education

New article:  Nonlinear programming and closest point return plasticity http://www.parresianz.com/mechanics/plasticity/algorithm/primal-dual-closest-point-return/

This article tries to justify the use of backward Euler stress updates.

-- Biswajit

In Part 5 of my series on return mapping for plane stress plasticity, I claim that the obsession with backward Euler is not justified if accuracy is important.  See http://www.parresianz.com/mechanics/plasticity/algorithm/plane-stress-drucker-prager-return-part-5/.

Let me know if you disagree and why.

-- Biswajit

Parts 3 and 4 of the series on plane stress Drucker-Prager plasticity are now online.  More to come soon.

Check out 

http://www.parresianz.com/mechanics/plasticity/algorithm/plane-stress-drucker-prager-return-part-3/

and

http://www.parresianz.com/mechanics/plasticity/algorithm/plane-stress-drucker-prager-return-part-4/

Dinamica e stabilità

I have implemented a Arc length continuation method for material non-linearity. The program quits with low arc length values while it progresses well for high arc length values. I am attaching a png image for your understating  about the nature of the force deformation curve. Can you please clarify me about the problem and provide me any suggestions on it.

Thanks in advance.

This is a reminder that the deadline to apply for the financial aid for the summer course in Udine is approaching:  March 22. 

Short course at Centre International de Sciences Mechanique (CISM), Udine.

May 22-26, 2017

Lecturers:  S Forest, I Groma, D McDowell, S Mesarovic, J-N Roux, H Zbib

The flyer is attached.  Register at:   http://www.cism.it/courses/C1703/ 

Part 2 of plane stress Drucker-Prager return algorithm: http://www.parresianz.com/mechanics/plasticity/algorithm/plane-stress-d…

-- Biswajit

New blog post:  Plane stress Drucker-Prager plasticity (part 1): http://www.parresianz.com/mechanics/plasticity/algorithm/plane-stress-d…

-- Biswajit

Recently, Politecnico di Milano in Italy has attempted to force all teaching at Master level in English.  This has been stopped by some academics who went to different levels of administrative courts, and recently there was a prononciation of the Supreme Court.  The matter is not settled yet, but you can find an account of this with various links here.