BCSSTK32: BCS Structural Engineering Matrices (large eigenvalue problems)
Statics module of an automobile chassis

from set BCSSTRUC5, from the Harwell-Boeing Collection

Stiffness matrix

Download as

Compressed MatrixMarket format file: bcsstk32.mtx.gz (2198744 bytes)
Compressed Harwell-Boeing format file: bcsstk32.psa.gz (747944 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 CHASSIS (MSC NASTRAN) - PATTERN ONLY     *
    *                    Key = BCSSTK32 , Type = PSA                          *
    * No values provided - Information on pattern only                        *
    * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        *  Dimension N                                      =      44609  *
        *  Number of nonzero elements                       =    1029655  *
        *  Average number of nonzero elements/Column        =    23.0818  *
        *  Standard deviation for above average             =    10.4479  *
        *  Nonzero elements in strict lower part            =     985046  *
        *  Nonzero elements in strict upper part            =     985046  *
        *  Nonzero elements in main diagonal                =      44609  *
        *  Weight of longest column                         =        215  *
        *  Weight of shortest column                        =          3  *
        *  Matching elements in symmetry                    =          0  *
        *  Relative Symmetry Match (symmetry=1)             = NaN         *
        *  Average distance of a(i,j)  from diag.           =  0.138E+04  *
        *  Standard deviation for above average             =  0.507E+04  *
        *-----------------------------------------------------------------*
        *  Lower bandwidth  (max: i-j, a(i,j) .ne. 0)       =          0  *
        *  Upper bandwidth  (max: j-i, a(i,j) .ne. 0)       =      43030  *
        *  Maximum Bandwidth                                =      43031  *
        *  Average Bandwidth                                =  0.231E+04  *
        *  Number of nonzeros in skyline storage            =  110572001  *
        *  90% of matrix is in the band of width            =       2709  *
        *  80% of matrix is in the band of width            =        605  *
        *  The total number of nonvoid diagonals is         =      12978  *
        *  The 10 most important diagonals are (offsets)    :             *
        *     0     1     2     3     5     4     6     7     8     9     *
        *  The accumulated percentages they represent are   :             *
        *   4.3   8.1  11.7  15.0  18.3  21.5  24.4  26.9  28.9  30.5     *
        *-----------------------------------------------------------------*
        *  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: ]