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How can I avoid stress concentration at fixed support

Submitted by Echeban on
education
beam bending

I have a cantilever beam, 8 in long, rectangular cross section W=0.75 in, H=1.5 in, E=29 msi, Poisson's=0.3, under uniform line load qy = -50 lbf/in (y direction) entire length, bending around strong axis (zz). Beam theory solution M*c/I gives max. stress = 5687 psi.

I model with ANSYS Workbench, uniform mesh Ex-3-6-3D-Normal-Stress.PNG attached.

If I refine the mesh I only get more and more stress concentration. Expected but how to avoid? I just want to get the same result as M*c/I to show how FEA can predict the same as beam theory. 

An ECCOMAS Advanced Course on Computational Structural Dynamics

Submitted by kolman on
education
computational dynamics; finite element method; numerical methods in mechanics

 

We would like to announce An ECCOMAS Advanced Course on Computational Structural Dynamics, shortcourse2016.it.cas.cz . The short course on computational structural dynamics will be held form July 13 to July 17, 2016 in Prague, Czech Republic.

Are shear-moment diagrams wrong in ANSYS Workbench 16.1 ?

Submitted by Echeban on
education
ansys
ansys workbench

I think I found an ERROR in ANSYS Workbench 16.1 and I hope someone can either CONFIRM or show me what I did wrong. 

This is very important because I am teaching this material, but I do not have support from ANSYS, so I am asking for your help. 

beam_static_structural.jpg : shows a cantilever beam 8 in long under line load -50 lb/in, E=29 msi, cross section 0.75 in wide by 1.5 in tall.

beam_triads.jpg: element triads clearly show cross section coordinates are aligned with global x-y-z coords

5th Summer School on Computational Materials Science Across Scale

Submitted by Theocharis on
education

On behalf of the International Institute for Multifunctional Materials for Energy Conversion (IIMEC) and the Department of Materials Science and Engineering at Texas A&M, we would like to announce the 5th Summer School on Computational Materials Science Across Scales. The 2016 IIMEC Summer School will be held from July 18 to July 29, 2016 on the Texas A&M University campus in College Station, Texas. 

Masters of Thermodynamics

Submitted by Zhigang Suo on
education
thermodynamics

One Internet, multiple worlds.  People have gone mobile, but iMechanica has not.  Although iMechanica is accessible from mobile phones, but it was not designed as such.  On the other hand, mobile social networks are good mostly for short forms.  A practical solution seems to be posting on iMechanica and linking the entries to social networks, such as twitter, wechat, and Facebook.  For example, The New Yorker has a strong presence on Facebook, as my sons and their friends would say.   

PhD positions in Geotechnical Engineering in Canada

Submitted by sujan on
education

Dear all,

Happy new year. My supervisor (http://www.mun.ca/engineering/about/people/bipulhawlader.php) is currently looking for potential PhD students. If you are highly interested and motivated to join our group, please E-mail at sujan95 [at] gmail.com. Do not hesitate to knock me if you have any questions.

Thank you very much.

 

Regards,

Sujan Dutta. 

A disseration style worth emulating ?

Submitted by Biswajit Banerjee on
education
dissertation

http://www.theliberatedmathematician.com/wp-content/uploads/2015/11/PiperThesisPostPrint.pdf

Abstract:

... We do not assume any of those words make any kind of sense, though we do make certain assumptions about how much time the reader has on her hands and what kind of sense of humor she has.

I urge you to read the rest of the dissertation.

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