Ferroelectric nanotubes have potential application in inkjet printing and drug delivery due to their piezoelectric property and unique geometry. For different applications, different electrical boundary conditions are applied to ferroelectric nanotubes. In the present work, domain structures in ferroelectric nanotubes (FNTs) under different electrical boundary conditions are predicted through a phase field model. Simulation results show that domain structures are highly dependent on the compensation of polarization-induced surface charges.

I joined imechanica almost a year ago and I've been frequently following its interesting discussions, even the most animated ones. I think that a place like this is ideal to foster the exchange of ideas in the scientific community;

Moreover it is fantastic as a simple student like me can interact and easily ask questions to the most important researcher in the field of mechanics.

Spring 2008:   The Materials Division of ASME is pleased to announce the creation of The Sia Nemat-Nasser Early Career Medal in honor of Dr. Sia Nemat- Nasser, Director of the Center of Excellence for Advanced Materials at UC San Diego and Distinguished Professor of Mechanics and Materials. This award is given to recognize research excellence in the areas of experimental, computational, and theoretical mechanics and materials by young investigators who are within 10 years after their Ph.D. degree, with special emphasis placed on under-represented minorities and women.  

Hello everybody,

I am a new comer here and I need some help. I want to simulate the interface debonding process of  bimaterial using the commercial FE software msc.marc, but I want to use my own cohesive law not the one given by the marc. so the user subrotine UCOHESIVE must be used, the problem is I dont know how to program using FORTRAN. I hope some one here can help me, if  you have such a user subrotine, can you kindly sent it to me? that will give me a great hand. Thank you very much. Expect your reply.

A few weeks ago I had mentioned in one of my comments that

Mechanics community,

Please find attached the summer 2008 edition of the ASME Committee on Constitutive Equations Newsletter.  Included in the newletter is an article written by Prof. Ostoja-Starzewski on "Homogenization and Size of Representative Volume Element (RVE)".

Thanks,

Greg Odegard

A postdoctoral researcher position is available at the Solid Mechanics Laboratory at Ecole Polytechnique (Paris).  The aim of this postdoctoral research project is to investigate the mechanical behavior of a newly-developed all-metal sandwich sheet material for automotive and aerospace applications. The ultimate goal is to optimize the characteristic sandwich core structure for formability, crashworthiness and fatigue life. This research makes use of experimental, theoretical and computational mechanics.