BCSSTK31: BCS Structural Engineering Matrices (large eigenvalue problems)
Statics module of an automobile component

from set BCSSTRUC5, from the Harwell-Boeing Collection

Stiffness matrix

Download as

Compressed MatrixMarket format file: bcsstk31.mtx.gz (1313052 bytes)
Compressed Harwell-Boeing format file: bcsstk31.psa.gz (621022 bytes)

Visualizations

Click on image to get an enlarged version. Click on label to get an explanation.

Structure Plot

Matrix Statistics

 
    * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
    *                           Matrix Statistics                             *
    *              Generated by Yousef Saad's SPARSKIT Library                *
    * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
    * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
    * TIFFNESS MATRIX FOR AUTOMOBILE COMPONENT (MSC NASTRAN) - PATTERN ONLY   *
    *                    Key = BCSSTK31 , Type = PSA                          *
    * No values provided - Information on pattern only                        *
    * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        *  Dimension N                                      =      35588  *
        *  Number of nonzero elements                       =     608502  *
        *  Average number of nonzero elements/Column        =    17.0985  *
        *  Standard deviation for above average             =     9.2808  *
        *  Nonzero elements in strict lower part            =     572914  *
        *  Nonzero elements in strict upper part            =     572914  *
        *  Nonzero elements in main diagonal                =      35588  *
        *  Weight of longest column                         =        197  *
        *  Weight of shortest column                        =          2  *
        *  Matching elements in symmetry                    =          0  *
        *  Relative Symmetry Match (symmetry=1)             = NaN         *
        *  Average distance of a(i,j)  from diag.           =  0.379E+03  *
        *  Standard deviation for above average             =  0.349E+03  *
        *-----------------------------------------------------------------*
        *  Lower bandwidth  (max: i-j, a(i,j) .ne. 0)       =          0  *
        *  Upper bandwidth  (max: j-i, a(i,j) .ne. 0)       =       1668  *
        *  Maximum Bandwidth                                =       1669  *
        *  Average Bandwidth                                =  0.620E+03  *
        *  Number of nonzeros in skyline storage            =   23198053  *
        *  90% of matrix is in the band of width            =       1731  *
        *  80% of matrix is in the band of width            =       1465  *
        *  The total number of nonvoid diagonals is         =       1550  *
        *  The  9 most important diagonals are (offsets)    :             *
        *     0     1     5     2     4     6     3     7     8           *
        *  The accumulated percentages they represent are   :             *
        *   5.8   9.7  13.0  16.0  18.7  21.1  23.3  25.0  26.2           *
        *-----------------------------------------------------------------*
        *  The matrix does not have a block structure                     *
        *-----------------------------------------------------------------*
 

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Last change in this page: Wed Sep 22 13:33:28 US/Eastern 2004 [Comments: ]