Hi, Step-44 has a lot going on and really sets you up to tackle a variety of real world problems. There is a significant jump in complexity between this tutorial and steps 8,17 & 18.
I have been reading the references and I am about there but need few clarifications for why things are the way they are. Any assistance would be much appreciated... My first question deals with the statement "The Euler-Lagrange equations corresponding to the residual" Directly above this sentence is the residual, whose derivation I understand. Where I am lost is that s tact on to equations. I have only one residual equation. I cannot bridge that disconnect. My other question has to deal with the solving procedure for K (see snippet below) [image: Ksolve.png] I am completely lost here. What is the significance of p and J not having derivatives on them that makes it "easy" to solve for those terms in isolation? I am also confused how K_pJ, K_Jp and K_JJ form a block diagonal matrix. I could get there if I ignore the top row but then the equations below do not make sense I think. Some detail on this part of the process would be great. Thanks in advance, Matt -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/a090a200-fa7a-44d9-ba59-6c5e6064fd5bn%40googlegroups.com.
