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Mike Ciavarella's picture

Google launches HealthMap and PlosMedicine article -- When a mechanics web-based project?

These type of projects are interesting, when a mechanics-based one?

http://www.healthmap.org/en

An example of web-based projects

 

 Summary Points

Valuable information about infectioous
diseases is found in Web-accessible
information sources such as discussion
forums, mailing lists, government Web
sites, and news outlets.

We need a travelling long distance microscope for measurement of crack length

Hi

I am looking for a travelling long distance microscope for measurement of crack length. I will use this microscope on Instron fatigue test machine. I found some long distance microscopes on the web. But they are not appropriate for us. I attached a figure showing the travelling microscope that I would like to buy.

Do you have any suggestion about it? Where can I find it?

Thanks 

ANSYS Simulation

Dear All,

 Is there a source of free material data property files for use in ANSYS Simulation? I am looking for a file representing the properties of Neodymium Iron Boron (38) (permanent magnet material) to apply to a simulation of a motor. 

 Thanks for any help!

shneerow

large deformation in gels.

I have read a slide of Prof. Suo, he mentioned the large deformation in gels. Could you give some applications of this phenomenon in practice?

Zhigang Suo's picture

iMechanica is ranked among top engineering blogs

From time to time people ask if I know other websites like iMechanica but focusing on different branches of engineering.  This morning I saw a recently compiled list of Top Engineering Blogs, and was delighted that iMechanica was ranked close to the top.  I'm aware of the widespread cynicisms among iMechanicians about rankings of all kinds.  But, heck, ranking is good if you are ranked high.  As Freeman Dyson would say, being consistent is a weakness of mind. 

Research on the plasticity/damage coupling model using continuum damage mechanics

Currently, i am now attempting to establish a plasticity/damage coupling model using continuum damage mechanics for complex metal structures such as steel pressure vessel, which can be implemented using finite element analysis. The model can predict the progressive failure and damage evolution as well as the crack initiation and propogation due to large plastic deformation of metal structures. Who can give me some suggestion or idea?

Pooyan Broumand's picture

Smeared crack model in abaqus

Hi ;

I am trying to model a reinforce concrete beam with abaqus  ,I am not familiar with the required parameters needed for the model , I wondered where I can find manuals or detail description of the needed parameteres , and what sort of labartory experiments are needed for this mode (e.g three axial , uniaxial etc.)

Thanks alot

Ken P. Chong's picture

NIST's Technology Innovation Program (TIP) Announces First Competition

ASTRA is delighted to report that the National Institute of Standards and Technology (NIST) is seeking proposals for high-risk research projects to develop innovative technologies for inspecting, monitoring and evaluating critical components of the nation's roadways, bridges, and drinking and wastewater systems. The competition for cost-shared research and development (R&D) support released today is the first to be announced by NIST's newly established Technology Innovation Program (TIP).

Are all 3D-Cracks mix-mode cracks?

I followed this blog with interest for several weeks before I decide to ask my first question. As a newcomer in fracture mechanics, I got confused with a FE-Analysis several days ago, which calcultes the J-Integral of a 3D-crack. Ich transferred the J-Integral calculated using FEM (ADINA) to K (stress intensity factor) and found that the calculated FE-Value is 50% greater than the value acording to the IWM-Methode, which is developed to calculate the K-factors für crack in cylinders.

Uncertainty quantification in mechanics

Modern composite structures have a wide spread in their failure stress.  Advanced multiphysics codes can have a wide range of predicted behavior for nominally the same inputs.  How do we certify the design of such structures or the accuracy of such codes?

Joost Vlassak's picture

Photocatalytic degradation of organic pollutants

POST-DOCTORAL RESEARCH POSITION IN ENVIRONMENTAL ENGINEERING AND MATERIALS SCIENCE

School of Engineering and Applied Sciences, Harvard University

Mike Ciavarella's picture

ADVANCES IN CONTACT MECHANICS : A TRIBUTE TO JJ KALKER DELFT 22/24 OCTOBER

 

http://www.contactmechanics.org/

Delft 22 - 24 October

Chairmen:    

Tom Scarpas     Delft University of Technology, The Netherlands

Patrick Selvadurai     McGill University, Canada

Questions about dislocation souce

As our body, we birth, grow up and dead? Wil the dislocation souce be the same process, if it’s so, what’s the detail process.

(1):the birth of dislocation source

Citation analysis? it is an old story!

I started my research on citation system with a very positve attitude about that. I have read many of scientometrics papers, but now I am completely disappoined! In the report by the International Mathematical Union (IMU) (attached) about citation statistics. I found an interesting sentence! Citation should not be used for evaluation of different papers in two different disciplines. How about different papers from two different sub-disciplines? and even two different  sub-sub-disciplines? and so on!

Zhigang Suo's picture

Memories of IT. Part 1

I finally got around to read Does IT Matter, the 2004 book by Nicholas Carr.  He used the phrase IT (Information Technology) in "its commonly understood sense today, as denoting all the technology, both hardware and software, used to store, process, and transport information in digital form."  He explained, "The meaning of "IT" does not encompass the information that flows through the technology or the talent of the people using the technology."

Sample postdoc research proposals, please !!!

Hi all,

It is very good to see postdoc jobs posted in imechanica .I want to apply for postdoc position in solid mechanics ,however, i have never written a postdoc research proposal.I dont know how it is different from statement of purpose that is required for a graduate research. 

I tried but could not find any sample postdoc research proposal on internet.

I would greatly help if anyone can send me his/her actual or sample postdoc research proposal 

Thanks and Regards,

Sonia Chopra 

On designing dielectric elastomer actuators

Subject to a voltage, a dielectric elastomer can deform substantially, making it a desirable material for actuators. Designing such an actuator, however, has been challenging due to nonlinear equations of state, as well as multiple modes of failure, parameters of design, and measures of performance. This paper explores these issues, using a spring-roll actuator as an example.

Post-Doc Position is avalaible in Bio-Mimetic Adhesive Interfaces


A Post-Doc Position is avalaible in Bio-Mimetic Adhesive Interfaces (EbioAdI) at the University of Mons-Hanaut, Belgium

Supervisor: Prof. Pascal Damman, PhD
University of Mons-Hainaut
Interfaces & Complex Fluids Lab (InFluX)
European Collaborative Research Project (ESF-Eurocores)
Duration : 1 – 3 years
Deadline: 1 September 20088

In short:

Ken P. Chong's picture

STC FY2008 solicitation has cleared

Plans are underway to issue a solicitation for the Science and Technology Centers Program in July 2008. Please visit the STC website for updates: http://www.nsf.gov/od/oia/programs/stc/index.jsp

How to develope a new potential function.

How to develope a new potential function.

For instance, if I want to study a new material system by classical MD, for which the existing potential force fields are not suitable.

I would like to know the standard procedure, how to use the first principle studies/ experimental data and how to select the basic functions...from the experts in this area.

Prasad MVD

How do I run Abaqus 6.7-1 from a DOS Window

Choose a channel featured in the header of iMechanica: 

Hi,

I am tyring to learn Abaqus for my reserach work. I was easily able to work with  Abaqus CAE. However  I am not able to run Abaqus through a DOS window. Also, the tutorials mention commands like 'abaqus fetch' which do not work on the command line when I input them. It always shows an error saying that 'abaqus' is not a internal or external command,operable program or batch file. 

Can somebody help me with this? Is there any particular part of the Manual or help section that I can read to find out how to do this?

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