The Matrix Market

Home Search Browse Resources

CAN 838: Structures problems in aircraft design

from set CANNES, from the Harwell-Boeing Collection

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


Download as

Help: My browser can't read the compressed data files. What now?


Visualizations

Click on image to get an enlarged version. Click on label to get an explanation.

Structure Plot
structure plot


Matrix Statistics

Click on label to get an explanation.

Size Type
838 x 838, 5424 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
10010 838 4586 4586 0
Column Data Row Data
Average nonzeros per column : 12
Standard deviation : 6.2

indexnonzeros
longest64 32
shortest128 6

Average nonzeros per row : 12
Standard deviation : 6.2

indexnonzeros
longest64 32
shortest128 6

Bandwidths Profile Storage
lower838 upper838
average |i-j|1.6e+02 std.dev.1.6e+02
minmaxave.std.dev.
lower bandwidth1 838 2.5e+02 1.7e+02
upper bandwidth1 838 2.5e+02 1.7e+02

Symmetric skyline storage requirement:208038

Heaviest diagonals
offset from main0 -1 1 -2 2 -403 403 -404 404 -402
nonzeros838 487 487 162 162 117 117 111 111 108
accumulated percent 8.3713.2418.1019.7221.3422.5123.6824.7925.8926.97

Top 10 out of 699 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


The Matrix Market is a service of the Mathematical and Computational Sciences Division / Information Technology Laboratory / National Institute of Standards and Technology.

[ Home ] [ Search ] [ Browse ] [ Resources ]

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