[Libmesh-devel] Sorry about delayed libmesh-devel postings

2008-07-03 Thread John Peterson
Hi, I just let a couple old emails through the libmesh-devel mailing list server. They are a bit dated at this point so you can probably ignore them. I'm sorry for the lateness of this, but this list gets a good deal of spam and I only go through it once a month or so... -- John -

Re: [Libmesh-devel] Unit Tests / Quadrature Bug

2008-07-03 Thread David Knezevic
> Do any of you have access to "The finite element method" vol. 1 by > Zienkiewicz & Taylor? Pg. 222 is referenced as the source for orders 1-5, > and I want to make sure that the 5th-order rule has only 15 points... > The report by Walkington, "Quadrature on Simplices of Arbitrary Dimension

[Libmesh-devel] Interesting quadrature rules for QUADs

2008-07-03 Thread John Peterson
Hi all, For some reason, they don't teach you this stuff in school, or else, I wasn't paying attention that day :-) I found some even-order non tensor-product rules for quadrilateral elements. These rules contain fewer evaluation points than the equivalent-order tensor product rules. Here is the