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Dean Eastbury's picture

Elsevier launches new Journal of the Mechanical Behavior of Biomedical Materials

I am pleased to announce that Volume 1, Number 1 (January 2008) of the Journal of the Mechanical Behavior of Biomedical Materials is published in both print and online on ScienceDirect. This first issue contains three excellent review articles on bone and dentin, human enamel, and biocompatability of Ti-alloys as well as eight research papers.

Amit Acharya's picture

Musings on continuum thermodynamic formalism and (yet another) damage model

A technique for setting up generalized continuum theories based on a balance law and nonlocal thermodynamics is suggested. The methodology does not require the introduction of gradients of the internal variable in the free energy. Elements of a generalized damage model with porosity as the internal variable are developed as an example.

Amit Acharya's picture

New perspectives in plasticity theory


A field theory of dislocation mechanics and plasticity is illustrated through new results at the nano, meso, and macro scales. Specifically, dislocation nucleation, the occurrence of wave-type response in quasi-static plasticity, and a jump condition at material interfaces and its implications for analysis of deformation localization are discussed.

A fluid flow video

I just remembered another video that I had seen some time ago.  Many of you have probably seen it but here it is for those who have not. (The original page where I found it is

Prof. Pat McMurtry's explanation is:

Professor Liviu Librescu nominated for Presidential Medal of Freedom

Dr. Liviu Librescu (1930-2007)

The governor of Virginia has asked President Bush to award the Presidential Medal of Freedom posthumously to  Professor Liviu Librescu, a Holocaust survivor who died trying to save his students during the mass killings at Virginia Tech.  Read more.

Zhiliang Zhang's picture

The one-million-dollar Kavli Prizes in Nanoscience, Neuroscience and Astrophysics call for nominations

The Kavli Prize – three international awards for outstanding contributions to the fields of nanoscience, neuroscience and astrophysics – will be awarded for the first time in 2008. The Kavli Foundation has established these international awards to recognize seminal advances in scientific research. Each prize will consist of a scroll, a medal and a cash award of USD 1 million.

A strained film grown on a vicinal substrate: Steps bunch or not to bunch?

When a strained film is grown on a vicinal substrate, the steps advance like a train when the deposited atoms have sufficient mobility to reach the step edges. However, as the steps advance, the strain-induced force monopoles associated with the steps cause the steps to attract to each other (J. Tersoff, PRL 74, 4962, (1995)), resulting in a thermodynamic instability of the steps in the form of step bunching (J. Tersoff, et al., PRL 75, 2730 (1995)).

Eigenmodes of a square plate

The following video is a nice depiction of how the eigenmodes of a plate change with increasing forcing frequency.

20th Annual Melosh Competition at Duke University

The 20th Annual Melosh Competition for the Best Student Paper on Finite Element Analysis will be held at Duke University on April 25, 2008.  The competition has become one of the premier graduate student events in the broad area of mechanics.   We have held the competition at a variety of locations over the past several years, and this year we are returning to Durham.   

Banding in FEM

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I know the following: In linear FE analysis with linear constitutive law, say CST, there will not be any discontinuity across the adjacent (or neighboring) elements, for any of the fields---displacements, strains or stresses. But I do have certain questions that are not very well addressed in the introductory FEM texts:

(i) Assuming a displacement-based formulation, under what conditions would you expect discontinuities (or inter-element banding) to possibly appear in: (a) stresses? (b) strains? (c) displacements?

Lecturer/Senior Lecturer (2 continuing positions)

Ad No Ref: A078244

Lecturer/Senior Lecturer (2 continuing positions)

Department of Materials Engineering

Faculty of Engineering

Monash University, Australia

Ph.D. positions

Dear fellows,

crack growth by XFEM (Cyrille Dunant, Ph.D. student, EPFL, IMX) working with us on XFEM development (xfem++) a very generic finite element library
A short note to let you know that I have now three Ph.D. positions available to fill between now and March 2008 (sonner=better) (Students from the EU only -- fully funded). 

Markus J. Buehler's picture

Congratulations to launch of SEAS

I just read Teng Li's entry regarding the launch of SEAS at Harvard.  Thanks for posting this interesting information!  

On this occasion, I'd also like express my congratulations to Harvard
University in launching the School of Engineering and Applied Sciences
(SEAS) last week!  It is terrific that the engineering science community in the Boston area is thriving and developing.  Best of luck, and looking forward to fruitful interactions in the future!  

Markus Buehler of MIT

vh's picture

Presentation Tips

I am attaching a pdf of "How to give successful oral and poster presentations" by J.W. Niemantsverdriet of the Eindhoven University of Technology which I had found on the internet some years ago. It has some very useful tips.

V. Hegadekatte

Mechanics associated with grain-boundary diffusion and sliding in polycrystals and its application to nanocrystals

As stated by Richard Vinci and Oliver Kraft in the announcement of 2008 Gordon Research Conference on Thin Film and Small-Scale Mechanical Behavior, there is a compelling need to understand the critical roles of different deformation mechanisms in structures with small characteristic dimensions, like nanocrystals and thin films. We have recently studied deformation behaviors in nanostructured materials and thin films with deformation mechanisms including grain-boundary diffusion, grain-boundary sliding, and grain-interior plasticity. Some interesting mechanical phenomena associated with heterogeneous grain-boundary properties are found and summarized here.

    Wei Hong's picture

    A theory of coupled diffusion and large deformation in polymeric gels

       A large quantity of small molecules may migrate into a network of long polymers, causing the network to swell, forming an aggregate known as a polymeric gel.  This paper formulates a theory of the coupled mass transport and large deformation.

    Another "straightforward" calculation

    Following Andy's recommendation I have been reading Ellis Dill's Continuum Mechanics[1]. In page 75 of the book, we find the
    well known result that the constitutive equation for an isotropic hypoelastic
    material can be derived from a stored energy function only if

    $\displaystyle \lambda + \mu = 0<br />


    Murthy N. Guddati's picture

    Tenure Track Faculty Position in Advanced Materials at North Carolina State University

    The Department of Civil Engineering at North Carolina State University is inviting applications for a possible tenure-track position in the broad area of advanced materials. The solicitation is part of a broader search, with the goal of filling one or more positions in the department; please see the official advertisement at the end of this message. Note that the advertisement does not give any specific details about the desirable properties of the advanced materials applicant. They are summarized below.


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