Mixed formulation
Dear All
Does anybody have this paper?.
On some variational principles in the theory of elasticity and the theory of plasticity
HC Hu - Scientia Sinica, 1955
Thank you
Sreekanth
Blog posts
Reading Abaqus .fil file
Dear all,
in order to access the last value of my state variable SDV at specific integration points and specific elements, I need to write the SDVs into .fil file in order to be able to read them inside my UMAT at each time increment.
I use the subroutine DBFILE to read the .fil file; the keyword to access the state variables is "5", but I don't know how I can go to the value which has been already written to the current integration point.
Could anyboby help?
Thanking in anticipation,
hadi
Your Students Are Your Legacy
http://portal.acm.org/citation.cfm?id=1467247.1467259
by Prof. David A. Patterson (Professor of Computer Science at U.C. Berkeley,Fellow and past president of ACM)
Viewpoint from a Berkeley professor after 32 years of mentoring Ph.D. students. Hope you enjoy as I do.
You may also find an earlier discussion thread in iMechanica interesting:
Tenure-track faculty position at University at Buffalo in the area of Multi-scale modeling
The University at Buffalo (SUNY) seeks a tenure-track assistant professor in the broad area of multiscale modeling of the production, assembly, and properties of engineered nanoscale materials, structures, or devices. Appointment at higher rank is possible in exceptional cases. For the details, please check the attachment.
About the Fatigue strength definition for some specific metal-product
Is there anyone familiar with the S-N curve when dealing with Fatigue test?
S is the stress,σ? For a specific load, isn't it some stress distribution in the test coupon? How do somes testbooks or some industrial standards use only one stress as an element to describe the material or some metal products' fatigue strength? I executed the fatigue test for some metal-products by the load-controlled servo-hydraulic tig. I have some (load,life)points on the S-N coordination,e.g.(7.2KN,258910cycles),(6.0KN,10000000cycles) .
Professor Z. U. A. Warsi passes away . . .
Zahir Warsi, Professor Emeritus of Aerospace Engineering at Mississippi State University passed away on December 3, 2008.
Author of Fluid Dynamics: Theoretical and Computational Approach (CRC Press), eminent scholar and scientist, his obituary can be found on the website of the American Academy of Mechanics:
http://www.aamech.org/obituary.html.
Why Griffith's Law of fracture does not hold at the nanoscale
We know from fracture mechanics theories that fracture instability in a perfectly brittle material occurs when energy release rate (G) becomes equal or more than two times the surface energy (γ) of that material. The value of G = 2γ is known as fracture toughness Gc. This is the classical Griffith criteria of brittle fracture. Experimentally, however, we know that plasticity becomes eminent for most materials and this criteria does not work.
Einstein's birthday, the PI day
The day before yesterday, Mar. 14 (3.14), was a great date, because Albert Einstein was born at the same day 130 years ago.
I and my wife enjoyed a very good holiday that day in Taipei. Most interestingly, we found a vivid statue of Einstein made by Ju Ming, stood still in front of the Chen-Ping (eslite) bookstore.
We took several photos around this statue. Here I share one of them with you.
Automatic Element removal
Hi everone,
The new version of ABAQUS/CAE 6.8 seem to have capability of automatic failed element removal. Does any body has any experience about this new feature in ABAQUS.
cheers,
Manoochehr
Assigning two material behavioour to a beam
Hi Everyone,
I am quite new to this blog, and I enjoy of studying your comments. I have a problem in ABAQUS/CAE. I am trying to model a wood beam that has two beahviour in tension and compression. Elasto-Plastic behaviour in tension and in compression Elsto-Brittle behaviour. Is there any way to model this material in ABAQUS. My problem mainly comes back to this case that we can not assign to a beam two materail behaviour simultanously.
Thank you for your reply.
Manoochehr