Matrix BCSSTK33

BCSSTK33: BCS Structural Engineering Matrices (large eigenvalue problems)
Statics module of a pin boss (part of an automobile steering mechanism)

from set BCSSTRUC5, from the Harwell-Boeing Collection

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Stiffness matrix

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Compressed MatrixMarket format file: bcsstk33.mtx.gz (636709 bytes)

Compressed Harwell-Boeing format file: bcsstk33.psa.gz (217602 bytes)

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Visualizations

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Structure Plot

Matrix Statistics

 
    * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
    *                           Matrix Statistics                             *
    *              Generated by Yousef Saad's SPARSKIT Library                *
    * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
    * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
    * TIFFNESS MATRIX FOR PIN BOSS (AUTO STEERING COMPONENT), SOLID ELEMENTS  *
    *                    Key = BCSSTK33 , Type = PSA                          *
    * No values provided - Information on pattern only                        *
    * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        *  Dimension N                                      =       8738  *
        *  Number of nonzero elements                       =     300321  *
        *  Average number of nonzero elements/Column        =    34.3695  *
        *  Standard deviation for above average             =     9.2854  *
        *  Nonzero elements in strict lower part            =     291583  *
        *  Nonzero elements in strict upper part            =     291583  *
        *  Nonzero elements in main diagonal                =       8738  *
        *  Weight of longest column                         =        142  *
        *  Weight of shortest column                        =         19  *
        *  Matching elements in symmetry                    =          0  *
        *  Relative Symmetry Match (symmetry=1)             = NaN         *
        *  Average distance of a(i,j)  from diag.           =  0.259E+03  *
        *  Standard deviation for above average             =  0.200E+03  *
        *-----------------------------------------------------------------*
        *  Lower bandwidth  (max: i-j, a(i,j) .ne. 0)       =          0  *
        *  Upper bandwidth  (max: j-i, a(i,j) .ne. 0)       =        932  *
        *  Maximum Bandwidth                                =        933  *
        *  Average Bandwidth                                =  0.406E+03  *
        *  Number of nonzeros in skyline storage            =    3580133  *
        *  90% of matrix is in the band of width            =        905  *
        *  80% of matrix is in the band of width            =        851  *
        *  The total number of nonvoid diagonals is         =        889  *
        *  The 10 most important diagonals are (offsets)    :             *
        *     0     1     2     3   421     4   422   420   423   419     *
        *  The accumulated percentages they represent are   :             *
        *   2.9   5.6   8.1  10.5  12.3  14.1  15.9  17.6  19.1  20.7     *
        *-----------------------------------------------------------------*
        *  The matrix does not have a block structure                     *
        *-----------------------------------------------------------------*

Set Information

Set BCSSTRUC5
Source:	Boeing Computer Services
Discipline:	Structural engineering
Accession:	Spring 1986

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