Editing KeyWords in ABAQUS- PSI elements
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Hello,
research
Covariant and contravariant stress tensors: difference between the Cauchy stress and the 2nd Piola-Kirrchoff stress
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I am currently reading a book about "Material Inhomogeneities in Elasticity" written by Gérard Maugin.
He brings up the covariancy and contravariancy of some well-known stress tensors and in particular that of the Cauchy stress tensor. I was not very familiar with the concept of covariance, so i read up on this very specific tensorial notion.
I have been able to demonstrate easily that the deformation gradient F is a mixed tensor (covariant and contravariant).
Working for a journal in collaboration
I have been working in Numerical Simulation for sometime and would like to work with people who are familar with numerical simulation and are working for a certain paper right now or planning to work. I am located in Ethiopia. I am not familiar with the research community, and instructor in one of the university in the country. If you are interested, I am eager to work. As it is one way of helping me to introduce my self to the research community, while working on a certain paper, and further opens a way for addition works.
Thanks
Fatigue Analysis
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Is it possible to carryout the Fatigue Analysis using LS Dyna.
If it is not possible then what will be the best software to carry out the analysis.
Predicting the Young’s modulus of nanowires from first-principles calculations on their surface and bulk materials
Prof. Xiaodong Li and I are collaborating in identifying those physical mechanisms that govern the mechanical properties of nanomaterials. Recently, we have a manuscript accepted by the Journal of Applied Physics and would like to share it with you.
SEEKING SOME HELP WITH LETTERS OF INTEREST FOR POSTDOCS
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Hi guys,
Since I graduated in Germany and I'm looking for a
postdoc position in the States I come across these requested 'letters
of interest' and I really don't quite know how I'm supposed to be exactly composing those.
I'd really appreciate some help. Thanx a LOT!!!
PS I already tried google! ;)
the DEM's solutions for static mechanics seem strange
My own DEM(Discrete Element Method) program's solution for static problem seems strange.
I use my program to calculate the displacement of a cantilever under static pressure:
1. it seems my program shows convergence for static problem as the mesh gets denser. As the mesh grows denser(that means the particle becomes smaller), the displacement(of y direction) of the free tip becomes smaller.
Method to analyze programmable deformation of dielectric elastomer layers
As a complement to the current issue of journal club, I would like to bring your attention to our current work on dielectric elastomers.
Concrete UMAT
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Has anyone created a UMAT user subroutine for concrete, capable of cyclic loading. I am interested in modeling a composite steel frame with concrete slab, and the "Damaged Plasticity" model in ABAQUS has convergence issues with the cyclic analyses. If it is possible to get a copy of your UMAT, I am very interested.
Thanks
GS Prinz
Seeking Summer Internship Opportunity
I am a third year undergraduate student of IIT Kharagpur (www.iitkgp.ernet.in). In the coming summer, we are supposed to do summer training in some industry in, or out of India, whereas if we want to do internship in a university it must be a foreign university (internship in Indian universities is not allowed).