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CAN 256: Structures problems in aircraft design

from set CANNES, from the Harwell-Boeing Collection

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Visualizations

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Structure Plot
structure plot


Matrix Statistics

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Size Type
256 x 256, 1586 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
2916 256 1330 1330 0
Column Data Row Data
Average nonzeros per column : 11
Standard deviation : 7.2

indexnonzeros
longest141 83
shortest66 4

Average nonzeros per row : 11
Standard deviation : 7.2

indexnonzeros
longest141 83
shortest66 4

Bandwidths Profile Storage
lower252 upper252
average |i-j|49 std.dev.48
minmaxave.std.dev.
lower bandwidth1 252 77 52
upper bandwidth1 252 77 52

Symmetric skyline storage requirement:19800

Heaviest diagonals
offset from main0 -1 1 -12 -7 7 12 -11 11 -8
nonzeros256 163 163 24 24 24 24 21 21 20
accumulated percent 8.7814.3719.9620.7821.6022.4323.2523.9724.6925.38

Top 10 out of 375 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.


Set Information

Set CANNES
Source: Lucien Marro, Programmation Scientifique, Aerospatiale Cannes, France.
Discipline:Finite-element structures problems in aircraft design.
Accession:June 3, 1981


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Last change in this page: Wed Sep 22 13:33:29 US/Eastern 2004 [Comments: ]