper published, " Stiffness and strength of suture joints in nature, " PHYSICAL REVIEW E

84, 062904 (2011) by Yaning Li, Christine Ortiz, and Mary C. Boyce.
Download the paper from here:

http://web.mit.edu/cortiz/www/publications.html. We welcome any comments to cortiz [at] mit.edu (cortiz[at]mit[dot]edu).

JOURNAL OF APPLIED PHYSICS 111, 013510 (2012)

Dear imechanicians,



I would like to wish
you a Happy New Year 2012 (Blwyddyn Newydd Dda 2012), and hope
that it will bring you what you seek in life.



The best wishes from our
institute (iMAM) in Cardiff are attached.



In the attachment, you will
find information about the next ECCOMAS Conference on the
extended finite element method (XFEM 2013) and details on the
activities of our institute in 2011.



Finally, I would like to let
you know that our institute is co-organising the following

Fore more information, go to http://www.journals.elsevier.com/engineering-failure-analysis/call-for-papers/

Presented by Prof. Thomas J. R. Hughes

Institute for Computational Engineering and Sciences

University of Texas at Austin

April 11, 2012

2:30 a.m. – 4:00 p.m.

Guttenberg Information Technologies Center (GITC) – Room 3710

For more information about this lecture, go to  http://www.journals.elsevier.com/mechanics-research-communications/

We present a geometric theory of nonlinear solids with distributed dislocations. In this theory the material manifold - where the body is stress free - is a Weitzenbock manifold, i.e. a manifold with a flat affine connection with torsion but vanishing non-metricity. Torsion of the material manifold is identified with the dislocation density tensor of nonlinear dislocation mechanics. Using Cartan's moving frames we construct the material manifold for several examples of bodies with distributed dislocations. We also present non-trivial examples of zero-stress dislocation distributions.

ACS Nano, DOI: 10.1021/nn204476h