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CAN 187: 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
187 x 187, 839 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
1491 187 652 652 0
Column Data Row Data
Average nonzeros per column : 8
Standard deviation : 1.4

indexnonzeros
longest49 10
shortest161 5

Average nonzeros per row : 8
Standard deviation : 1.4

indexnonzeros
longest49 10
shortest161 5

Bandwidths Profile Storage
lower64 upper64
average |i-j|20 std.dev.15
minmaxave.std.dev.
lower bandwidth1 64 29 13
upper bandwidth1 64 29 13

Symmetric skyline storage requirement:5399

Heaviest diagonals
offset from main0 -1 1 -31 31 -32 32 -33 33 -30
nonzeros187 185 185 129 129 128 128 124 124 27
accumulated percent12.5424.9537.3646.0154.6663.2571.8380.1588.4690.27

Top 10 out of 19 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: ]