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My Eprint papers

Submitted by Pi-Gang Luan on
research
 Hi,
These are my Eprint papers. Some have already been published as Journal papers, some have not.
I will discuss some of them here someday.
You can link to  http://arxiv.org/ and search my name Pi-Gang Luan in Physics [arxive: All], and these papers would be shown to you. There is an exception, my YBE paper ([Colored solutions of Yang-Baxter equation from representations of U_{q}gl(2)] ). In that case you should type [Pi-Gang Luan] instead of Pi-Gang Luan to find the paper.

My Chinese blogs and My Photonic Crystal Book

Submitted by Pi-Gang Luan on

Hello,

If you can read Chinese, you can visit my Chinese Blogs as follows.

http://www.blogtw.com/blog.php?user=pgluan

http://tw.myblog.yahoo.com/pgluan2005/

Besides, I and my colleague (Prof. chen) published a Photonic Crystal book: "Photonic Crystals -- From butterfly wings to nanophotonics" in 2005.

Notes on Implicit Update for Bergstrom-Boyce Network B

Submitted by Amit Acharya on
education

This post is in response to the imechanica request

node/5034

 (a separate post, as I have to attach notes - it would be really nice to be able to attach documents to imechanica comments)

 Attached are hand-written notes I have used to implement the Network B for the Bergstrom-Boyce model. They were written for my use only, so if it seems stream-of-consciousness at times, don't blame me. The details should all be there, though.

Bending and 2D Elasticity: Going Back in Time

Submitted by Ajit R. Jadhav on
research
textbooks
solid mechanics
elasticity
bending
couple stresses

The following is a (relatively minor) question which had occurred to me more than two decades ago. By now I have forgotten precisely when it was... It could have been when I was in my TE (third year engineering) at COEP. ... Or, perhaps, it was later on, when I as at IIT Madras (studying stress analysis on my own). ... I don't remember precisely when it occurred to me, only *how* it did---it was when I was poring over the first part of Dieter's book.



Bergstroem Boyce Model - inelastic part

Submitted by Andreas Burger on

Hi, 

 I was wondering if anyone has experience in implementing the Bergstroem-Boyce Model (Constitutive modeling of the time-dependent and cyclic loading of elastimers and application to soft biological tissue, 2001)? I am struggling with the implementation of the viscoplastic part (Network B) of the model:

Results of our academic investigation of the I-35W bridge collapse

Submitted by Roberto Ballarini on
research
I-35W bridge collapse

I attach an essay we wrote for a book that will be published by University of Minnesota Press titled "The city, the river, the bridge." The essay is a transcription of part of a public lecture I gave on infrastructure and on the bridge collapse.

After the bridge collapse there were several posts on Imechanica that included speculation about the cause of the collapse, including fatigue crack growth, lack of redundancy, etc.. Our investigation determined the collapse was a result of an undersized gusset plate that reached its plastic limit load. 

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