Lookee here! The 8th US National Conference on Computational Mechanics is about to occur in July!
. . . . . .
Isn’t this exciting? Anybody here going to this important meeting? zgirl? nk? Jive Talkin Choirboy?
Geez, I don’t know. I may have a conflict; I’m going to Ireland this summer. I’d better check….
Mahdey

Lookee how a crack propagation problem can be simulated:
Generalized Finite Difference Method (GFDM), which extends classical concepts of finite difference to irregular sets of points, without any need for finite element mesh. Typically this is accomplished by combining Moving Least Squares (MLS) approximation with a collocation method for a Partial Differential Equation.

Got MINIMOS withdrawal symptoms??
Cannot handle all three: Computational mechanics, Texas, and July. Maybe 2 of 3. Any 2….
Cheers,
/nk

Well, that Jive Talkin Choirboy said he was lookin for a category on Computational Mechanics, so here it is! But where is he??
Jah, that’s good, MINIMOS withdrawal symptoms! LOL
Now if I could only get John to at least make one post here! Maybe if I ask him to help with my MINIMOS withdrawal? But I’m sure his is worse than mine! LOL
C’mon, JTC, make a comment? Any comment?
I gotta go,
— seev 
I believe the stress at the end of the crack
has a square root singularity, no?— jf

Aahhhhhh, you are of course correct, John. (Why didn’t I think of that?) Let us remove the pole in the PDE by properly integrating the colocation method in the complex plane, of course using correctly the MLS approximation, no?
— tfog

the best book on Fracture Mechanics I know is
“Principles of Fracture Mechanics” by this guy Sanford from
U. Maryland. his website seems to be down right now
http://www.wam.umd.edu/~sanford/prinfracmech.html.
The best I know is that there’s a closed form solution for
von Mises stress in an elliptical hole in a homogeneous
medium. If you take the limit of the ellipticity going to
zero, that solution is used to seed the FE calculations in
the neighborhood of the crack.Also, the H Tree thing seems pretty fruitful for Mesh Generation.This guy Sukumar at Davis (one of Hughes’ students
I think) is doing some pretty good workdilbert.engr.ucdavis.edu/~suku/
I think we ought to put a reading list together.
I’ll post some test problem simultions I have on heat transfer
this weekendE

also, I’m thinking of getting this open source thing:
http://www.opencfd.co.uk/openfoam/
it’s a CFD solver that these guys just made open source
E

This dude, Peter Lax, just got the Abel Prize in mathematics. He was sent to Los Alamos at 19 to work on the Bomb.
Interesting article on his efforts in PDE’s: Lax

Well, on a more pleasant note, he’s the author of
the classic Functional Analysis, and he’s responsible
for LaxPhillips Scattering theory, and the Lax Wendtroff
differnce scheme, among others
this ought to get Kate and the Old Guy chuckling at us
for weeks 
That’s because we don’t know what yer talkin about!
hahahahahahahahahahahahahahahahahaaaaBut it is our pleasure to have real scientists, mathematicians, and/or engineers posting comments on serious subjects. Incidentally, I knew a Ben Lax once, but he’s probably croaked by now. He was my boss’s boss at M.I.T. Lincoln Laboratory around the time of the invention of the masers and lasers.
og
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