Hello everybody,
I am solving a FE problem on a hetereogeneous medium consisting of rigid phase (Young modulus of about 100 000 N/mm2), a softer phase (Young modulus of 20 000 N/mm2) and pore (Young modulus of 1 N/mm2). The reason that I have to mesh the pore is that there are some elements of rigid phase hanging out in the pores. So, if I do not mesh the pore, then my FE matrix is singular.
Just attended a FEMA introduction course put on by my provincial engineering assoc. We all received a copy of Abaqus Student Edition.
When I install the program on my Toshiba Windows Vista laptop the installation completes but when I start the program and try to draw a part instead of getting a blue grid I get a second white drawing sheet overlaying the first.I have tried numerous installs and have all the latest Vista upgrades. My copy of the DVD is good because the program works on my desktop computer.
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Xiao-Yan Gong, PhD
It appears to me that there is more and more research done on discrete approaches to modelling fracture.
Especially for brittle or quasi-brittle materials these methods are undergoing a revival.
I am not sure why this is the case. I am also not in the position to judge if this revival is useful.
I just had recently a look at some of these models and I found these discrete models to be suitable
for description of fracture in heterogeneous materials, where cracks appear at many different positions.
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Dear colleagues,
Experimental nanomechanics is a frequently discussed topic on imechanica, see e.g. the very active monthly topics by Xiaodong Li, Julia Greer and Wei Cai.
Continuing on this, I would like to draw your attention to a paper we recently published:
"In situ observation of dislocation nucleation and escape in a submicrometre aluminium single crystal" by Sang Ho Oh, Marc Legros, Daniel Kiener & Gerhard Dehm (http://www.nature.com/nmat/journal/v8/n2/abs/nmat2370.html).
