Dear all,
I have some questions about hydrogel mechanical test. After curing, should i put samples in water (submerge in water) or not? I found there's big difference between same samples with different water content. Also, I can't get the tentile strength similar with literature with same materials. My tensile stress is more than 10 times smaller. I really don't know what did I miss.
I would greatly appreciate any help. Thank you!
Hello,
Would you please tell me the basic difference between potential plastic surface and yield surface with a physical meaning, if possible. I know that if both the surfaces match, then it is associated flow-rule, otherwise it is a non-associative flow rule.
I know that this is a very basic question, but I am facing difficulty in completely understanding it.
Thanks in advance.
-Shivani
Dear friends,
I am a beginner in using Abaqus. Now I am doing a project which calls for a simulation of the phase change probleme (two demensional Stephan problem).
I did a simple simulation with water, more prescisely a water slab of 10 C at the left I impose a temperature -10 C, so I got the results of the profils of temperature in every increment of time.
Professor John Rogers, Swanlund Chair Professor of Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, was recently elected to the National Academy of Sciences. Congratulations to John!
Here is the link to the NAS press release: http://www.nasonline.org/news-and-multimedia/news/april-28-2015-NAS-Election.html
Professor Kenneth M. Liechti of the University of Texas at Austin has been selected to recieve the 2015 Award for Excellence in the Adhesion Society. The Adhesion Society’s Award for Excellence, sponsored by 3M, is the Society’s premier award for outstanding achievements in scientific research relating to adhesion.
Congratulations to Ken!
Professsor Krishnaswamy Ravi-Chandar of the University of Texas at Austin has been selected to receive the 2015 Daniel C. Drucker Medal, one of the ASME society awards for achievement.
The US Association for Computational Mechanics (USACM) is calling for nominations for the Gallagher Young Investigator Medal. The description from the USACM Awards page reads:
Dear all,
Why we have an oscillating behaviour when calculating stress in FEM?
I saw the sentences in the paper:
'Another reason is that stresses are less accurately predicted than strains in FE simulations. Calculated stresses do also show a tendency for an oscillating behaviour, especially in dynamic explicit simulations.'
'stress is less accurate predicated than strain' is easier to understand, but I was wondering the existence of oscillating behaviour for calculating stress.
Any comments are welcome.
