SSTMODEL: BCS Structural Engineering Matrices (linear equations)
Elemental connectivity for the stiffness matrix of a 1960's design for a supersonic transport (Boeing 2707)

from set BCSSTRUC6, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: sstmodel.mtx.gz (31607 bytes)
Compressed Harwell-Boeing format file: sstmodel.psa.gz (24985 bytes)

Visualizations

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

Structure Plot

Matrix Statistics

Size	Type
3345 x 3345, 13047 entries	pattern symmetric indefinite
Nonzeros
total diagonal below diagonal above diagonal A-A' 22749 3345 9702 9702 0
Column Data	Row Data
Average nonzeros per column : 6.8 Standard deviation : 4 index nonzeros longest 410 18 shortest 1 1	Average nonzeros per row : 6.8 Standard deviation : 4 index nonzeros longest 410 18 shortest 1 1
Bandwidths	Profile Storage
lower 162 upper 162 average |i-j| 24 std.dev. 29	min max ave. std.dev. lower bandwidth 1 162 33 33 upper bandwidth 1 162 33 33 Symmetric skyline storage requirement:111374
Heaviest diagonals
offset from main 0 -1 1 -2 2 -3 3 -4 4 -5 nonzeros 3345 955 955 786 786 661 661 570 570 420 accumulated percent 14.70 18.90 23.10 26.56 30.01 32.92 35.82 38.33 40.83 42.68 Top 10 out of 303 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.

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Last change in this page: Wed Sep 22 13:33:28 US/Eastern 2004 [Comments: ]