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any idea about boundary conditions to be used when modelling a unit cell of a foam
Dear friends / distinguished imechanicians,
I am trying to use micromechanics in foams to numerically compute the elastic constants using one unit cell. I see some literature available when simple unit cell shapes are assumed (like cubical or hexagonal). However there is nothing specific about modelling for tetrakaidecahedral foams. Assuming the right boundary conditions would be critical for computing the constants. I am not able to come up with a reapeating pattern for determining the places to apply the boundary conditions.
Citation Statistics Report by the IMU
Here is a report on Citation Statistics written by the International Mathematical Union written in cooperation with the ICIAM and IMS.
Given all the discussion on impact factors and h-indicies, I thought many people may find this report interesting.
choice of characteristic length for interfacial crack in Abaqus
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Hi,
investigation on mechanical properties of clay-polymer nanocomposites
Hi all
I have a question and need for guidence.
I' m working on mechanical properties of polymer based nanocomposites as my thesis. I'm a beaginer in open sourse FEM programs.
I want to modele clay, polymer and specialy interactions between them to investigate bending properties and enhancements.
Is it possible for me to use commercial programs like ABAQUS? Which programe do you prefer?
I will appreciated if any one could help me to identify witch method is more suitable for investigation in this field.
Europe’s research system must change: Nature Vol 452|24 April 2008
Dear Imechanica friend
a recent Nature Commentary has generated a lot of interest, particularly in Europe. Maybe it is of interest, also in response to Grand Challenges for Engineering?
I suggest some lines:
The Paris equation
The Paris equation should correctly be referred to as the ERDOGAN-PARIS equation, maybe some more names may be needed.
LEFM is a term bandied about in the text books, but very few texts know how to define what it means and how it applies.
You can take my course. What happened to the earlier posts about my course.
Anyone who contributes to my DORN-RAJNAK or HARPER DORN will be given credit.
Domain structures of ferroelectric nanotubes controlled by surface charge compensation
Ferroelectric nanotubes have potential application in inkjet printing and drug delivery due to their piezoelectric property and unique geometry. For different applications, different electrical boundary conditions are applied to ferroelectric nanotubes. In the present work, domain structures in ferroelectric nanotubes (FNTs) under different electrical boundary conditions are predicted through a phase field model. Simulation results show that domain structures are highly dependent on the compensation of polarization-induced surface charges.
How to execute a python function in abaqus
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Does anyone know how to execute a python function in abaqus?
If I have a python function, I can input the dimension of the structure and the generate a Abaqus model. However, I don't know how to execute this python function in Abaqus.
For python script, it just type
abaqus cae script=myscript.py
But if it is a function, how to call it using Abaqus?
Thanks a lot!!!