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CEGB2802: Structural engineering matrices (unassembled)
Turbine blade

from set CEGB, from the Harwell-Boeing Collection

[Download] [Visualizations] [Matrix Statistics] [Set Information]


Note: The previously available version of this matrix in Matrix Market format refects an assembly which differs from what the contributor intended and has been withdrawn. Please discard it if you have taken a copy. The Harwell-Boeing file remains, but requires proper interpretation.


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Visualizations

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Structure Plot
structure plot


Matrix Statistics

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Size Type
2802 x 2802, 6342 entries pattern symmetric positive definite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
277362 2694 137334 137334 0
Column Data Row Data
Average nonzeros per column : 99
Standard deviation : 38

indexnonzeros
longest37 153
shortest2587 0

Average nonzeros per row : 99
Standard deviation : 38

indexnonzeros
longest37 153
shortest2587 0

Bandwidths Profile Storage
lower252 upper252
average |i-j|63 std.dev.48
minmaxave.std.dev.
lower bandwidth0 251 1.2e+02 38
upper bandwidth0 251 1.2e+02 38

Symmetric skyline storage requirement:328404

Heaviest diagonals
offset from main0 -1 1 -2 2 -3 3 -4 4 -5
nonzeros2694 2644 2644 2594 2594 2544 2544 2518 2518 2492
accumulated percent 0.97 1.92 2.88 3.81 4.75 5.67 6.58 7.49 8.40 9.30

Top 10 out of 493 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.


Set Information

Set CEGB
Source: A.J. Donovan, CEGB, England.
Discipline:Finite-element calculations in structural engineering
Accession:Summer 1980


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Last change in this page: Wed Sep 22 13:33:30 US/Eastern 2004 [Comments: ]