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2009 Nathan M. Newmark Medal

Submitted by Amit Pandey on

C. S. Desai Is Recipient of the 2009 Nathan M. Newmark Medal

http://www.u.arizona.edu/~csdesai/

Regents’ Professor Chandra Desai has been awarded the 2009 Nathan M.
Newmark Medal by the Structural Engineering and Engineering Mechanics
Institutes of the American Society of Civil Engineers.

http://www.asce.org/pressroom/honors/winners/?w=newmark

 

LOW-CYCLE FATIGUE CRACK PROPAGATION IN ABAQUS USING XFEM

Submitted by Alberto.Garcia… on

 

Hi all,

 I´m traying to simulate a low-cycle fatigue crack growth in Abaqus 6.9 using xfem. My problem is to add the low cycle method to the xfem solution. 

I believe that the only current option for this would be to manually
create the loading curve and to do the analysis by a brute force
method but i may not be correct in this assumption however.

Please could someone explain a brief method.

i appreciate in advance.

 

 

Welcome to new background of micromechanics

Submitted by Valeriy Buryachenko on

Dear Colleagues,

 I am please to let you know about the birth of a new background of micromechanics defining a new field of micromechanics called computational analytical micromechanics (CAM). It offers opportunities for a fundamental jump in multiscale research (see the abstract attached, where avalable electronic publications are indicated and encouraged for reading). However, these opportunities can be realized only in the case of joint efforts of both computational micromechanic's society and the analyticalone. I would be happy if CAM piques your attention.

Residual stress measurement

Submitted by GOPALAERO2000 on

Hi Everyone,

 I would like to measure the residual stress imposed pattern through thickness of the plate by forming process (bending). Is it possible?

 I came to know that residual stress measurement through HOLE DRILLING METHOD offers only on the surface. That too, applicable only when residual stress imposed is uniform through thickness (like shot blasting process). If any one came across the experience of residual stress measurement, please throw some light in this regard.

 Thanks in advance

 M Gopalakrishnan

Post Doctoral Research Associate in the area of high strain rate loading and multiscale modeling at RPI

Submitted by Suvranu De on

There is an immediate opening for a postdoctoral research position in the Advanced Computational Research Laboratory at RPI, Troy NY to work on problems involving high strain rate loading conditions and multiscale modeling. Encouraged to apply are creative, self-motivated candidates with a sound background in computational mechanics. RPI is home to the CCNI, one of the most powerful university-based super-computational research facilities in the world.



Qualifications:

1.    PhD in Computational/Applied Mechanics or related topic.

How to deal with negetive plastic strain increment in FEA in an elasto - plastic problem

Submitted by Suman.Guha on

In case of elasto-plastic problem it is mentioned that unloading of an integration point should be started along the elastic moduli when the solution gives a negetive increment of the plastic strain at the integration point. If anyone could elaborate it a little more, it will be really helpful.

Thanks 

Wendtland (1972) experimental results on natural frequencies of cracked cantilever beams

Submitted by aysha.kalanad on

The effects of edge cracks on the natural frequencies of cracked cantilever beams have been extensively studied by Wendtland (1972). These results are referred to by quite a number of related journal papers; the refernce is:

Wendtland D. A¨ nderung der biegeegenfrequenzen einer idealisierten Schaufel durch Risse. Ph.D. Dissertation, University of Karlsruhe; 1972.

Does anyone know how this can be accessed online, or atleast the complete set of results for eigenfrequency (first three modes of vibration) changes due to edge cracks at different positions and depths?