%-------------------------------------------------------------------------------
% UF Sparse Matrix Collection, Tim Davis
% http://www.cise.ufl.edu/research/sparse/matrices/Cylshell/s3rmt3m3
% name: Cylshell/s3rmt3m3
% [FEM, cylindrical shell, graded tri. mesh w/ 1666 triangles. , R/t=1000]
% id: 1611
% date: 1997
% author: R. Kouhia
% ed: R. Boisvert, R. Pozo, K. Remington, B. Miller, R. Lipman, R. Barrett, J. Dongarra
% fields: name title date author A Zeros notes id ed kind aux
% aux: coord
% kind: structural problem
%-------------------------------------------------------------------------------
% notes:
% %                                                                              
% %FILE  s3rmt3m3.mtx                                                            
% %TITLE Cyl shell R/t=1000 grad trian mesh 1666 stab MITC3 elem with drill rot  
% %KEY   s3rmt3m3                                                                
% %                                                                              
% %                                                                              
% %CONTRIBUTOR Reijo Kouhia (reijo.kouhia@hut.fi)                                
% %                                                                              
% %BEGIN DESCRIPTION                                                             
% % Matrix from a static analysis of a cylindrical shell                         
% % Radius to thickness ratio R/t = 1000                                         
% % Length to radius ratio    R/L = 1                                            
% % One octant discretized with graded triangular mesh (1666 elements)           
% % element:                                                                     
% % facet-type shell element where the bending part is formulated                
% % using the stabilized MITC theory (stabilization paramater 0.4)               
% % the membrane part includes drilling rotations using                          
% % the Hughes-Brezzi formulation with (regularizing parameter = G/1000,         
% % where G is the shear modulus)                                                
% % full 3-point integration                                                     
% % --------------------------------------------------------------------------   
% % Note:                                                                        
% % The sparsity pattern of the matrix is determined from the element            
% % connectivity data assuming that the element matrix is full.                  
% % Since this case the  material model is linear isotropically elastic          
% % there exist some zeros.                                                      
% % Since the removal of those zero elements is trivial                          
% % but the reconstruction of the current sparsity                               
% % pattern is impossible from the sparsified structure without any further      
% % knowledge of the element connectivity, the zeros are retained in this file.  
% % ---------------------------------------------------------------------------  
% %END DESCRIPTION                                                               
% %                                                                              
% %                                                                              
%-------------------------------------------------------------------------------
