Matrix CAN 715

CAN 715: Structures problems in aircraft design

from set CANNES, from the Harwell-Boeing Collection

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Compressed MatrixMarket format file: can__715.mtx.gz (7409 bytes)

Compressed Harwell-Boeing format file: can__715.psa.gz (6559 bytes)

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Visualizations

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Structure Plot

Size Type

715 x 715, 3690 entries pattern symmetric indefinite

Nonzeros

total diagonal below diagonal above diagonal A-A'
6665 715 2975 2975 0

Column Data Row Data

Average nonzeros per column : 9.3
Standard deviation : 5.9
index nonzeros
longest 99 105
shortest 101 2
Average nonzeros per row : 9.3
Standard deviation : 5.9
index nonzeros
longest 99 105
shortest 101 2

Bandwidths Profile Storage

lower 612 upper 612
average |i-j| 59 std.dev. 1.1e+02

min max ave. std.dev.
lower bandwidth 1 612 1e+02 1.3e+02
upper bandwidth 1 612 1e+02 1.3e+02
Symmetric skyline storage requirement:73138

Heaviest diagonals

offset from main 0 -1 1 -31 31 -32 32 -33 33 -17
nonzeros 715 605 605 297 297 257 257 214 214 99
accumulated percent 10.73 19.80 28.88 33.34 37.79 41.65 45.51 48.72 51.93 53.41

Top 10 out of 561 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: ]