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CAN 445: 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
445 x 445, 2127 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
3809 445 1682 1682 0
Column Data Row Data
Average nonzeros per column : 8.6
Standard deviation : 1.3

indexnonzeros
longest5 13
shortest187 4

Average nonzeros per row : 8.6
Standard deviation : 1.3

indexnonzeros
longest5 13
shortest187 4

Bandwidths Profile Storage
lower404 upper404
average |i-j|29 std.dev.56
minmaxave.std.dev.
lower bandwidth1 404 51 77
upper bandwidth1 404 51 77

Symmetric skyline storage requirement:22766

Heaviest diagonals
offset from main0 -1 1 -15 15 -16 16 -17 17 -6
nonzeros445 402 402 146 146 144 144 140 140 109
accumulated percent11.6822.2432.7936.6240.4644.2448.0251.6955.3758.23

Top 10 out of 273 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: ]