mechanician

Dispense materiali compositi

Dispense materiali compositi


question

hi....I have one question...it is: what is the minimum weight of a water droplet pending on the roof that it will fall down....my question is this ...shall we use both ΔP and surface tension for the solution??? plz guid me....thanks

 

soheilesm@yahoo.com

 


Bird strike on engine fan blade

Good afternoon all,

I am doing bird strike analysis on engine fan blade,I have used lagrangian simulation for this model,very high plastic strain are coming. please suggest  how to retify it and if any one have example problem of bird strike(.k file) please share it 

Regards,

Nizam


Subra Suresh elected to the National Academy of Sciences

Dr. Subra Suresh, material scientist and the Director of the National Science Foundation, is elected to the US National Academy of Sciences.  He is iMechanica user 190.  Congratulations!


damage to the adhesive

Hi

I work  on the damage to the adhesive.

in a abaqus please ,after viewing the results how to calculate the damage surface of the adhesive (damage rate).

thank you in advance

Mhamdia.R 


zidane611's picture

The ANAND model in ABAQUS.

Hi, all

   I am a newer with ABAQUS. I have to simulate mechanics of a new material with ANAND model.

   I want to know whether a built-in ANAND model was in ABAQUS6.91 right now. And how to use it? I have seen in somewhere that someone said ABAQUS 6.5 had built ANAND model, but I don't find any information about ANAND model in ABAQUS6.91 I am using now.

   I hope you can tell me something about it.

   Thank you very much.

 

zidane 


hello ,everyone ,ask for thermal extended finite element crack growth or thermal extended finite element program code .

hello , i am new for xfem ,i want to simulate crack growth with thermal load using xfem ,have some one know what website has free thermal xfem or thermelastic xfem code ? or can send me to z770428@126.com , material is arbitrary , 2Dor 3D , THANK YOU

 YOUR S

 HONGGANG 


Alejandro Ortiz-Bernardin's picture

Professor Yannis F. Dafalias to Receive the 2012 Nathan M. Newmark Medal from ASCE

The American Society of Civil Engineers has awarded the 2012 Nathan M. Newmark Medal to Yannis F. Dafalias, a professor of Civil and Environmental Engineering at UC Davis. The award honors Dafalias’s research in plasticity of metals and soils, finite elastic-plastic deformations, inherent and evolving anisotropy, and structural optimization.

See complete post


periodic boundary conditions

Dear all,

i have implemented the periodic boundary conditions in x-directon for my simple model. In the screed i see the moement of the body in x direction. I think it is not correct. Should be additional boundary conditions be applied? Whichones?

Best regards

ABAgirl


profilometer's picture

Scanning Valves Efficiently And Precisely Is Often A Nightmare

PROFILOMETER

Traditional ways of valve inspection using a contact profilometer are making way for the more recent non contact valve inspection technologies. Even though many of the specs of surface roughness globally are set as per the findings by a contact profilometer the ease of non-contact inspection systems plus the speedier technique of employing the high tech valve inspection technologies are definitely behind why significantly more professionals are purchasing the newest non-contact profilometer.

Great things about a customized valve inspection set-up


need a johnson-cook plasticity model umat in abaqus

I need a johnson-cook plasticity model umat in abaqus。Any help will be appreciate。thanks


Mary Boyce and Huajian Gao elected to the National Academy of Engineering

National Academy of Engineering Elects

66 Members and 10 Foreign Associates

                   WASHINGTON — The National Academy of Engineering (NAE) has elected 66 new members and 10 foreign associates, announced NAE President Charles M. Vest today. This brings the total U.S. membership to 2,254 and the number of foreign associates to 206.


Jizhou Song's picture

Professor David Barnett to Receive the A.C. Eringen Medal from SES

Professor David Barnett of Stanford University will receive the A.C. Eringen Medal from the Society of Engineering Science (SES). The prize is awarded in recognition of sustained outstanding achievements in Engineering Science. Professor Barnett will receive his award during the 49th Annual Technical Meeting of the Society of Engineering Science to be held at Georgia Institute of Technology from October 9-12, 2012.


Jizhou Song's picture

Professor Markus J. Buehler to Receive the 2012 SES Young Investigator Medal from SES

Professor Markus J. Buehler of MIT will receive the 2012 SES Young Investigator Medal from the Society of Engineering Science (SES).


Ting Zhu's picture

Professor Zhigang Suo to Receive the William Prager Medal from SES

Professor Zhigang Suo of Harvard University will receive the the William Prager Medal from the Society of Engineering Science  (SES). The award is made in recognition of his outstanding research contributions in Solid Mechanics. Professor Suo will receive his award during the 49th Annual Technical Meeting of the Society of Engineering Science to be held at Georgia Institute of Technology from October 9-12, 2012.


Huajian Gao's picture

Professor Kyung-Suk Kim to Receive Engineering Science Medal from SES

Professor Kyung-Suk Kim of Brown University will receive the 2012 Engineering Science Medal from the the Society of Engineering Science (SES). The prize, which consists of a plaque and a check for $2000, is awarded in recognition of a singularly important contribution to Engineering Science.  Professor Kim will receive his award during the 49th Annual Technical Meeting of the Society of Engineering Science to be held at Georgia Institute of Technology from October 9-12, 2012.


Vladimir Vinogradov's picture

2012 BENJAMIN FRANKLIN MEDAL IN MECHANICAL ENGINEERING

2012 BENJAMIN FRANKLIN MEDAL IN MECHANICAL ENGINEERING

Zvi Hashin, Ph.D. 
Tel Aviv University
Tel Aviv, Israel 

Citation: For groundbreaking contributions to the accurate analysis of composite materials, which have enabled practical engineering designs of lightweight composite structures, commonly used today in aerospace, marine, automotive, and civil infrastructure.


Jizhou Song's picture

Professor Huajian Gao is awarded the Rodney Hill Prize 2012

The Rodney Hill Prize for 2012 is awarded to Professor Huajian Gao of Brown University, USA. 

This prize, which consists of a plaque and a check for $25,000 (twenty-five thousand US Dollars), is to be awarded in recognition of outstanding research in the field of solid mechanics. The prize is to be awarded every 4 years, to coincide with the quadrennial International Congress of Theoretical and Applied Mechanics (ICTAM). The first prize was awarded at ICTAM 2008 in Adelaide.


Francis Charles Moon named the 2012 Thomas K. Caughey Dynamics Award Winner

Francis Charles Moon is named the 2012 Thomas K. Caughey Dynamics Award Winner.

The Thomas K. Caughey Dynamics Award was established in 2008 and is conferred in recognition of an individual who has made significant contributions to the field of nonlinear dynamics through practice, research, teaching, and/or outstanding leadership.

The Award, which includes a medal, a plaque, and an honorarium of $1,000, will be presented at the AMD Banquet, tentatively scheduled on Tuesday, 13 November 2012, during the ASME International Mechanical Engineering Congress and Exposition, to be held in Houston, Texas, 9-15 November 2012.


David J. Benson named the 2012 Ted Belytschko Applied Mechanics Award Winner

David J. Benson is named the 2012 Ted Belytschko Applied Mechanics Award Winner.

The Applied Mechanics Award was established in 1988 by the ASME Applied Mechanics Division. The Award was renamed the Ted Belytschko Applied Mechanics Award in 2008. The Award is given to an outstanding individual for significant contributions in the practice of engineering mechanics; contributions may result from innovation, research, design, leadership or education.


2012 Thomas J.R. Hughes Young Investigators Named

Yuri Bazilevs, Xi Chen, and Kenji Takizawa are named 2012 Thomas J.R. Hughes Young Investigators.

The Young Investigator Award was established in 1998 by the ASME Applied Mechanics Division.  The Award was renamed the Thomas J.R. Hughes Young Investigator Award in 2008. The Award recognizes special achievements in Applied Mechanics for researchers under the age of 40.


Speech of Acceptance of the 2011 Timoshenko Medal by Alan Needleman

Alan NeedlemanApplied Mechanics Division Honors & Awards Banquet, 15 November 2011, Hyatt Regency, Centennial Ballroom A&B, Third Level.

Thank you, Ares, for your kind introduction. I am greatly honored to have my name added to the list of Timoshenko Medalists. However, receiving the Timoshenko Medal has a down side. I'll describe the down side through a story told by Jean-Baptiste Leblond. At the circus in Imperial Rome a slave was thrown to the lions. The lion stalked the slave and then attacked. As the lion jumped on him the slave grabbed the lion's mane and whispered in its ear. To the crowd's amazement the lion slinked off into a far corner of the arena and sat down. The Emperor called the slave over and said “If you tell me what magic you worked I'll give you your freedom.” The slave replied “It wasn't magic. I just told the lion if he ate me he'd have a good meal but then he'd have to give an after dinner speech. “

Fortunately for me, many previous Timoshenko after dinner speeches are available on iMechanica. I will follow several of those and talk about my life in mechanics. Before I start on that, I want to mention four mechanicians who have had an enormous influence on my professional life as well as having greatly enriched my personal life: John Hutchinson, Viggo Tvergaard, Jim Rice and Erik van der Giessen. There is not enough time to detail my debt to them.

My life in mechanics began my senior year at the University of Pennsylvania. I took a course in continuum mechanics from Hsuan Yeh who was Dean of the Towne School. The course was so interesting that I decided that was what I wanted to study in graduate school. I went to graduate school at Harvard and was very lucky that a young faculty member named John Hutchinson agreed to be my thesis adviser. My PhD thesis involved the finite strain, finite element analysis of a two dimensional periodic array of circular holes (motivated by the pioneering ductile fracture studies of Frank McClintock and Jim Rice). This initiated me into two emerging developments in solid mechanics: finite element methods and materials mechanics. As John Hutchinson remarked in his Timoshenko Medal address, we did not realize we were participating in a revolution.


John W. Hutchinson is awarded the Ludwig-Prandtl-Ring

Professor John W. Hutchinson, of Harvard University, will receive the 2012 Ludwig-Prandtl-Ring.  The award is the highest honor bestowed by the Deutsche Gesellschaft für Luft- und Raumfahrt, the German Society for Aeronautics and Astronautics.   Ludwig Prandtl was a great pioneer of modern Aerodynamics.  The Ludwig-Prandtl-Ring is awarded annually to the maximum of one individual for outstanding contributions to Aeronautics and Astronautics.   


Hassan Aref died this weekend

With deep sorrow we write to  convey the sad news that Hassan Aref has just passed away.  According to an email from Ishwar Puri, Head of the Department of Engineering Science and Mechanics, of Virginia Tech, Professor Hassan Aref went on an extended weekend visit to his home in Illinois on Thursday night.  He died there on Friday, sitting in his chair.


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