D. Giannacopoulos et S. Mcfee, Functional derivatives and optimal discretization based refinement criteria for adaptive finite element analysis with scaler tetrahedra, IEEE MAGNET, 35(3), 1999, pp. 1326-1329
Efficient functional derivative formulas suitable for optimal discretizatio
n; based refinement criteria are developed for 3-D adaptive finite element
analysis (FEA) with scalar tetrahedra. Results for generalized scalar Poiss
on and Helmholtz systems are derived directly from first principles, and co
nfirmed numerically through fundamental benchmark evaluations. Practical ad
aption applications are illustrated for selected FEA refinement models.