%-------------------------------------------------------------------------------
% UF Sparse Matrix Collection, Tim Davis
% http://www.cise.ufl.edu/research/sparse/matrices/Janna/Flan_1565
% name: Janna/Flan_1565
% [3D model of a steel flange, hexahedral finite elements]
% id: 2544
% date: 2011
% author: C. Janna, M. Ferronato
% ed: T. Davis
% fields: name title A id date author ed kind Zeros notes
% kind: structural problem
%-------------------------------------------------------------------------------
% notes:
% Authors: Carlo Janna and Massimiliano Ferronato                 
%                                                                 
% Symmetric Positive Definite Matrix                              
% # equations:    1564794                                         
% # non-zeroes: 117406044                                         
% Problem description: Structural problem                         
%                                                                 
% The matrix Flan_1565 is obtained from a 3D mechanical problem   
% discretizing a steel flange with hexahedral Finite Elements. Due
% to the regular shape of the mechanical piece, the computational 
% grid is a structured mesh with regularly shaped elements. Three 
% displacement unknowns are associated to each node of the grid.  
% Some further information may be found in the following papers:  
%                                                                 
% 1) C. Janna, A. Comerlati, G. Gambolati. "A comparison of       
% projective and direct solvers for finite elements in            
% elastostatics". Advances in Engineering Software, 40, pp.       
% 675-685, 2009.                                                  
%                                                                 
% 2) C. Janna, M. Ferronato, G. Gambolati. "A Block FSAI-ILU      
% parallel preconditioner for symmetric positive definite linear  
% systems". SIAM Journal on Scientific Computing, 32, pp.         
% 2468-2484, 2010.                                                
%-------------------------------------------------------------------------------
