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CAN 268: 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
268 x 268, 1675 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
3082 268 1407 1407 0
Column Data Row Data
Average nonzeros per column : 12
Standard deviation : 5.8

indexnonzeros
longest28 37
shortest237 4

Average nonzeros per row : 12
Standard deviation : 5.8

indexnonzeros
longest28 37
shortest237 4

Bandwidths Profile Storage
lower264 upper264
average |i-j|37 std.dev.42
minmaxave.std.dev.
lower bandwidth1 264 69 56
upper bandwidth1 264 69 56

Symmetric skyline storage requirement:18540

Heaviest diagonals
offset from main0 -1 1 -2 2 -3 3 -12 12 -11
nonzeros268 134 134 97 97 93 93 36 36 35
accumulated percent 8.7013.0417.3920.5423.6926.7029.7230.8932.0633.19

Top 10 out of 313 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: ]